Week 8 · Study guide

Midterm Study Guide · Weeks 1–7 (Objectives 1–4)

Human Anatomy & Physiology · BIOL 2301 (lecture) + BIOL 2101 (lab) Fall 2026 · Prof. Navarro Fictional sample

Course: Anatomy & Physiology I (BIOL 2301 + BIOL 2101) · Silver Oak University (fictional sample) · Prof. Navarro
This is a student-facing review page. Read it, work the fresh practice (including the worked pH example), and follow the dated plan. Then run the paired Exam-Prep Tutorial and take the Practice Exam for active recall. (This guide points to those two — it does not repeat them.)

Integrity note for students. Every practice item on this page is a fresh variant — a new scenario and wording — with a vetted answer. None of these are the live midterm questions. Working them builds the skill the midterm tests, the honest way.

What the midterm covers (read this first)


Exam	Midterm — cumulative, Weeks 1–7, Objectives 1–4 as taught
Format	20 items, 100 points. Concept-, scenario-, and quantitative-pocket items: most items hand you a short situation and ask you to classify, identify, compute, or order — plus one quantitative pocket (a pH comparison). Expect a mix of multiple-choice, several matching items (process-order and structure→function), two "select all that apply," and a couple of true/false. AI is not permitted on the midterm.
Coverage (where the points are)	Obj 1 = 4 items (organization, terminology & homeostasis) · Obj 2 = 7 items (chemistry, cells, transport & metabolism — the biggest slice) · Obj 3 = 5 items (tissues & the skin) · Obj 4 = 4 items (bone & the skeletal system). Study Objective 2 hardest, then Objective 3.
Weight	The midterm is 20% of your course grade.
When it opens / where	Opens in the Week 8 module (the review-and-exam week); window opens at module start (Mon Oct 19) and is due 6 days later (Sun Oct 25); one attempt. This guide and the exam-prep tutorial post before the window so you can prepare. There is no weekly quiz, assignment, or lab in Week 8 — the midterm replaces them (Discussion 8, the midterm debrief, still runs).
What to bring	A simple grasp of the one arithmetic move (pH factors of 10) — no calculator gymnastics. Build the one-page concept sheet this guide helps you make (key terms, the misconception-cures, the worked pH example).

How to use this guide. Each objective below has the same four parts: (A) the key ideas in plain language, (B) the definitions / terms / procedures, (C) the predictable mistakes and their cures, and (D) where to review in the module. After all four objectives come fresh worked examples + self-check questions (with answers, including the quantitative pocket), a dated study plan, and how it's graded + test strategy.

Objective 1 — Body Organization, Terminology & Homeostasis (Week 1) · 4 items

(A) Key ideas, plain language

A&P begins with two skills every health professional uses without thinking: describe a location on the body precisely, and understand how the body keeps itself in balance. So we learn the address system (levels of organization; the directional terms, planes, and cavities — all from anatomical position) and the single most important idea in physiology, homeostasis (holding the inside steady through feedback).

(B) Definitions, terms, procedures

Anatomy vs. physiology: anatomy = the structure (what's there and where); physiology = the function (how it works). Structure determines function — the spine of the course.
Levels of organization (small → large): chemical → cellular → tissue → organ → organ system → organism.
Anatomical position: standing erect, facing forward, palms forward. Every directional term assumes this pose (which is why the thumb is lateral).
Directional terms (opposite pairs): superior/inferior (toward head / toward feet), anterior/posterior (front / back), medial/lateral (toward midline / toward the side), proximal/distal (closer to / farther from a limb's attachment — the wrist is distal to the elbow), superficial/deep (toward the surface / away from it).
Planes: sagittal (left/right), frontal/coronal (front/back), transverse (superior/inferior).
Cavities: dorsal (cranial + vertebral) and ventral (thoracic + abdominopelvic), split by the diaphragm (heart and lungs sit in the thoracic cavity).
Homeostasis & feedback: the body holds a variable near a set point. Negative feedback reverses a change (sweating cools you back to 37 °C); positive feedback amplifies a change.

(C) Predictable mistakes → cures

❌ "The thumb is medial." → ✅ From anatomical position (palms forward) the thumb is lateral.
❌ "The sagittal plane divides front from back." → ✅ Sagittal = left/right; the frontal plane divides front/back.
❌ "Negative feedback is harmful / it amplifies the change." → ✅ Negative feedback opposes the change to defend the set point (it's protective); positive feedback amplifies.
❌ Confuses anatomy and physiology. → ✅ Anatomy = the structure; physiology = the function.

(D) Review in the module

Week 1 → Lecture Outline (anatomy vs. physiology, levels of organization, homeostasis & feedback, directional terms/planes/cavities), Slides (Deck 1), Readings, Lecture Tutorial 1, and Lab 1 ("Map the Body").

Objective 2 — The Chemistry of Life, the Cell, Transport & Metabolism (Weeks 2–4) · 7 items — a big slice

(A) Key ideas, plain language

The body runs on chemistry and energy. Atoms join by sharing or transferring electrons; water's polarity gives it life-giving behavior; and pH measures how acidic or basic a fluid is (the quantitative pocket). Cells are wrapped in a selectively permeable membrane, run by organelles you should know by function, and move things across that membrane by passive (no ATP) or active (ATP) transport. And metabolism turns fuel into ATP through respiration, with protein synthesis building the body's machinery. This is the biggest slice (7 items) — know it cold.

(B) Definitions, terms, procedures

Bonds: covalent = atoms share electrons (strong); ionic = one atom transfers an electron, forming charged ions that attract (strong); hydrogen bond = weak attraction between molecules.
Water (from polarity): cohesion (surface tension), high heat capacity (buffers body temperature), universal solvent.
pH (each whole unit = a 10× change in [H⁺]): pH < 7 acidic, = 7 neutral, > 7 basic. Higher pH = fewer H⁺. Blood is tightly regulated at ~7.35–7.45. A buffer (e.g., bicarbonate) resists pH change. (Pre-verified: pH 4 vs pH 7 = 10³ = 1000× more acidic; a 2-unit gap, pH 6 vs pH 8 = 10² = 100×.)
The cell: the plasma membrane is a phospholipid bilayer + proteins — selectively permeable. Organelles (structure→function): nucleus (DNA/control), mitochondrion (ATP via respiration), ribosome (protein synthesis), rough ER (protein processing), smooth ER (lipids, Ca²⁺ storage), Golgi (package/ship), lysosome (digestion).
Transport: passive (no ATP, down the gradient) — diffusion (solute high→low), osmosis (water toward the higher-solute side). Active (needs ATP, against the gradient) — the Na⁺/K⁺ pump (3 Na⁺ out, 2 K⁺ in). Tonicity: hypotonic (water IN → swells), hypertonic (water OUT → shrinks), isotonic (no net change).
Metabolism: ATP = the cell's energy currency. Cellular respiration in order: glycolysis (cytoplasm; glucose → 2 pyruvate) → Krebs/citric-acid cycle (matrix; releases CO₂) → electron transport chain (inner membrane; O₂ = final acceptor; most ATP). Central dogma: DNA → (transcription, in the nucleus) → mRNA → (translation, at the ribosome) → protein; a codon = 3 mRNA bases = 1 amino acid.

(C) Predictable mistakes → cures

❌ "Ionic bonds share electrons." → ✅ Ionic = transfer; covalent = share.
❌ "Higher pH = more acidic." → ✅ Higher pH = fewer H⁺ = less acidic (more basic).
❌ "Osmosis moves the solute." → ✅ Osmosis moves WATER toward the side with more solute.
❌ Reverses hypertonic and hypotonic. → ✅ In hypotonic, water enters (cell swells); in hypertonic, water leaves (cell shrinks).
❌ "The most ATP comes from glycolysis," or "the nucleus makes the ATP." → ✅ The ETC makes the most ATP (O₂ = final acceptor); mitochondria make it, not the nucleus.
❌ Swaps transcription and translation. → ✅ Transcription = DNA → mRNA (nucleus); translation = mRNA → protein (ribosome).

(D) Review in the module

Week 2 → Lecture Outline (atoms & bonds, water, pH/acids/bases/buffers), Slides (Deck 2), Lecture Tutorial 2, Lab 2 (PhET pH Scale). Week 3 → Lecture Outline (membrane, organelles, transport, tonicity), Slides (Deck 3), Lecture Tutorial 3, Lab 3 (osmosis/tonicity). Week 4 → Lecture Outline (ATP, respiration order, central dogma), Slides (Deck 4), Lecture Tutorial 4, Lab 4 (transcribe & translate).

Objective 3 — Tissues & the Integumentary System (Weeks 5–6) · 5 items

(A) Key ideas, plain language

Every organ is sewn from four fabrics — the four primary tissue types — told apart by structure and function. Then the skin (the integument) puts those fabrics to work as the body's largest organ and its first barrier, with a clean structure→function story and a homeostasis tie-in (thermoregulation).

(B) Definitions, terms, procedures

The four primary tissue types:
Epithelial — tightly packed cells that cover/line surfaces; avascular; sits on a basement membrane; functions: protection, absorption, secretion. Classified by layers (simple = one / stratified = many) and shape (squamous/cuboidal/columnar).
Connective — scattered cells in an abundant extracellular matrix (ground substance + fibers); the most diverse type; blood is a connective tissue; also tendon (dense), adipose (fat), cartilage, bone.
Muscle — contracts: skeletal (striated, voluntary, multinucleate), cardiac (striated, involuntary, intercalated discs), smooth (non-striated, involuntary).
Nervous — neurons + neuroglia; communication by electrical signals.
The integument (skin):
Epidermis — keratinized stratified squamous epithelium; avascular; layers deep → superficial: basale → spinosum → granulosum → (lucidum, thick skin only) → corneum. Keratinocytes make keratin (toughness); melanocytes make melanin (UV/pigment).
Dermis — connective tissue; carries blood vessels, nerves, glands, hair follicles.
Hypodermis — adipose; insulation; not technically part of the skin.
Functions: protection, thermoregulation (sweat + dermal blood flow — a homeostasis loop), sensation, vitamin D synthesis.

(C) Predictable mistakes → cures

❌ "Blood is a muscle tissue." → ✅ Blood is a CONNECTIVE tissue (a fluid one).
❌ "Epithelial and connective look the same." → ✅ Epithelial = packed cells, little matrix; connective = scattered cells, lots of matrix.
❌ "Stratified is a single cell layer." → ✅ Simple = one layer; stratified = many.
❌ "The epidermis is full of blood vessels." → ✅ The epidermis is AVASCULAR — fed by diffusion from the dermis.
❌ Mixes up keratin and melanin. → ✅ Keratin = toughness; melanin = pigment/UV protection.

(D) Review in the module

Week 5 → Lecture Outline (the four tissue types, epithelial/connective/muscle/nervous, membranes), Slides (Deck 5), Lecture Tutorial 5, Lab 5 (virtual histology). Week 6 → Lecture Outline (epidermis/dermis/hypodermis, epidermal strata, glands, thermoregulation), Slides (Deck 6), Lecture Tutorial 6, Lab 6 (InnerBody integument).

Objective 4 — Bone Tissue & the Skeletal System (Week 7) · 4 items

(A) Key ideas, plain language

Bone is not a dry, dead scaffold — it's living, blood-rich, constantly rebuilt tissue. Know what bone does, how it's built (whole bone → osteon → the three cells), and how it never stops remodeling (responding to stress and helping bank calcium — the homeostasis theme).

(B) Definitions, terms, procedures

Functions of bone: support, protection, movement (levers), mineral storage (Ca²⁺/phosphate), blood cell formation (hematopoiesis in red marrow), fat storage (yellow marrow).
Gross anatomy of a long bone: diaphysis (shaft) · epiphysis (ends) · epiphyseal (growth) plate · periosteum (outer membrane) · medullary cavity (marrow).
Microscopic: compact (cortical) bone = built from osteons (Haversian systems — concentric lamellae around a central canal with a vessel; osteocytes in lacunae). Spongy (cancellous) bone = an open lattice of trabeculae — no osteons.
The three bone cells: osteoBlast = Builds (lays down matrix) · osteoClast = Chews (resorbs bone, releases Ca²⁺) · osteoCyte = mature cell that maintains.
Remodeling & Ca²⁺: bone is constantly remodeled in response to stress (Wolff's law — weight-bearing exercise builds bone; microgravity/bed rest weakens it). Remodeling helps keep blood calcium in range (PTH raises it via osteoclasts; calcitonin lowers it — named only as a feedback example).

(C) Predictable mistakes → cures

❌ "Osteoblasts break down bone." → ✅ Blast Builds; Clast Chews (the osteoclast releases calcium).
❌ "The diaphysis is the end of the bone." → ✅ Diaphysis = shaft; epiphysis = end.
❌ "Spongy bone is made of osteons." → ✅ Compact = osteons; spongy = trabeculae.
❌ "Bone is inert and never changes in adults." → ✅ Bone is living, dynamic tissue under constant remodeling.

(D) Review in the module

Week 7 → Lecture Outline (bone functions, long-bone anatomy, the osteon, compact vs. spongy, the three cells, remodeling), Slides (Deck 7), Lecture Tutorial 7, Lab 7 (InnerBody skeletal).

Representative practice (all fresh — vetted answers)

None of these are live midterm items. New scenarios, new wording. Each answer is vetted; the one-line why names the idea it tests. Cover the answers, work each one, then check. The quantitative example is worked in full — make it automatic.

Objective 1 practice

Worked example 1 — anatomy/physiology + the address system.
A nursing student looks at an X-ray of a forearm and notes the radius is on the thumb side; a classmate explains how the muscles flex the elbow.
- (a) Which student is doing anatomy and which is doing physiology? (b) Is the wrist proximal or distal to the elbow? (c) Which plane would divide the arm into left and right portions?
Answer. (a) Reading the X-ray's structure = anatomy; explaining how muscles work = physiology. (b) The wrist is distal to the elbow (farther from the trunk). (c) The sagittal plane. Why: anatomy = structure, physiology = function; distal = farther from attachment; sagittal = left/right.

Worked example 2 — homeostasis & feedback.
You step into a cold room; you start to shiver and your skin's blood vessels constrict.
- (a) Is this negative or positive feedback? (b) What is the response doing relative to the change?
Answer. (a) Negative feedback. (b) The response opposes the change — shivering generates heat and constriction conserves it, pushing temperature back toward the set point. Why: negative feedback reverses the change to defend the set point.

Self-check (Obj 1).
1. Order small→large: organ, tissue, cell, organ system, chemical. → chemical → cell → tissue → organ → organ system.
2. The heart and lungs sit in which cavity? → The thoracic cavity.
3. From anatomical position, is the thumb medial or lateral? → Lateral (palms forward).
4. Positive feedback amplifies or reverses a change? → Amplifies.

Objective 2 practice

Worked example 1 — the pH pocket (quantitative, worked in full).
A lab compares gastric fluid at pH 2 and a body fluid at pH 5.
- (a) How many times more H⁺ does the pH-2 fluid have? (b) Which is more acidic, and is a pH-5 fluid acidic or basic?
Answer. (a) Difference = 3 pH units; each unit = 10×, so 10³ = 1000× more H⁺. (b) The pH-2 fluid is more acidic; pH 5 is still acidic (below 7), just less so. Why: each pH unit is a factor of 10; lower pH = more acidic. (Re-derive: 10^(5−2) = 1000.)

Worked example 2 — cell, transport & metabolism.
- (a) A cell at 300 mOsm is placed in 100 mOsm — which way does water move and what happens to the cell? (b) Which respiration stage makes the most ATP, and what is O₂'s role? (c) Transcription happens where?
Answer. (a) The outside is hypotonic, so water moves IN and the cell swells. (b) The electron transport chain makes the most ATP, and O₂ is the final electron acceptor. (c) In the nucleus (DNA → mRNA). Why: water moves toward higher solute; ETC = most ATP; transcription is nuclear.

Self-check (Obj 2).
1. Covalent vs. ionic — which one shares electrons? → Covalent (ionic = transfer).
2. A solution at pH 9 has more or fewer H⁺ than pure water (pH 7)? → Fewer (it's basic).
3. Osmosis moves water or solute? → Water (toward the side with more solute).
4. Which organelle makes most of the cell's ATP? → The mitochondrion (not the nucleus).
5. Order the respiration stages. → Glycolysis (cytoplasm) → Krebs (matrix) → ETC (inner membrane).

Objective 3 practice

Worked example 1 — the four tissues + the skin.
A slide shows tightly packed cells covering a surface; a second sample is mostly fluid with red and white cells floating in it.
- (a) Name each tissue type. (b) Is the epidermis vascular? (c) What are the epidermal layers, deep → superficial?
Answer. (a) Packed cells covering a surface = epithelial; cells floating in fluid = connective (blood is a fluid connective tissue). (b) No — the epidermis is avascular (fed by diffusion from the dermis). (c) Basale → spinosum → granulosum → lucidum (thick skin) → corneum. Why: epithelial covers/lines; blood is connective; epidermis is avascular; layers run deep→superficial.

Worked example 2 — structure → function in the skin.
- (a) Why is the stratum corneum a good barrier? (b) What does melanin do, and what does keratin do? (c) How does the skin help cool you down?
Answer. (a) It's many layers of flat, dead, keratin-filled cells → tough, waterproof barrier. (b) Melanin = UV/pigment protection; keratin = toughness/water resistance. (c) Thermoregulation: sweat evaporates and dermal vessels dilate to release heat. Why: structure→function; keratin vs. melanin; sweating + blood flow = homeostasis.

Self-check (Obj 3).
1. Blood is which tissue type? → Connective (fluid).
2. True/false: stratified epithelium is a single cell layer. → False (simple is one layer; stratified is many).
3. Which epidermal layer is deepest, where new cells form? → The stratum basale.
4. Is the dermis epithelial or connective tissue? → Connective (it carries the vessels and nerves).

Objective 4 practice

Worked example 1 — the bone cells + remodeling.
A patient on long bed rest loses bone mass; their blood calcium also needs topping up.
- (a) Which cell breaks down bone to release calcium? (b) Which cell builds new bone? (c) Why does bed rest (or spaceflight) cost bone?
Answer. (a) The osteoclast (Clast = Chew; releases Ca²⁺). (b) The osteoblast (Blast = Build). (c) Without weight-bearing stress, remodeling favors the osteoclasts and bone is dismantled. Why: blast builds, clast chews; bone adapts to stress (Wolff's law).

Worked example 2 — bone structure.
- (a) The osteon is the unit of which bone — compact or spongy? (b) Name the shaft and the ends of a long bone. (c) Is adult bone living or inert?
Answer. (a) The osteon is the unit of compact bone (spongy = trabeculae). (b) The diaphysis is the shaft; the epiphysis is each end. (c) Living — dynamic, blood-rich, constantly remodeled. Why: compact = osteons; diaphysis vs. epiphysis; bone is living tissue.

Self-check (Obj 4).
1. Osteoblast or osteoclast — which builds? → The osteoblast.
2. True/false: spongy bone is built from osteons. → False (spongy = trabeculae; osteons = compact).
3. Where does blood cell formation (hematopoiesis) happen? → In red bone marrow.
4. True/false: adult bone never changes. → False (it's continually remodeled).

Study plan — a dated countdown (sized to 2 sessions/week)

Built for the Week 8 midterm. Adjust the exact dates to your section's posted exam day; the rhythm is what matters. Do a little across several days rather than one long cram (spacing beats massing — and it lines up with how memory actually works).

When	Do this (≈45–75 min)
~7 days out (Week 7, after class)	Read this guide's Objectives 1 & 2 sections. Work the Obj 1 & 2 practice — including the pH worked example until "each unit = 10×, pH 4 vs 7 = 1000×" is automatic. Build your one-page concept sheet (anatomy vs. physiology, the directional terms, the feedback rule, the bond/pH cures, the organelle list, the respiration order).
~5 days out	Read Objectives 2 & 3 carefully (they are 12 of 20 items). Drill the cell/transport/metabolism moves (osmosis = water; ETC = most ATP; transcription vs. translation) and the four tissue types + the epidermal layer order. Re-derive any pH item you missed.
~3 days out	Work all of the Obj 3 & 4 practice (tissues, the skin, the bone cells, the osteon, remodeling). Then run the paired Exam-Prep Tutorial (`N-exam-prep-tutorial-week-08`) in an approved chatbot (Gemini / Claude / ChatGPT) — it diagnoses your weak spots across the whole midterm and drills them with fresh items.
~2 days out	Take the Practice Exam (the paired `O-practice-exam-week-08`) under timed, closed-note conditions. Score it; list every concept you missed.
~1 day out	Re-teach only the topics you missed on the practice exam (use this guide's mistake-cures and the relevant Lecture Tutorial). Re-do those specific self-checks, especially the pH one. Sleep — memory consolidates overnight.
Exam day	Skim your one-page concept sheet (and the pH rule). Arrive early. Read each item twice and answer the question actually asked. AI is not permitted — bring your understanding.

Two paired tools — use both (don't skip):
- Exam-Prep Tutorial (N-exam-prep-tutorial-week-08) — a copy/paste chatbot tutor that diagnoses, re-teaches, and drills you across all of Objectives 1–4, ending with a readiness summary. Best for active recall and shoring up weak spots.
- Practice Exam (O-practice-exam-week-08) — a full, fresh, mirror-format run. Best for pacing and a final readiness check.

(This guide points to both on purpose — it doesn't duplicate them.)

How the midterm is graded + test-taking strategy

How it's graded.
- 100 points across 20 items, 5 points each, weighted toward application (read a scenario; classify, compute, or order) rather than bare recitation. The matching and "select all that apply" items are scored per correct pairing/selection.
- The midterm is 20% of your course grade. It replaces Week 8's quiz, assignment, and lab (the midterm-debrief Discussion 8 still runs). One attempt; AI not permitted.
- Coverage matches this guide: Obj 1 = 4 · Obj 2 = 7 · Obj 3 = 5 · Obj 4 = 4. Time is dominated by Objective 2 (chemistry/cells/metabolism) and Objective 3 (tissues/skin), so practice those until they're automatic.

Honest test-taking strategies for this material.
1. Translate each scenario into its concept first. Underline cue words — structure / function, share / transfer, passive / active, cytoplasm / matrix / inner membrane, deep / superficial — then match to the term.
2. Always reset to anatomical position for any directional-term item — palms forward makes the thumb lateral.
3. Do the pH move the same way every time. Count the units, raise 10 to that power; lower pH = more acidic; higher pH = fewer H⁺. pH 4 vs 7 = 1000×; a 2-unit gap = 100×.
4. For transport, ask "what moves and does it cost ATP?" Osmosis moves water (toward more solute), passively; active transport spends ATP against the gradient.
5. For respiration, recite the order and location. Glycolysis (cytoplasm) → Krebs (matrix) → ETC (inner membrane, most ATP, O₂ acceptor). Transcription = DNA→mRNA (nucleus); translation = mRNA→protein (ribosome).
6. For tissues, contrast packed vs. matrix. Epithelial = packed cells / little matrix; connective = scattered cells / lots of matrix (blood is connective). Simple = one layer; stratified = many.
7. Walk the epidermal layers deep → superficial (basale → … → corneum) and remember the epidermis is avascular.
8. For bone, lock the hooks: Blast Builds, Clast Chews; osteon = compact; bone is living, remodeling tissue.
9. Do the easy items first, flag the hard ones, and budget time — 20 items means a few minutes each.
10. On "select all that apply," judge each option independently — the false one is usually a famous misconception (the skin "digests food"; the nucleus "makes the ATP").

Canvas placement block

canvas_object   = Page
title           = "Midterm Study Guide — Weeks 1–7 (Objectives 1–4)"
module          = "Week 8 — Midterm Review & Exam"
grading_type    = not_graded
available_from  = 2026-10-17      # posts before the Week 8 exam window opens
published       = true
provenance      = "~ Prof. Navarro's edition · Fall 2026 · built with thecoursemaker.com"

Term-update note: each term's $39 update regenerates fresh practice variants from this same scope — the live midterm is never reproduced here.

The per-term $39 update (fresh assessment variants, re-paced to your next calendar) referenced above is on the roadmap — coming soon. Today's download is yours to keep, but it doesn't refresh itself.

~ Prof. Navarro's edition · Fall 2026 · built with thecoursemaker.com