Week 5 A&P Lab & Inquiry: Read the Slide

Part 1 — The Big Picture

This week you learned that every organ is built from four tissue types, that an epithelium is named layers first and shape second, that connective tissue is cells scattered in a matrix, and that the three muscle tissues are told apart by striations, nuclei, and intercalated discs. In this lab you do what a histology lab does: you open real scanned slides on a free virtual microscope, read each one by the feature you can see, and name it in the order type, subtype, location, function. You write a hypothesis before you start, define what you will record so it can be checked, and finish by checking a chatbot's account of your slides and catching its slips.

Time budget: Plan for about 120 minutes.

Part 2 — The Task

Guiding question: Can you name any tissue on a scanned slide from the feature you see, and say why it is built the way it is?

Before you begin — hypothesis: Before you open the first slide, write one hypothesis in the if… then… because… form about telling two families apart: if a slide shows cells packed edge to edge with little between them, then you will name it a particular family, because of a reason about how that family is built that you can state. Then define your variable so it can be measured: name the one feature you will record for every slide, such as how far apart the cells sit.

Workshop data: Your own reads of five slides from the free virtual microscope slide box, one per chapter

Source: The observations you record yourself from one slide in each of five chapters of the free virtual microscope slide box; if the slide box will not load, the printed fallback descriptions, written for this lab as illustrative descriptions and not taken from any particular slide, stand in for yours.

• Rows: 5 slides, one from each of the Epithelium, Connective Tissue, Muscle, Nervous Tissue, and Peripheral Blood chapters, shown as 5 rows of the identification table; the inquiry-parts table has 4 rows, and the layers-and-shape table has 5 rows for your one epithelium slide
• Columns: chapter, slide title as shown, the feature you see, type and subtype, one location, and the function the structure serves
• Tool: a free virtual microscope slide box, opened and zoomed on screen rather than focused with a knob

Part 3 — Materials & Procedure

Tools and materials

• A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet)

Ways of working

• structure-identification-on-a-virtual-atlas
• histology-on-a-virtual-microscope
• at-home-physiology-measurement-and-data-table

Procedure

1. Open the free virtual microscope slide box at https://histologyguide.com/slidebox/slidebox.html in a web browser; no account is needed. Find the list of chapters and the five you will use: Epithelium, Connective Tissue, Muscle, Nervous Tissue, and Peripheral Blood. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: The slide box is open and shows its chapters, each with its own list of slides.
2. Open the Epithelium chapter and choose one slide from its list. Zoom in on screen until you can see single cells, then record in the identification table the slide's title as shown, the feature you see (how many layers of cells, the shape of the cells at the free surface, and how close together the cells sit), and the location the slide's title names. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: You can count the cell layers and describe the surface cells' shape, and the identification table has its first row filled.
3. Open the Connective Tissue chapter and choose one slide. Zoom in and record how far apart the cells sit, whether fibers fill the space between them, and which way the fibers run, plus the location the title names. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: Your row describes cells spaced apart in a matrix, the opposite of the packed epithelium you recorded in step 2.
4. Open the Muscle chapter and choose one slide. Zoom in and record whether you see stripes across the cells, how many nuclei each cell has and where they sit, and whether the cells branch and meet at junctions. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: Your row names the striations, nuclei, and branching you see, enough to say which of the three muscle tissues it is.
5. Open the Nervous Tissue chapter and choose one slide, then open the Peripheral Blood chapter and choose one slide. For the nervous slide, record the large cells and the smaller cells around them; for the blood slide, record how the cells sit in the space around them. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: The identification table has five rows, one per chapter, each with a feature you saw for yourself.
6. Fill the last three columns of the identification table: name each slide in the order type, subtype, location, function. Then complete the layers-and-shape table for your epithelium slide, writing the layer word first and the shape word second. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: Every row ends in a four-part name, and your epithelium has a two-word name built from what you counted and saw.
7. Open a blank spreadsheet. In column A type the five chapter names, and in column B type the tissue family you named for each. In an empty cell type =1+1+1+1+1 to count your slides, then count by hand how many different families appear in column B. Tool: A free virtual anatomy atlas or 3D anatomy viewer (Innerbody, GetBodySmart), a virtual microscope for histology (Histology Guide), free physiology simulations (PhET pH Scale, Membrane Channels, Neuron, Gene Expression Essentials), and a spreadsheet (Google Sheets or any free spreadsheet). Check: The spreadsheet cell returns the number of slides you opened, and your hand count of different families is ready for analysis question 1.

Fallback route

When to use it: Use this route if the slide box will not load on your device, or if you cannot use a computer for the slide part of the lab.

Use the five illustrative fallback descriptions below, written for this lab and not taken from any particular slide, in place of your own reads. Complete the identification table from them, build the two-word name for the epithelium description, answer every analysis question, complete the critique step, and submit the same items for equal credit. Fill the type, location, and function columns yourself.

This route earns the same credit as the primary route.

Five illustrative fallback descriptions, written for this lab, that stand in for your own slide reads.

Fallback model data

Chapter	Feature described	Type and subtype	One location	Function the structure serves
Epithelium	One layer of tall, column-shaped cells packed edge to edge, resting on a thin basement membrane and lining a passage of the digestive tract
Connective Tissue	A few cells spaced far apart, with thick fibers between them all running in one direction
Muscle	Spindle-shaped cells, each with one nucleus and no stripes, in the wall of a hollow organ
Nervous Tissue	A few large cells with long branches, surrounded by many smaller cells
Peripheral Blood	Separate cells floating apart, with a wide pale space of fluid between them

Part 4 — The Scaffold

Name the parts of your inquiry before you start, so every slide is read the same way and the feature can be checked.

Student scaffold table 1

Part of the inquiry	Your answer
Hypothesis (if… then… because…)
The feature you record for every slide
What counts as packed and what counts as scattered
One thing you keep the same for every slide

Read each slide by what you can see, then name it in the course's fixed order, so the name rests on evidence.

Student scaffold table 2

Chapter	Slide title as shown	Feature you see	Type and subtype	One location	Function the structure serves
Epithelium
Connective Tissue
Muscle
Nervous Tissue
Peripheral Blood

Build your epithelium's two-word name one move at a time, so the layer word and the shape word come from what you counted and saw.

Student scaffold table 3

Step	What you saw or decided
Number of cell layers you counted
Layer word (simple or stratified)
Shape of the cells at the free surface
Shape word (squamous, cuboidal, or columnar)
Full two-word name, layers first

Part 5 — Analysis Questions

1. Count your slides with 1 + 1 + 1 + 1 + 1 and write the total. Then count how many different tissue families appear in your identification table, and explain why that count is smaller than the number of slides.
2. Compare your Epithelium slide with your Connective Tissue slide. Describe the difference in how close together the cells sit and what fills the space between them, using the words packed, scattered, and matrix.
3. Explain why the slide from the Peripheral Blood chapter belongs to the connective family and not to muscle, using what you saw about how its cells sit and naming its liquid matrix.
4. Use your two-word epithelium name to predict a job: say whether its build suits a short diffusion path or a surface that loses cells to wear, and connect that to simple squamous epithelium in the alveoli or stratified squamous epithelium in the epidermis.
5. Answer one option. (a) The slide box shows a few slides chosen by its makers: name one way your five slides might not show everything about their tissue types, and say why the features you recorded still let you name them. (b) On screen you zoom rather than focus a microscope: name one thing a screen view cannot show you about a tissue, and say how the feature you recorded still settles the name.

Part 6 — AI-Critique Moment

Choose one equal-credit critique route. Route A: ask an approved AI tool to critique your completed work, then check its response against your own evidence. Route B is the no-AI equivalent printed below.

Approved tools: Claude, Gemini, ChatGPT, Grok, Microsoft Copilot.

Prompt to paste:

I've pasted my completed Read the Slide tables above. Please do seven things. First, name the tissue family for each of my five slides, including the slide from the Peripheral Blood chapter. Second, give the two-word name for an epithelium of many stacked layers with flat cells at the surface, and say whether that epithelium has blood vessels inside it. Third, say which of simple squamous and stratified squamous epithelium is built for a short diffusion path and which is built to lose cells to wear. Fourth, tell me how to tell cardiac muscle from skeletal muscle on a slide. Fifth, count how many different tissue types my five slides cover. Sixth, put these four parts of a tissue name in the order this course reads them: function, type, location, subtype. Seventh, tell me what percentage of an adult's body mass is epithelial tissue, with a source.

Test the response for these likely failures:

• Chatbots sometimes file the Peripheral Blood slide under muscle, because the heart pumps blood, or call blood only a fluid rather than a tissue.
• Chatbots sometimes give stratified squamous epithelium the job of a short diffusion path and give simple squamous the job of resisting wear.
• Chatbots often count one tissue type per slide and report that five slides cover five tissue types.
• Chatbots sometimes order a tissue name as type, location, subtype, function, or lead with the function.
• Chatbots often call a stacked epithelium simple, call epithelium vascular, or separate cardiac from skeletal muscle by striations, which both have.
• Chatbots readily supply an exact percentage of body mass that is epithelial tissue, with a confident-sounding citation this lab never gave.

In 3–4 sentences, name what the chatbot got right, quote at least two of its errors, and correct each one with evidence from your tables or the chapter.

Equivalent route (no AI required)

No AI account is required for this lab. Instead of the chatbot, critique this flawed analysis, printed here in full: "My five slides covered five tissue types, one per slide. The Peripheral Blood slide is a muscle tissue, because the heart pumps blood. My epithelium slide had many stacked layers with flat cells on top, so it is simple squamous, and its tiny blood vessels feed every cell directly. Stratified squamous epithelium lines the alveoli, because many layers make the shortest path for gases. My muscle slide had stripes, so it must be cardiac. I name each tissue as function, type, location, subtype. Epithelium makes up exactly 13 percent of an adult's body mass, according to recent studies." Mark it up: quote each flawed sentence, name what is wrong (a mislabeled structure, a wrong structure-to-function pairing, a miscounted value, an order scrambled, a confused tissue type, or an invented figure), cite the evidence from your tables or this week's chapter, and write a corrected sentence beneath it. This route assesses the same objectives (Objective 3 and Objective 2) as the chatbot critique, takes comparable effort (about 30 minutes and 200–300 words), is scored by the same scoring criteria for the same credit, and its own submission artifact is the marked-up flawed analysis, posted in place of the chatbot share link and report.

Part 7 — What to Submit

• All three completed scaffold tables, with the identification table filled from your own slide reads or the illustrative fallback descriptions
• Written answers to all five analysis questions, including the option you chose for question 5
• The chatbot critique report with its share link, or the equivalent route's marked-up flawed analysis

Deliverable:

A short A&P Lab & Inquiry report on reading slides: three completed tables (the parts of your inquiry, the five-slide identification table, and the layers-and-shape table for one epithelium), written answers to five analysis questions, and a critique of a chatbot's account of your slides, or, on the equivalent route, a marked-up correction of the printed flawed analysis. Submit in any accessible file type or as a link; a recorded response may be submitted as audio or video with a transcript, or as text. Choose a written, recorded, or visual form for your answers; every form is graded by the same scoring criteria.

Rubric

The rubric below shows how each submitted part is evaluated; bands are full, partial, or none.

Workshop evaluation criteria

Criterion	Full	Partial	None
Testable hypothesis and a defined feature	A falsifiable if… then… because… hypothesis appears before the first slide, the feature recorded for every slide is named so it can be checked, and one thing kept the same is named.	A hypothesis appears but is not falsifiable, or the recorded feature is vague.	No hypothesis, and the parts of the inquiry are not named.
Identification table	All five slides carry a feature seen on the slide or fallback description and a name in the order type, subtype, location, function, with the blood slide filed as connective and the muscle slide named by its striations, nuclei, or discs.	Most rows are complete, but a family is misfiled, a feature is missing, or the order of the name is broken.	The identification table is blank, or the names are not based on any recorded feature.
Two-word epithelium name	The layers-and-shape table counts the layers, gives the layer word first and the shape word second, and ends in a two-word name consistent with the recorded feature.	A two-word name appears but the layer word and shape word are swapped, or one move is missing.	The layers-and-shape table is blank or gives no two-word name.
Analysis and the build-to-job reasoning	Answers all five questions with evidence from the tables: the slide and family counts, the packed-versus-scattered comparison, blood placed in the connective family with its plasma, a job predicted from the epithelium's build, and one chosen limitation option.	Answers most questions but leaves one unsupported, or states a rule without applying it to the slides.	Analysis questions are unanswered or unsupported by the tables.
Critique of the chatbot or of the printed flawed analysis	On either route, at least two errors are quoted and corrected with evidence from the student's own tables or the chapter, and one correct point is acknowledged; both routes earn this band equally.	On either route, errors are named but corrected without evidence, or only one error is caught.	No critique appears, or pasted output is submitted without any checking.

Quality Gate

• Every row of the identification table records a feature seen on the slide or in the fallback description before it gives a name.
• Every name follows the order type, subtype, location, function, and the epithelium's name puts the layer word first and the shape word second.
• The hypothesis was written before the first slide and has the if… then… because… form, and the recorded feature is defined so it can be checked.
• The slide reads come from your own slides or the printed fallback descriptions, never from memory or a chatbot.
• No measurement, percentage, slide count, study, or source is invented anywhere in the submission.
• The critique quotes the chatbot or the flawed analysis and corrects at least two errors with evidence from your tables or the chapter.