Course: Anatomy & Physiology I (BIOL 2301 + BIOL 2101) · Silver Oak University (fictional sample) · Prof. Navarro
Module: Week 15 of 16 · Fall 2026 · in-person, two 75-minute lectures + one weekly lab
Objective covered: Objective 8 — Describe the special senses — vision, hearing and equilibrium, taste, and smell — relating the structure of each sensory organ to its function.

This file holds two pieces: (A) the Module 15 Overview page ("Start Here") and (B) the Welcome Announcement that drips out when the module opens. Dates below assume a Tuesday/Thursday lecture pattern with Week 15 meeting Tue Dec 8 and Thu Dec 10, a lab that same week, and end-of-week work due Sunday Dec 13, 11:59 p.m. Adjust the day-of-week and times to match your section.

(A) Module 15 Overview — Start Here

Welcome to Week 15: How the Body Touches the World

This is your home base for the week. Read it first, then work the checklist below from top to bottom. Everything you need is linked inside the module.

This is the last week of new material before the final — and it's one of the most personal. Last week you saw how the nervous system reaches outward through the peripheral and autonomic nerves. This week we follow those nerves all the way to the body's windows on the world: the eye, the ear, the tongue, and the nose. Each one is a small machine built to catch one kind of stimulus — light, sound, head motion, or chemicals — and convert it into the electrical signals the brain understands. As always, we lead with the spine of this course: structure determines function. Name a part, then ask what it does and how its shape makes that possible.

The week's big question

"How does each sense organ capture its stimulus — light, sound, motion, or chemicals — and convert it into nerve signals the brain can read?"

By Friday you'll trace light through the eye and sound through the ear, tell rods from cones, separate hearing from balance, and explain why food tastes bland when your nose is blocked.

By the end of this week, you can…

Use this as a checklist. If you can do all four out loud, you're ready for the quiz.

• [ ] Identify the parts of the eye and their functions — cornea (refracts), iris/pupil (controls light), lens (focuses — accommodation), retina (photoreceptors), fovea (sharpest vision), optic nerve — and trace the light path (cornea → pupil → lens → retina).
• [ ] Distinguish rods from cones — rods = dim light, no color; cones = bright light, color (concentrated at the fovea) — and explain why you can't see color in the dark.
• [ ] Identify the parts of the ear — outer (pinna, canal), middle (eardrum, ossicles: malleus → incus → stapes), inner (cochlea = hearing; semicircular canals = equilibrium/balance) — and trace the sound path.
• [ ] Explain taste and smell as chemoreceptors — the five basic tastes (sweet, sour, salty, bitter, umami), smell via olfactory receptors, and why flavor is mostly smell.

What's due this week, and when

Work these in order — each one gets you ready for the next.

Heads-up on the AI tools: you'll use a chatbot to draft and explain, and then you judge its work against what we cover in class. Chatbots routinely reverse rods and cones (claiming rods see color), mis-order the ear ossicles, or swap the cochlea and the semicircular canals. Catching the model is the point — in the tutorial, the assignment, and the lab.

Late policy reminder: 10% off per day late. If life happens, reach out before the deadline — I'd much rather hear from you early.

How to succeed this week

• Lead with the idea, not the jargon. Every structure this week is a plain-English job first (the cornea is the clear front window that bends light; the cochlea is the snail-shell that hears). The vocabulary comes after the picture clicks.
• Memorize two tiny hooks. "Cones for Color (and they need a Cone of bright light); rods for the dark." And "Cochlea hears; canals balance."
• Put the parts in motion. Don't just list the eye's parts — follow the light: cornea → pupil → lens → retina. Don't just list the ossicles — follow the vibration: malleus → incus → stapes → cochlea.
• Tie every structure to its stimulus. Light → photoreceptors; sound and motion → hair cells; chemicals → chemoreceptors. Name the stimulus, name the receptor, trace the signal.
• Treat the chatbot as a smart intern, not an oracle. It drafts; you check. The rods/cones flip and the scrambled ossicles are exactly the kinds of confident errors a model makes — and in the clinic, the stakes for catching an error are real.

You don't need anything special for this week — just your own eyes, ears, tongue, and nose, which you'll actually use in the lab. Come to class ready to figure out why your coffee tasted like nothing the last time you had a cold. See you Tuesday.

(B) Welcome Announcement — Module 15

Release setting: post on the module's start day (offset = 0 days), i.e., Tue Dec 8, 2026 — not before. If your platform won't preserve the scheduled date on import, post this as a draft labeled "Release: Tue Dec 8."

Subject: Welcome to Week 15 — why does food taste like cardboard when you're congested? 👀👂

Hi everyone,

Quick warm-up before our last week of new material: think back to the last time you had a stuffy cold and your favorite meal tasted like nothing. Your tongue was working fine — so what went missing? Your sense of smell. Most of what we call "flavor" is actually olfaction riding along with a handful of basic tastes, so block the nose and most of the experience disappears. That little puzzle is our way into the special senses — the eyes, ears, tongue, and nose that connect the nervous system you've been studying all term to the world outside.

This week — The Special Senses — we tackle the big question: How does each sense organ capture its stimulus and convert it into nerve signals the brain can read? By Friday you'll trace light through the eye and sound through the ear, tell rods from cones, separate hearing from balance, and explain that bland-food mystery for real.

Three things not to miss:
1. Lecture Tutorial 15 — work through the eye, the ear, and the chemical senses with one approved chatbot (Gemini, Claude, or ChatGPT) and submit the share link. You'll catch the model when it flips rods and cones. Due Sun Dec 13.
2. Lab 15 ("Test Your Own Senses"), Quiz 15, Discussion 15, and Assignment 15 also close Sun Dec 13 — the lab is hands-on with your own senses (find your blind spot, test taste without smell), so it's genuinely fun. Start early.
3. Open the Start Here page first — it lays out everything in order with due dates.

One promise: this is the week the whole course comes back to you. Every structure we name — cornea, cochlea, taste bud — is a piece of machinery you're carrying right now, shaped exactly for its job. We lead with plain-language ideas, we tie every structure to what it does, and then next week we pull all sixteen weeks together for the final.

Bring your curiosity (and your own two eyes and ears) to class on Tuesday.

See you soon,
Prof. Navarro