Question 1

Which structure in the eye is responsible for regulating the amount of light that enters by adjusting the size of the pupil?

Accepted Answer

Iris

Question 2

What is the primary function of rods in the retina?

Accepted Answer

Detecting dim light and peripheral vision

Question 3

The overlap in our visual fields is essential for which of the following abilities?

Accepted Answer

Depth perception

Question 4

How can humans distinguish thousands of different smells?

Accepted Answer

Odorants stimulate combinations of different olfactory receptors

Question 5

A patient presents with vertigo, hearing loss, and a feeling of fullness in the ear. Which condition is most likely?

Accepted Answer

Labyrinthitis

Question 6

Dancers use a technique called 'spotting' to prevent dizziness. This technique primarily helps the brain by:

Accepted Answer

Focusing on a fixed visual point to stabilize the vestibular system

Question 7

Where are the receptors for hearing located?

Accepted Answer

Cochlea

Question 8

Which of the following best describes the effect of the sympathetic nervous system on the eyes?

Accepted Answer

Dilation of the pupils

Question 9

What is the 'blind spot' of the eye?

Accepted Answer

The area where the optic nerve exits and no photoreceptors are present

Question 10

Which special sense is NOT fully developed at birth?

Accepted Answer

Vision

Question 11

Which hormone is produced by the pancreas and lowers blood glucose levels?

Accepted Answer

Insulin

Question 12

A patient with excessive thirst, frequent urination, and high blood glucose is most likely suffering from:

Accepted Answer

Diabetes mellitus

Question 13

Which gland is labeled 'C' in the fourth image (Figure 16.1)?

Accepted Answer

Adrenal gland

Question 14

Which hormone, produced by the pineal gland, regulates sleep-wake cycles?

Accepted Answer

Melatonin

Question 15

Which of the following is a sign of polycythemia?

Accepted Answer

Increased red blood cell count

Question 16

A patient with bulging eyes, rapid heartbeat, and weight loss is most likely suffering from:

Accepted Answer

Graves’ disease

Question 17

Which structure is labeled 'A' in the third image (Figure 15.24)?

Accepted Answer

Pinna

Question 18

Which hormone stimulates the adrenal cortex to release corticosteroids?

Accepted Answer

ACTH (Adrenocorticotropic hormone)

Question 19

Which of the following best describes the process of dark adaptation?

Accepted Answer

The eyes become more sensitive to light after moving from a bright to a dark environment

Question 20

Which hormone is responsible for stimulating milk production in the mammary glands, as shown in the fifth image (Figure 16.2, labeled 'B')?

Accepted Answer

Prolactin

BIO 2121 Exam 6 Review – Anatomy & Physiology Study Guidance

Study Guide - Practice Questions