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Portage Learning Anatomy & Physiology
2: Lab 2 Exam Senses Questions and
Answers | Latest Version | 2025/2026 | Correct & Verified
Which part of the eye controls the amount of light entering?✔✔ The iris
What structure focuses light onto the retina?✔✔ The lens
Which receptor type detects pressure and touch?✔✔ Mechanoreceptors
Where are taste buds located?✔✔ On the tongue, inside the papillae
Which cranial nerve is responsible for smell?✔✔ The olfactory nerve (CN I) 1 / 3
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What is the transparent layer at the front of the eye called?✔✔ The cornea
What type of receptor is activated by changes in temperature?✔✔ Thermoreceptors
What part of the ear detects rotational movement?✔✔ Semicircular canals
What fluid is found in the anterior chamber of the eye?✔✔ Aqueous humor
Where are cones most densely located in the retina?✔✔ The fovea centralis
What is the main function of rods in the eye?✔✔ To detect light in dim conditions 2 / 3
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What is the function of the pupil?✔✔ To allow light to enter the eye
Which part of the ear converts vibrations into neural signals?✔✔ The cochlea
What is the name of the area where the optic nerve exits the eye?✔✔ The optic disc
Why is the optic disc called the blind spot?✔✔ It contains no photoreceptors
What structure changes shape to allow focusing on near or far objects?✔✔ The lens
What is the gel-like substance inside the eyeball called?✔✔ Vitreous humor
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