VIBS 243 FINAL EXAM ACTUAL 2026 QUESTIONS AND 100% CORRECT ANSWERS

VIBS 243 Final Exam Content
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1. Which of the following structure(s) in the eye is/are D) A and B
labeled correctly below?
A) Iris
B) Lens
C) Cornea
D) A and B
E) A, B, and C




2. Which of the following part(s) of the cornea is/are D) A and B
labeled correctly below?
A) Corneal epithelium
B) Corneal stroma/substantia propria
C) Bowman's membrane
D) A and B
E) A, B, and C



3. Which of the following is true about the cornea? B) It's avascular
A) It's lined by keratinized stratified squamous epithe-
lium
B) It's avascular
C) The stroma contains loose connective tissue
D) It functions in photoreception

4. Which of the following structure(s) in the eye is/are E) A, B, and C
NOT labeled correctly below?
A) Sclera


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B) Iris
C) Posterior chamber
D) A and B
E) A, B, and C




5. Which of the following part(s) of the lens is/are labeled E) A, B, and C
correctly in the image below?
A) Capsule
B) Simple cuboidal epithelium
C) Lens fibrous region
D) A and B
E) A, B, and C




6. What part of the eye is pictured below? C) Retina
A) Sclera
B) Iris
C) Retina
D) Ciliary body






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7. Which of the following is NOT a function of retinal D) Nutrients to the cornea
pigment epithelium?
A) Vitamin A storage
B) Blood retinal barrier
C) Absorption of light
D) Nutrients to the cornea

8. What is FALSE about the picture below? B) It's used for central vi-
A) It's the site where the optic nerve enters the eye sion
B) It's used for central vision
C) It's a blind spot
D) All of them are true




9. Which of the following is true about the iris? A) Regulates the amount
A) Regulates the amount of light that reaches the of light that reaches the
retina retina
B) Focuses the light that reaches the retina
C) It contains the smooth muscle of the dilator muscle
D) It's avascular

10. Which of the following muscles in the eye are NOT B) Dilator muscle
smooth muscle?
A) Constrictor muscle
B) Dilator muscle
C) Ciliary muscle
D) All of them are smooth muscle

11. Which of the following is/are true about accommoda- D) A and B
tion?
A) It's the ability of the eye to change its focus to


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different distances
B) Changing tensions in zonules help change the
shape of the lens
C) It's controlled by contraction of the skeletal muscle
in the ciliary body
D) A and B
E) A, B, and C

12. Which of the following structure(s) is/are labeled cor- B) Zonule- ligament that
rectly AND match(es) their description? changes the shape of the
A) Lens-regulates how much light reaches the retina lens through contraction
B) Zonule- ligament that changes the shape of the lens of the ciliary muscle
through contraction of the ciliary muscle
C) Iris- Focuses the light on the retina
D) A and B
E) A, B, and C




13. Which of the following is/are true about the trabecular E) A, B, and C
meshwork?
A) It resists the outflow of aqueous humor
B) It helps regulate the pressure in the eye
C) It's found in the limbus region of the eye
D) A and B
E) A, B, and C

14. Which of the following structure(s) is/are labeled cor- E) A, B, and C
rectly?
A) Dilator muscle
B) Pigmented epithelium of the ciliary processes