BIOD 152 Module 2 Exam Special Senses & Endocrine
System Actual Exam 2026/2027 – Complete 30 Questions
with Detailed Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
SECTION A: Special Senses – Vision & The Eye (Q1–Q6)
Q1: Which structure produces the aqueous humor that fills the anterior segment of the
eye?
A. The vitreous body, which secretes fluid continuously after birth
B. The ciliary processes of the ciliary body [CORRECT]
C. The lacrimal gland, which drains into the nasolacrimal duct
D. The pigmented epithelium of the retina
Correct Answer: B
Rationale: The ciliary processes actively secrete aqueous humor into the posterior
chamber, after which it flows through the pupil and drains via the canal of Schlemm.
The vitreous body is not continuously produced, and the lacrimal gland makes tears, not
intraocular fluid.
Q2: A 58-year-old reports a gradual "tunneling" of peripheral vision. Tonometry
measures intraocular pressure at 34 mmHg (normal 12–21 mmHg), and fundoscopy
shows optic disc cupping. Which mechanism underlies this condition?
A. Clouding of the lens blocking light transmission
B. Degeneration of the macular photoreceptors
C. Obstruction of aqueous humor drainage through the scleral venous sinus (canal of
Schlemm), elevating intraocular pressure [CORRECT]
D. Separation of the retina from the choroid layer
Correct Answer: C
Rationale: Glaucoma results from impaired aqueous outflow through the canal of
Schlemm, raising pressure that damages the optic nerve and peripheral vision first.
Lens clouding describes cataracts, macular degeneration destroys central vision, and
retinal detachment presents with flashes and curtain-like deficits rather than pressure
elevation.
, Q3: A 52-year-old holds her menu at arm's length to read it but sees distant signs clearly.
Which condition and cause best explain this finding?
A. Myopia caused by an abnormally long eyeball
B. Hyperopia caused by an abnormally short eyeball
C. Presbyopia caused by loss of lens elasticity, reducing accommodation for near vision
[CORRECT]
D. Astigmatism caused by irregular corneal curvature
Correct Answer: C
Rationale: After age 40–50, the lens stiffens and can no longer round up for near focus,
producing presbyopia corrected with convex reading lenses. Myopia blurs distant vision,
hyperopia affects both distances (especially near), and astigmatism blurs all vision
irregularly.
Q4: In a posterior view of a dissected retina, which identified region contains only cones
and provides the sharpest, most acute color vision?
A. The optic disc, where the optic nerve exits
B. The ora serrata, at the anterior retinal margin
C. The peripheral macula lutea
D. The fovea centralis, at the center of the macula lutea [CORRECT]
Correct Answer: D
Rationale: The fovea centralis contains a maximal cone density with no overlying
bipolar/ganglion cells, yielding the sharpest vision. The optic disc is the blind spot with
no photoreceptors, and the retinal periphery is rod-dominant for dim-light vision.
Q5: A 71-year-old describes five years of progressively "cloudy" vision, glare while night
driving, and faded colors. The lens appears milky-white on examination. What is the
most likely diagnosis?
A. Open-angle glaucoma
B. Cataract — opacity of the lens [CORRECT]
C. Age-related macular degeneration
D. Acute conjunctivitis
Correct Answer: B
Rationale: Progressive lens opacification defines a cataract, classically producing
clouding, glare, and color fading. Glaucoma involves pressure and peripheral field loss,
macular degeneration spares peripheral vision but destroys central acuity, and
conjunctivitis presents with redness and discharge rather than lens opacity.
Q6: A patient's near objects consistently focus behind the retina because his eyeball is
slightly too short. Which correction restores clear near vision, and why?
A. A concave lens, which diverges incoming rays before they enter the eye
System Actual Exam 2026/2027 – Complete 30 Questions
with Detailed Rationales | 100% Verified | Pass Guaranteed –
A+ Graded
SECTION A: Special Senses – Vision & The Eye (Q1–Q6)
Q1: Which structure produces the aqueous humor that fills the anterior segment of the
eye?
A. The vitreous body, which secretes fluid continuously after birth
B. The ciliary processes of the ciliary body [CORRECT]
C. The lacrimal gland, which drains into the nasolacrimal duct
D. The pigmented epithelium of the retina
Correct Answer: B
Rationale: The ciliary processes actively secrete aqueous humor into the posterior
chamber, after which it flows through the pupil and drains via the canal of Schlemm.
The vitreous body is not continuously produced, and the lacrimal gland makes tears, not
intraocular fluid.
Q2: A 58-year-old reports a gradual "tunneling" of peripheral vision. Tonometry
measures intraocular pressure at 34 mmHg (normal 12–21 mmHg), and fundoscopy
shows optic disc cupping. Which mechanism underlies this condition?
A. Clouding of the lens blocking light transmission
B. Degeneration of the macular photoreceptors
C. Obstruction of aqueous humor drainage through the scleral venous sinus (canal of
Schlemm), elevating intraocular pressure [CORRECT]
D. Separation of the retina from the choroid layer
Correct Answer: C
Rationale: Glaucoma results from impaired aqueous outflow through the canal of
Schlemm, raising pressure that damages the optic nerve and peripheral vision first.
Lens clouding describes cataracts, macular degeneration destroys central vision, and
retinal detachment presents with flashes and curtain-like deficits rather than pressure
elevation.
, Q3: A 52-year-old holds her menu at arm's length to read it but sees distant signs clearly.
Which condition and cause best explain this finding?
A. Myopia caused by an abnormally long eyeball
B. Hyperopia caused by an abnormally short eyeball
C. Presbyopia caused by loss of lens elasticity, reducing accommodation for near vision
[CORRECT]
D. Astigmatism caused by irregular corneal curvature
Correct Answer: C
Rationale: After age 40–50, the lens stiffens and can no longer round up for near focus,
producing presbyopia corrected with convex reading lenses. Myopia blurs distant vision,
hyperopia affects both distances (especially near), and astigmatism blurs all vision
irregularly.
Q4: In a posterior view of a dissected retina, which identified region contains only cones
and provides the sharpest, most acute color vision?
A. The optic disc, where the optic nerve exits
B. The ora serrata, at the anterior retinal margin
C. The peripheral macula lutea
D. The fovea centralis, at the center of the macula lutea [CORRECT]
Correct Answer: D
Rationale: The fovea centralis contains a maximal cone density with no overlying
bipolar/ganglion cells, yielding the sharpest vision. The optic disc is the blind spot with
no photoreceptors, and the retinal periphery is rod-dominant for dim-light vision.
Q5: A 71-year-old describes five years of progressively "cloudy" vision, glare while night
driving, and faded colors. The lens appears milky-white on examination. What is the
most likely diagnosis?
A. Open-angle glaucoma
B. Cataract — opacity of the lens [CORRECT]
C. Age-related macular degeneration
D. Acute conjunctivitis
Correct Answer: B
Rationale: Progressive lens opacification defines a cataract, classically producing
clouding, glare, and color fading. Glaucoma involves pressure and peripheral field loss,
macular degeneration spares peripheral vision but destroys central acuity, and
conjunctivitis presents with redness and discharge rather than lens opacity.
Q6: A patient's near objects consistently focus behind the retina because his eyeball is
slightly too short. Which correction restores clear near vision, and why?
A. A concave lens, which diverges incoming rays before they enter the eye
