PORTAGE BIOD 152 MODULE 3 EXAM QUESTIONS & ANSWERS 2026-2027 | COMPLETE STUDY … EXAM
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage BIOD 152 Module 3 Exam
Questions & Answers 2026-2027 |
Complete Study Guide | Verified
Practice Test (Rationales)
Verified Answers Exam Ready With Rationales
42 QUESTIONS
DOCUMENT OVERVIEW
This document contains 42 verified exam questions with correct answers and detailed rationales focused on
human physiology and sensory systems. Each question is paired with an explanation, enhancing
understanding of the material. It is suitable for studying, reviewing concepts, and preparing for certification
exams in the biological sciences.
CONTENTS
01 General Sensory Functions Q1–Q7
02 Vision Anatomy Q8–Q14
03 Vision Pathways Q15–Q20
04 Hearing Anatomy Q21–Q26
05 Hearing Pathways Q27–Q31
06 Olfaction Physiology Q32–Q36
07 Taste Physiology Q37–Q42
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 42
what sense does not have specialized sense organs?
CORRECT ANSWER
touch
RATIONALE
Touch is mediated by mechanoreceptors distributed throughout the skin and other tissues rather than being localized in specialized
organs, distinguishing it from senses like vision or hearing, which rely on dedicated structures. This pervasive distribution allows for a
broad and immediate response to tactile stimuli across the body.
Q2 QUESTION 2 OF 42
true or false: the more numerous type of photoreceptors are rods
CORRECT ANSWER
true
RATIONALE
Rods are photoreceptors that are highly sensitive to light and are primarily responsible for vision in low-light conditions, outnumbering
cones by approximately 20:1 in the human retina, making them crucial for night vision. Their prevalence underscores their role in detecting
motion and providing peripheral vision, for survival in dim environments.
Q3 QUESTION 3 OF 42
the _______ is controlled by the abducens nerve
CORRECT ANSWER
lateral rectus
RATIONALE
The lateral rectus muscle is responsible for abduction of the eye and is innervated by the abducens nerve (cranial nerve VI), which is critical
for lateral eye movement. Dysfunction of this nerve can lead to strabismus and impaired visual tracking.
Q4 QUESTION 4 OF 42
Page 2
, Your elderly patient is discussing her vision problems. She describes her vision as blurry. Her left eye deviates medially when
looking straight ahead. what is most likely causing the vision problem?
CORRECT ANSWER
-abducens nerve
-the abducens nerve controls the lateral rectus. damage would cause a muscle imbalance. the medial rectus would pull the eye
medially when looking straight ahead causing blurred vision (diplopia)
RATIONALE
Damage to the abducens nerve disrupts the function of the lateral rectus muscle, leading to an unopposed action of the medial rectus
muscle, which results in medial deviation of the eye and blurred vision or diplopia when attempting to gaze straight ahead. This illustrates
the principle of ocular muscle balance and the role of cranial nerves in eye movement coordination.
Q5 QUESTION 5 OF 42
label the figure below with the correct terminology:
CORRECT ANSWER
A- Nasal Cavity
B- Olfactory Nerves (CN 1)
C- Olfactory Bulb
D- Olfactory Tract
E-Ethmoid bone (cribiform plate)
Page 3
P R O F E S S I O N A L P R A C T I C E M AT E R I A L S
Portage BIOD 152 Module 3 Exam
Questions & Answers 2026-2027 |
Complete Study Guide | Verified
Practice Test (Rationales)
Verified Answers Exam Ready With Rationales
42 QUESTIONS
DOCUMENT OVERVIEW
This document contains 42 verified exam questions with correct answers and detailed rationales focused on
human physiology and sensory systems. Each question is paired with an explanation, enhancing
understanding of the material. It is suitable for studying, reviewing concepts, and preparing for certification
exams in the biological sciences.
CONTENTS
01 General Sensory Functions Q1–Q7
02 Vision Anatomy Q8–Q14
03 Vision Pathways Q15–Q20
04 Hearing Anatomy Q21–Q26
05 Hearing Pathways Q27–Q31
06 Olfaction Physiology Q32–Q36
07 Taste Physiology Q37–Q42
Page 1
, E XA M Q U EST I O N S
Q1 QUESTION 1 OF 42
what sense does not have specialized sense organs?
CORRECT ANSWER
touch
RATIONALE
Touch is mediated by mechanoreceptors distributed throughout the skin and other tissues rather than being localized in specialized
organs, distinguishing it from senses like vision or hearing, which rely on dedicated structures. This pervasive distribution allows for a
broad and immediate response to tactile stimuli across the body.
Q2 QUESTION 2 OF 42
true or false: the more numerous type of photoreceptors are rods
CORRECT ANSWER
true
RATIONALE
Rods are photoreceptors that are highly sensitive to light and are primarily responsible for vision in low-light conditions, outnumbering
cones by approximately 20:1 in the human retina, making them crucial for night vision. Their prevalence underscores their role in detecting
motion and providing peripheral vision, for survival in dim environments.
Q3 QUESTION 3 OF 42
the _______ is controlled by the abducens nerve
CORRECT ANSWER
lateral rectus
RATIONALE
The lateral rectus muscle is responsible for abduction of the eye and is innervated by the abducens nerve (cranial nerve VI), which is critical
for lateral eye movement. Dysfunction of this nerve can lead to strabismus and impaired visual tracking.
Q4 QUESTION 4 OF 42
Page 2
, Your elderly patient is discussing her vision problems. She describes her vision as blurry. Her left eye deviates medially when
looking straight ahead. what is most likely causing the vision problem?
CORRECT ANSWER
-abducens nerve
-the abducens nerve controls the lateral rectus. damage would cause a muscle imbalance. the medial rectus would pull the eye
medially when looking straight ahead causing blurred vision (diplopia)
RATIONALE
Damage to the abducens nerve disrupts the function of the lateral rectus muscle, leading to an unopposed action of the medial rectus
muscle, which results in medial deviation of the eye and blurred vision or diplopia when attempting to gaze straight ahead. This illustrates
the principle of ocular muscle balance and the role of cranial nerves in eye movement coordination.
Q5 QUESTION 5 OF 42
label the figure below with the correct terminology:
CORRECT ANSWER
A- Nasal Cavity
B- Olfactory Nerves (CN 1)
C- Olfactory Bulb
D- Olfactory Tract
E-Ethmoid bone (cribiform plate)
Page 3
