BIO 242 2025/2026 Exam Questions and
Verified Answers | Already Graded A+
Saltatory conduction is made possible by _____.
A) large nerve fibers
B) the myelin sheath
C) biphasic impulses
D) erratic transmission of nerve impulses - 🧠 ANSWER ✔✔B) the myelin
sheath
Which part of the action potential occurs when the Na+ channels are
inactivating and K+ channels open?
A) depolarization
,B) repolarization
C) resting state
D) hyperpolarization - 🧠 ANSWER ✔✔B) repolarization
Which type of ion channel opens in response to changes in membrane
potential?
A) mechanically gated
B) voltage-gated
C) leakage
D) chemically gated - 🧠 ANSWER ✔✔B) voltage-gated
The ____ division of the autonomic nervous system has its ganglia near the
spinal column.
A) thoracic
B) parasympathetic
C) somatic
D) sympathetic - 🧠 ANSWER ✔✔B) parasympathetic
,A neuron that has as its primary function the job of connecting other
neurons is called a(n) _____.
A) glial cell
B) interneuron
C) efferent neuron
D) afferent neuron - 🧠 ANSWER ✔✔B) interneuron
Emptying of the bladder or rectum are examples of which type of reflex?
A) withdrawal
B) abdominal
C) visceral
D) plantar - 🧠 ANSWER ✔✔C) visceral
The somatic and autonomic nervous systems differ in all the following
EXCEPT ____.
A) regulation of activity by higher brain centers
B) their effectors
C) target organ responses to their neurotransmitters
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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, D) their efferent pathways and ganglia - 🧠 ANSWER ✔✔A) regulation of
activity by higher brain centers
Cranial nerve II, the optic nerve sends nerve impulses to the brain carrying
information about the things we see. These nerve fibers most likely belong
to which division of the nervous system?
A) parasympathetic division
B) sensory (afferent) division
C) sympathetic division
D) somatic nervous system - 🧠 ANSWER ✔✔B) sensory (afferent) division
Which neuroglia is functionally similar to an astrocyte, surrounding neuron
cell bodies in the PNS?
A) satellite cells
B) Schwann cells
C) oligodendryocytes
D) ependymal - 🧠 ANSWER ✔✔A) satellite cells
Activation of effector organs to produce a response describes ____.
A) integration
Verified Answers | Already Graded A+
Saltatory conduction is made possible by _____.
A) large nerve fibers
B) the myelin sheath
C) biphasic impulses
D) erratic transmission of nerve impulses - 🧠 ANSWER ✔✔B) the myelin
sheath
Which part of the action potential occurs when the Na+ channels are
inactivating and K+ channels open?
A) depolarization
,B) repolarization
C) resting state
D) hyperpolarization - 🧠 ANSWER ✔✔B) repolarization
Which type of ion channel opens in response to changes in membrane
potential?
A) mechanically gated
B) voltage-gated
C) leakage
D) chemically gated - 🧠 ANSWER ✔✔B) voltage-gated
The ____ division of the autonomic nervous system has its ganglia near the
spinal column.
A) thoracic
B) parasympathetic
C) somatic
D) sympathetic - 🧠 ANSWER ✔✔B) parasympathetic
,A neuron that has as its primary function the job of connecting other
neurons is called a(n) _____.
A) glial cell
B) interneuron
C) efferent neuron
D) afferent neuron - 🧠 ANSWER ✔✔B) interneuron
Emptying of the bladder or rectum are examples of which type of reflex?
A) withdrawal
B) abdominal
C) visceral
D) plantar - 🧠 ANSWER ✔✔C) visceral
The somatic and autonomic nervous systems differ in all the following
EXCEPT ____.
A) regulation of activity by higher brain centers
B) their effectors
C) target organ responses to their neurotransmitters
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, D) their efferent pathways and ganglia - 🧠 ANSWER ✔✔A) regulation of
activity by higher brain centers
Cranial nerve II, the optic nerve sends nerve impulses to the brain carrying
information about the things we see. These nerve fibers most likely belong
to which division of the nervous system?
A) parasympathetic division
B) sensory (afferent) division
C) sympathetic division
D) somatic nervous system - 🧠 ANSWER ✔✔B) sensory (afferent) division
Which neuroglia is functionally similar to an astrocyte, surrounding neuron
cell bodies in the PNS?
A) satellite cells
B) Schwann cells
C) oligodendryocytes
D) ependymal - 🧠 ANSWER ✔✔A) satellite cells
Activation of effector organs to produce a response describes ____.
A) integration
