BIO 264 EXAM 4 COMPREHENSIVE
QUESTIONS AND SOLUTIONS
◉ A reflex
Answer: is an automatic response to a stimulus produced by a
reflex arc
◉ The lower motor neurons
Answer: have cell bodies in the anterior horns of the spinal cord
and in the brainstem
◉ These are all properties of reflexes except __________.
A) reflex responses are very predictable.
B) reflexes are responses to sensory inputs.
C) reflexes are quick responses of the nervous system.
D) reflexes are not voluntary.
Correct Answer
E) reflexes are spontaneous actions of the nervous system.
,Answer: E) reflexes are spontaneous actions of the nervous
system.
◉ proprioceptors
Answer: Somatic reflexes involve specialized sensory receptors
called proprioceptors that monitor the position of our limbs in
space, body movement, and the amount of strain on our
musculoskeletal system.
◉ The lower motor neurons
Answer: have cell bodies in the anterior horns of the spinal cord
and in the brainstem
◉ The upper motor neurons
Answer: are axons that carry action potentials from the upper
brain (cerebrum) to the brainstem or spinal cord
◉ A reflex
Answer: is an automatic response to a stimulus produced by a
reflex arc
◉ These are all properties of reflexes except __________.
A) reflex responses are very predictable.
B) reflexes are responses to sensory inputs.
, C) reflexes are quick responses of the nervous system.
D) reflexes are not voluntary.
E) reflexes are spontaneous actions of the nervous system.
Answer: E) reflexes are spontaneous actions of the nervous
system.
◉ The flexor reflex
Answer: removes a limb or body part from a painful stimulus
◉ A muscle spindle
Answer: A) involves alpha and gamma motor neurons
B) is the sensory receptor of a stretch reflex
C) is a small number of specialized skeletal muscle fibers
◉ Which is NOT a result of a stretch reflex?
A) sensory neurons conduct action potentials to the spinal cord
B) muscle spindles detect stretch of the muscle
QUESTIONS AND SOLUTIONS
◉ A reflex
Answer: is an automatic response to a stimulus produced by a
reflex arc
◉ The lower motor neurons
Answer: have cell bodies in the anterior horns of the spinal cord
and in the brainstem
◉ These are all properties of reflexes except __________.
A) reflex responses are very predictable.
B) reflexes are responses to sensory inputs.
C) reflexes are quick responses of the nervous system.
D) reflexes are not voluntary.
Correct Answer
E) reflexes are spontaneous actions of the nervous system.
,Answer: E) reflexes are spontaneous actions of the nervous
system.
◉ proprioceptors
Answer: Somatic reflexes involve specialized sensory receptors
called proprioceptors that monitor the position of our limbs in
space, body movement, and the amount of strain on our
musculoskeletal system.
◉ The lower motor neurons
Answer: have cell bodies in the anterior horns of the spinal cord
and in the brainstem
◉ The upper motor neurons
Answer: are axons that carry action potentials from the upper
brain (cerebrum) to the brainstem or spinal cord
◉ A reflex
Answer: is an automatic response to a stimulus produced by a
reflex arc
◉ These are all properties of reflexes except __________.
A) reflex responses are very predictable.
B) reflexes are responses to sensory inputs.
, C) reflexes are quick responses of the nervous system.
D) reflexes are not voluntary.
E) reflexes are spontaneous actions of the nervous system.
Answer: E) reflexes are spontaneous actions of the nervous
system.
◉ The flexor reflex
Answer: removes a limb or body part from a painful stimulus
◉ A muscle spindle
Answer: A) involves alpha and gamma motor neurons
B) is the sensory receptor of a stretch reflex
C) is a small number of specialized skeletal muscle fibers
◉ Which is NOT a result of a stretch reflex?
A) sensory neurons conduct action potentials to the spinal cord
B) muscle spindles detect stretch of the muscle
