BIOL251: Human Anatomy & Physiology I w/Lab 2025
Module 7 Exam Review / 70+ questions
Module 7: Peripheral Nervous System, Reflex Activity, and the PNS
By PortageMaster, Stuvia
✅ Correct answers
Question 1
Which sensory receptor is responsible for detecting the position and movement of the body?
● Nociceptors
● Exteroceptors
● Interoceptors
● ✅ Proprioceptors
Question 2
True or False: Ruffini’s corpuscles detect stretch, sustained pressure, and warmth.
● ✅ True
● False
,Question 3
What is paradoxical cold?
● When warm receptors mistakenly signal cold sensations
● When cold receptors stop firing in extremely cold conditions
● ✅ When cold receptors fire in response to an extreme heat stimulus
● When both warm and cold receptors stop firing simultaneously
Question 4
Which structure in the spinal cord receives incoming sensory information?
● Central canal
● Ventral horn
● Anterior horn
● ✅ Dorsal horn
Question 5
Which of the following statements is true about polysynaptic reflex arcs?
● They are faster than monosynaptic reflex arcs.
● They involve only two neurons.
● They allow only a single muscle group to respond.
● ✅ They involve an interneuron for more complex processing.
, Question 6
Which of the following is an example of an effector in a reflex arc?
● A sensory neuron
● Thermoreceptor in the skin
● ✅ A muscle contracting to move the hand away from a flame
● A motor neuron
Question 7
What is a common feature of both somatic and autonomic reflexes?
● ✅ Both involve a sensory neuron and a motor neuron.
● Both reflexes originate in the brainstem only.
● Both control only skeletal muscles.
● Both are voluntary responses to stimuli.
Question 8
True or False: The Jendrassik maneuver decreases the patellar reflex by increasing inhibitory signals
to the muscles.
● True
● ✅ False
(Note: The Jendrassik maneuver enhances the patellar reflex by decreasing inhibitory signals to the muscles.)
Module 7 Exam Review / 70+ questions
Module 7: Peripheral Nervous System, Reflex Activity, and the PNS
By PortageMaster, Stuvia
✅ Correct answers
Question 1
Which sensory receptor is responsible for detecting the position and movement of the body?
● Nociceptors
● Exteroceptors
● Interoceptors
● ✅ Proprioceptors
Question 2
True or False: Ruffini’s corpuscles detect stretch, sustained pressure, and warmth.
● ✅ True
● False
,Question 3
What is paradoxical cold?
● When warm receptors mistakenly signal cold sensations
● When cold receptors stop firing in extremely cold conditions
● ✅ When cold receptors fire in response to an extreme heat stimulus
● When both warm and cold receptors stop firing simultaneously
Question 4
Which structure in the spinal cord receives incoming sensory information?
● Central canal
● Ventral horn
● Anterior horn
● ✅ Dorsal horn
Question 5
Which of the following statements is true about polysynaptic reflex arcs?
● They are faster than monosynaptic reflex arcs.
● They involve only two neurons.
● They allow only a single muscle group to respond.
● ✅ They involve an interneuron for more complex processing.
, Question 6
Which of the following is an example of an effector in a reflex arc?
● A sensory neuron
● Thermoreceptor in the skin
● ✅ A muscle contracting to move the hand away from a flame
● A motor neuron
Question 7
What is a common feature of both somatic and autonomic reflexes?
● ✅ Both involve a sensory neuron and a motor neuron.
● Both reflexes originate in the brainstem only.
● Both control only skeletal muscles.
● Both are voluntary responses to stimuli.
Question 8
True or False: The Jendrassik maneuver decreases the patellar reflex by increasing inhibitory signals
to the muscles.
● True
● ✅ False
(Note: The Jendrassik maneuver enhances the patellar reflex by decreasing inhibitory signals to the muscles.)
