UCONN PNB 2264 EXAM 3 2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
Which of the following are found in the dorsal root ganglia of the spinal cord? - (ANSWER)Cell bodies of
primary afferent (sensory) neurons
Sensory transduction is the process of converting - (ANSWER)Stimulus energy into a change in
membrane potential
Increased intensity of a pressure stimulus (applied to the same spot on your finger) is coded by ______ .
- (ANSWER)Increased frequency of afferent action potentials
Two-point discrimination is _________ on the lips than on the knee. One reason for this is that there is
_________ overlap of receptive fields on the lips. - (ANSWER)Better; more
A patient with an injury to the left brachial plexus would have what symptoms? - (ANSWER)Loss of both
sensory and motor function to the left upper extremity
Cell bodies of alpha motor neurons to skeletal muscle are located in the ____________ of the spinal
cord. - (ANSWER)Ventral horn
Which term best describes receptors that detect stimuli from the external environment? -
(ANSWER)Exteroceptors
A sensory unit consists of - (ANSWER)One afferent neuron and all its receptors
Consider transmission of a discriminatory touch stimulus. As a result of lateral inhibition, the
______________ is increased. - (ANSWER)Difference between firing rate of strongly activated and less-
strongly activated second order neurons
The diencephalon contains the ________ . - (ANSWER)Thalamus and hypothalamus
Cranial nerve nuclei and a respiratory control center are found in the - (ANSWER)Medulla
, UCONN PNB 2264 EXAM 3 2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
The primary somatosensory cortex (S1) is located in the ____________ of the ______________ . -
(ANSWER)Postcentral gyrus; parietal lobe
The ability to identify an object using just touch is called __________________ and is only possible when
sensory information reaches the _______________ . - (ANSWER)Stereognosis; sensory association
cortex
Retinal ganglion cell axons from the nasal retina form part of the _______ and _______ to the opposite
side at the optic chiasm. - (ANSWER)Optic Nerve (II); cross
Arrange the sequence of structures making up an anterolateral (AL) system tract in the correct order,
starting with transduction at the receptor and ending with primary somatosensory cortex (S1). -
(ANSWER)Thermoreceptor; dorsal horn; spinothalamic tract; thalamus; S1
At what point does sensory information traveling in the fasciculus cuneatus cross to the contralateral
side? - (ANSWER)In the medulla
Visual information is heavily processed to create the visual world. This processing first occurs at which
level of the visual hierarchy? - (ANSWER)Retina
Hitting the quadriceps tendon with a reflex hammer (quick stretch) will activate _____________ ,
causing monosynaptic (direct) activation of motor neurons to _____________ muscles and activation of
this sensory pathway: _________ . - (ANSWER)Muscle spindles; ipsilateral quadriceps; fasciculus gracilis
Unlike in the dorsal column system, the anterolateral system first order neurons ________ . -
(ANSWER)Synapse in the spinal cord
The ______________ branches from the internal carotid artery, and is a common stroke
(Cerebrovascular Accident/CVA) location. A CVA involving this vessel will cause contralateral hemiplegia.
- (ANSWER)Middle cerebral artery
GRADED | WITH EXPERT SOLUTIONS
Which of the following are found in the dorsal root ganglia of the spinal cord? - (ANSWER)Cell bodies of
primary afferent (sensory) neurons
Sensory transduction is the process of converting - (ANSWER)Stimulus energy into a change in
membrane potential
Increased intensity of a pressure stimulus (applied to the same spot on your finger) is coded by ______ .
- (ANSWER)Increased frequency of afferent action potentials
Two-point discrimination is _________ on the lips than on the knee. One reason for this is that there is
_________ overlap of receptive fields on the lips. - (ANSWER)Better; more
A patient with an injury to the left brachial plexus would have what symptoms? - (ANSWER)Loss of both
sensory and motor function to the left upper extremity
Cell bodies of alpha motor neurons to skeletal muscle are located in the ____________ of the spinal
cord. - (ANSWER)Ventral horn
Which term best describes receptors that detect stimuli from the external environment? -
(ANSWER)Exteroceptors
A sensory unit consists of - (ANSWER)One afferent neuron and all its receptors
Consider transmission of a discriminatory touch stimulus. As a result of lateral inhibition, the
______________ is increased. - (ANSWER)Difference between firing rate of strongly activated and less-
strongly activated second order neurons
The diencephalon contains the ________ . - (ANSWER)Thalamus and hypothalamus
Cranial nerve nuclei and a respiratory control center are found in the - (ANSWER)Medulla
, UCONN PNB 2264 EXAM 3 2026 QUESTIONS AND ANSWERS | A+
GRADED | WITH EXPERT SOLUTIONS
The primary somatosensory cortex (S1) is located in the ____________ of the ______________ . -
(ANSWER)Postcentral gyrus; parietal lobe
The ability to identify an object using just touch is called __________________ and is only possible when
sensory information reaches the _______________ . - (ANSWER)Stereognosis; sensory association
cortex
Retinal ganglion cell axons from the nasal retina form part of the _______ and _______ to the opposite
side at the optic chiasm. - (ANSWER)Optic Nerve (II); cross
Arrange the sequence of structures making up an anterolateral (AL) system tract in the correct order,
starting with transduction at the receptor and ending with primary somatosensory cortex (S1). -
(ANSWER)Thermoreceptor; dorsal horn; spinothalamic tract; thalamus; S1
At what point does sensory information traveling in the fasciculus cuneatus cross to the contralateral
side? - (ANSWER)In the medulla
Visual information is heavily processed to create the visual world. This processing first occurs at which
level of the visual hierarchy? - (ANSWER)Retina
Hitting the quadriceps tendon with a reflex hammer (quick stretch) will activate _____________ ,
causing monosynaptic (direct) activation of motor neurons to _____________ muscles and activation of
this sensory pathway: _________ . - (ANSWER)Muscle spindles; ipsilateral quadriceps; fasciculus gracilis
Unlike in the dorsal column system, the anterolateral system first order neurons ________ . -
(ANSWER)Synapse in the spinal cord
The ______________ branches from the internal carotid artery, and is a common stroke
(Cerebrovascular Accident/CVA) location. A CVA involving this vessel will cause contralateral hemiplegia.
- (ANSWER)Middle cerebral artery
