chapter 13: peripheral nervous system Flashcards
Which of the receptor types might function as a nociceptor?
A: Nociceptors
Which of these receptor types functions as an exteroceptor?
All of them
Which of the receptor types shown here functions exclusively as a proprioceptor?
B
Which of the receptor types contributes to the sense of touch by responding to light pressure?
E
Which type of sensory receptor allows us to feel an insect landing on our skin?
mechanoreceptor
Three main levels of neural integration operate in the somatosensory system. Which level involves the spinal cord?
circuit level
Which connective tissue layer directly surrounds individual axons in a nerve?
endoneurium
Which cranial nerve innervates most of the visceral organs?
vagus
Which cranial nerve transmits auditory information?
vestibulocochlear
Gluteal muscle innervation comes from which plexus?
sacral
Spinal nerves are all classified as __________.
mixed nerves
The phrenic nerve is a branch from the __________.
cervical plexus
Which reflex is triggered when a stranger suddenly grasps your arm?
crossed-extensor reflex
The knee-jerk reflex is an example of a __________.
stretch reflex
Which of the following is NOT used to classify sensory receptors?
the number of dendritic endings present
True or False:
Sensory stimuli that activate receptors generate action potentials that are sent into the CNS.
False
__________ are receptors that can respond to painful stimuli.
Nociceptors
Which of the following is NOT correct concerning nerves?
A. Nerves do not contain cell bodies.
B. Nerves are analogous to tracts in the CNS.
C. Nerves are covered by an outer sheath called the epineurium.
D. Nerves are collection of axons of either sensory or motor neurons but not both.
D. Nerves are collection of axons of either sensory or motor neurons but not both.
Which of the following cranial nerves carries only motor information?
A. optic
B. olfactory
C. abducens
D. trigeminal
C. abducens
Which pair below is incorrect?
A. cranial nerve III: oculomotor nerve
B. cranial nerve III: pupillary constriction
C. optic nerve: sensory
D. cranial nerve IV: sensory
E. cranial nerve VI: eye movement
D. cranial nerve IV: sensory
Which of the following carries no sensory information?
A. optic nerve
B. trigeminal nerve
C. vestibulocochlear nerve
D. hypoglossal nerve
D. hypoglossal nerve
In carpal tunnel syndrome, the __________ is compressed.
median nerve
Which of the following is NOT required for a reflex arc?
A. motor neurons
B. receptors
C. sensory neurons
D. interneurons
D. interneurons
You are removing a hot pan of cookies from the oven, using a pot holder. Suddenly, you feel a surge of heat through the pot holder. Why don’t you react by dropping the baking pan and spilling cookies all over the floor?
Cortical integration centers override the spinal reflex.
Classify the neuron at A.
sensory neuron
The synapse between which of the following two neurons is a part of a monosynaptic reflex arc?
A + B
The letter E would represent which of the following muscles during the knee-jerk reflex?
rectus femoris
True or False:
The sensory division of the PNS is also known as the efferent division.
False
