Exam 3
The epineurium
bundles fascicles into nerves
What is the large C-shaped mass of white matter that consists of nerve fibers that connect the two cerebral hemispheres?
corpus callosum
The central sulcus separates the
frontal and parietal lobes
Receptors responsible for the control of muscle contractions are
golgi tendon organs
All spinal nerves from C2 to L5 exit the vertebral column through a(n)
intervertebral foramen
Which is not a function of the limbic system?
speech
In ascending pathway, axons of the secondary neuron travel from the
spinal cord through the brainstem to the thalamus
Free nerve endings respond to
temperature change and pain
The auditory cortex is located in the
temporal lobe
Which of the following terms does NOT belong with the others?
thalamus
The primary somatic sensory or general sensory area is located in
the postcentral gyrus
The sciatic nerve is composed of the
tibial nerve and the common fibular nerve
Which is not a function of the cerebrospinal fluid?
provide lubrication between joints
Cranial reflexes serve to
all of these choices are correct
The middle, thin, spider-like meninx is the
arachnoid mater
Cerebrospinal fluid fills in the space between the
arachnoid mater and pia mater
The white matter of the cerebellum forms a branching network known as the
arbor vitae
Association fibers connect
areas of the cerebral cortex within the same hemisphere
In the cerebrum, the basal nuclei are the___nucleus, which is described as having a tail, and the___nucleus, which is described as being lens-shaped.
caudate; lentiform
Changes in the blood concentration of glucose, oxygen, and hydrogen are detected by
chemoreceptors
The CSF is produced by specialized epindymal cells in the ventricles in areas called the___.
choroid plexuses
The primary motor area
contains a larger area for control of the hand and fingers than for control of the arm and elbow
Upper motor neurons
control skeletal muscles
Lesions on one side of the spinal cord cut the lateral spinothalamic tract and eliminate
cutaneous sensations on the opposite side of the body below the level of injury
Pacinian corpuscles respond to
deep cutaneous pressure and vibration
Damage to the phrenic nerve would result in
difficulty breathing
The thickest of the meninges is the
dura mater
The portion of the dorsal column/medial lemniscal tract that carries proprioceptive sensations from nerve endings in the feet and legs is the
fasciculus gracilis
The conus medullaris
is a tapered, cone like region immediately inferior to the lumbar enlargement
Which of the following is correctly associated with the medulla oblongata?
it contains nuclei for regulation of heart rate and blood vessel diameter
Which of the following is an ascending pathway in the spinal cord?
lateral spinothalamic tract
The spinal cord
links the peripheral nervous system to the brain
If you pinch your index finger in a door, pain sensations are carried via the___nerve.
median
A patient with a traumatic head injury may exhibit vomiting as a result of irritation of nuclei in the
medulla oblongata
Specialized muscle fibers associated with detection of muscle length are
muscle spindles
The brachial plexus supplies nerves that function to contract which of the following?
muscles of the arm and forearm
In the CNS, clusters of gray matter containing cell bodies are called
nuclei
The ventral root of a spinal nerve contains
only motor fibers
The part of the brain that connects the medulla to the midbrain is the
pons
The perception of position and movement of body parts is
proprioception
The blood-brain functions to
regulate the movement of materials from the blood to the brain
Which of the following is mismatched?
ruffini end organs- temperature
Spinal nerves exiting the cord from the level of L4 to S4 form the
sacral plexus
Structurally, the simplest reflex is the
stretch reflex
During a spinal tap, cerebrospinal fluid is obtained from which of the following locations?
subarachnoid space
Where is cerebrospinal fluid found around the spinal cord?
subarachnoid space
Between the dura mater and the arachnoid mater lies the___, and between the arachnoid mater and the pia mater lies the___.
subdural space; subarachnoid space
The nucleus in the midbrain is the___, and the nucleus in the diencephalon is the___.
substantia nigra; subthalamic
The nucleus in the midbrains is the___, and the nucleus in the diencephalon is the___.
substantia nigra; subthalamic
What is found in the dorsal root ganglion?
the cell bodies of pseudo-unipolar sensory neurons
The patellar or knee-jerk reflex is a classic example of
the stretch reflex
Which of the following is false?
the thalamus controls many endocrine function
Which of the following is a somatic sense?
touch
When a person hits their funny bone, they cause temporary damage to the___nerve.
ulnar
What is the role of the red nuclei?
unconscious regulation and coordination of motor activities
A reflex that protects limbs by removing them from painful stimuli is the
withdrawal reflex