Exam 4
cerebrospinal fluid is secreted partly by a mass of blood capillaries called _______ in each ventricle
Choroid plexus
The right and left cerebral hemispheres are connected to each other by a thick C-shaped bundle called the ------
Corpus callosum
As a nurse in a genetic ward, you notice a patient who is unable to close her eyes, even during sleep. She also complains about dry mouth and loss of taste. You immediately suspect damage to cranial nerve.
VII
THe brain has four chambers called the ________ filled with ______fluid
Ventricles, Cerebrospinal
The neuroglia responsible for the blood-brain barrier are the
astrocytes
which of the following senses is/ are initially detected by modified epithial cells rather then neurons
audition, dynamic equilibrium, static equilibrium
A person would look cross-eyed if_________ muscles contracted at once
both medial rectus
Nissl bodies are located in a neuron's ________ and functions in ______
cell body; Protein synthesis
Neural circuits called__________ in the spinal cord produce the rhythmic muscular contractions of walking
central pattern generators
folia are characteristic features of the
cerebellum
the basal nuclei are part of the ______ and have ____ functions
cerebrum; motor
The diestal tapering end of the spinal cord is called the
conus medullaris
the hair root plexus and tactile corpuscles are examples of
cutaneous mechanoreceptors, general senses, simple receptors
The crossing of nerve fiber or tract from the right side of the CNS to the left or vice versa is called?
decussation
Neurons receive incoming signals by way of specialized processes called
dendrites
A lateral extension of the pia mater that helps anchor the spinal cord is the
denticulate ligament
spinal nerves T2 - T12
do not contribute to any plexus
Neurons arise form embryonic
ectoderm
The outermost connective tissue wrapping on a nerve is called the
epineurium
The glial cells that destroy microorganisms in the cns are
microglia
All of the nervous system except the brain and spinal cord is called the
peripheral nervous system
All of the nervous system except the brain and spinal cord is called the________
peripheral nervous system
All of the following are part of the diencephalon except the
pituitary gland
The patient's symptoms (Q.8) could be explained by a stroke in the
pons
The __________ ganglion contains the somas of the neurons that carry sensory signals to the spinal cord
posterior root
the receptor calls for hearing are located in the
spiral organ of corti
The _____ is a tiny bone that vibrates in the oval window and thereby transfers sound vibrations to the inner ear
stapes
Neurotransmitters are found in the
synaptic knob
The apical microvilli of a gustatory cell are called
taste hairs
The cerebrum is separated from the cerebellum by the
tentorium cerebelli
below L2, the vertebral canal is occupied by a bundle of spinal nerve root called______
the cauda equina
The dilated blood vessels seen in bloodshot eyes are vessels of
the conjunctiva
The central sulcus separates the
the parietal lobe from the frontal
the ear is somewhat protected form loud noise by
the stapedius
Neurotransmitters are found in
the synaptic knob
Nerves that directly control the motility of the stomach or rate of the heart beat would belong to
the visceral motor division
nerves that directly control the motility of the stomach or rate of the heartbeat would belong to
the viseral motor divison
The pyramids of the medulla oblongata contain
A descending corticospinal fiber
Name the regional of the spinal cord
Cervical, thoracic, lumbar, sacral
True or False? The somatic nervous system includes motor neurons form the CNS to smooth muscle of the digestive tract?
False
Which of the following is not properly matched?
Perilymph; cochlear duct
Distal to the inter-vertebral foramen, a spinal nerve branches into a posterior and anterior
Rami
In the spinal cord, the somas of the lower motor neurons are found in
The anterior horns
Which of these is caudal to the hypothalamus
The cerebral aqueduct
True or False? On the basis of function, ,neurons are either sensory, motor, or interneurons
True
True or False? The Nervous system is most important in the integration of all body activites
True
True or False? The PNS consists of somatic, autonomic, and enteric divisions
True
True or false? There are 12 pairs of crainial nerves and 31 pairs of spinal nerves
True
The vestibulospinal tract
a descending tract, white matter, entirely within the CNS
Damage to the ______ nerve could result in defects of eye movement
abducens
All of the following except the ________ nerve begin or end in the orbit
accessory
between the dura mater and vertebral bone, one is most likely to find
adipose tissue
Neurons that convey information to the cns are called sensory or ___________ neurons
afferent
neurons that convey information in the CNS are called sensory or _______ neurons
afferent
constriction of the Ciliary body
alters lens thickness
Where can endolymph be located
ampulla, semicircular duct, cochlear duct, saccule
the term "term fiber" usually refers to ______
an axon and its myelin sheath
a spinal motor neuron cell body supplying a skeletal muscle is located in the_______
anterior gray horn
In a sagittal section, the cerebellar white matter exhibits a branching pattern called the _______
arbor vitae
The glial cells that guide migrating neurons in the developing fetal brain are
astrocytes
based on their location, the receptors for sight and sound are classified as
exteroceptors
The most finely detailed vision occurs when an image falls on a pit in the retina called the ______?
fovea centralis
In the peripheral nervous system the somas of the neurons are concentrated in enlarged, knot like structures called_________ connected to the nerves
ganglia
In the peripheral nervous system, the somas of the neurons are concentrated in enlarged knotlike structures called ________ connected to the nerves
ganglia
Fibers of the optic nerve come from the ______ cells of the retina
ganglion
After passing though the vitreous humor, which of the following correctly sequences the path of light through the posterior structures of the eye?
ganglion cells; rods; pigmented epithelium; choroid
outside the CNS, the somas of neurons are clustered in swellings called
gnaglia
the ________ is the region of the CNS that regulates the ANS
hypothalamus
The _____ of the midbrain receive auditory input and trigger the head-turning auditory reflex.
inferior collliculi
The integrative functions of the nervous system are performed mainly by
interneurons
the integrative functions of the nervous system are performed mainly by
interneurons
functionally most neurons are _____ while structurally most neurons are_______
interneurons; multipolar
based on the type of stimulus detected, pacinian corpuscles are classified as
mechanoreceptors
The glial cells that destroy micoroganisms in the CNS are
microglia
Another nae for the axon of a neuron is
nerve fiber
Another name for the axon of neuron is
nerve fiber
Which of the following is not a special sense
nociception
A sensory nerve ending specialized to detect tissue injury and produce a sensation of pain is called a/an
nocieptor
In the central nervous system , cells called _______ perform one of the same functions that schwann cells do in the peripheral nervous system
oligodendrocytes
In the central nervous system, cells called _____ perform one of the same functions that schwann cells do in the peripheral nervous system
oligodendrocytes
Myelin sheaths formed by _______ in the spinal cord are responsible for the characteristic appearance of ________ matter
oligodendrocytes: white
Neuroglia
outnumber neurons and from the bullk of the spinal cord & can multiply and divide
which of the following correctly sequences the path of vibration through the ear?
tympanic membrane, malleus, incus, stapes, oval window
Endolymph is located in all the following except
vestibule
Properly Matched
vitreous humor; posterior cavity ampulla; semicircular duct macula; saccula utricle; vestiblue