Nervous System: Spinal Cord and Peripheral Nerves Chapter 11
Terms in this set (73)
carries information for touch, pressure, and pain
electrical signal arises in the precentral gyrus of the frontal lobe
carries information to the parietal lobe
most neurons decussate in the medulla oblongata
I feel pain in my little finger
I'm wiggling my toes
I'm hearing voices
a protective reflex; quickly moves your finger away form a hot object
patellar tendon reflex
this reflex helps you maintain a standing posture; also called the knee-jerk reflex
this reflex helps your body maintain a normal blood pressure
this reflex is elicited by stroking the sole of the foot; plantar flexion and curling of the toes are normal responses in an adult
this reflex causes the pupils of the eyes to constrict (become smaller) in response to light
Achilles tendon reflex
a stretch reflex; tapping this tendon in the heel normally causes plantar flexion of the foot; also called the ankle-jerk reflex
this reflex involves the glossopharyngeal nerve and helps prevent food and water from going down the wrong way
senses hearing and balance
the wanderer; widely distributed throughout thoracic and abdominal cavities
helps control the movements of the tongue; cranial nerve XII
allows you to shrug your shoulders
damage to this nerve causes blindness
sense of smell
tic douloureux, a condition characterized by extreme facial and jaw pain, is caused by inflammation of this nerve; triggers include eating, shaving, and exposure to cold temperatures
a dilated and fixed pupil is caused by pressure on this nerve
inflammation of this nerve causes Bell's palsy, a paralysis of one side of the face
nerve that supplies most of the extrinsic eye muscles, primary function is the movement of the eyeballs
carries sensory information from the eyes to the occipital lobe of the brain
in addition to mobbing the eyeball, this nerve raises the eyelid and constricts the pupil of the eye
cranial nerve VIII
ptosis of the lids
cranial nerve II
cant smile, wrinkle foehead, secrete tears, or close eyes (on the affected side)
cranial nerve X
wrist drop is caused by damage to this nerve
crutch palsy is caused by damage to this nerve
nerve that supplies the diaphragm, an important breathing muscle
spinal nerves are grouped and sorted here
this large nerve leaves or emerges from the distal end of the spinal cord and supplies the buttocks and posterior thighs
nerve groupings that are described as cervical, brachial, and lumbosarcral nerves
deadening of this nerve assists in childbirth
group of nerves that emerge from the distal end of the spinal cord; horse's tail
innervates the inner thigh area
if damaged, causes footdrop
must administer an intramuscular (IM) injection in the upper outer quadrant of the buttocks to avoid jumping this nerve
severing this nerve requires the use of a ventilator
What is most descriptive of a descendign tract?
What is most likely to experience ototoxicity?
a person who took an antibiotic drug that injured CN VIII
The pyramidal tract is
the major motor tract that originates in the precentral gyrus
A student nurse is instructed to administer an IM in injection in the upper outer quadrant of the buttocks to
avoid injury to the sciatic nerve
What is a function of the spinal cord?
acts as an important reflex center
What is the purpose of myelination?
increases the speed of the nerve impulse
What is least descriptive of a the vagus nerve?
an inflamed vagus nerve causes Bell's palsy
What is most descriptive of the cauda equina?
spinal nerves that emerge from the tail end of the spinal cord
Diagnostically, a needle is inserted between the third and fourth lumbar vertebreae into the subarachnoid space to
obtain a sample of cerebrospinal fluid
These nerves supply voluntary skeletal muscles, causing movement
somatic motor nerves
A mixed nerve is one that
contains both sensory and motor fibers
What involuntary response to a stimulus is accomplished by these four structures - receptor, sensory neuron,motor neuron,effector organ?
What is the effect organ in the knee - jerk or patellar tendon reflex?
quadriceps femoris muscle
What is least descriptive of the oculomotor nerve?
carries sensory information from the eye to the occipital lobe (vision)
What is a consequence of damage to the glossopharyngeal nerve?
loss of the gag reflex and aspiration fo food
The phrenic nerve
innervates the major breathing muscle
The first three cranial nerves
are the olfactory, optic, and oculomotor nerves
Who likes to have the sole of his foot stroked?
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