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Chapter 13: Peripheral Nervous System
Terms in this set (58)
We can touch our finger to our nose while our eyes are closed in part because we can sense the position and movement of our joints as well as the length of stretch in our muscles. These sensations create awareness of our body's positioning. The following receptors are most likely responsible for this ability.
What type of receptor would be tactile in epithelial tissue?
Blue ball boi with 5 branches
Supplies the posterior body trunk
What type of receptor would be in dermal papillae
Purple boi with yellow coils inside, white background
The phrenic nerve branches from this plexus
Damage to this nerve would cause difficulty in speech and swallowing, but no effect on visceral organs
Tests both upper and lower motor pathways. The sole of the foot is stimulated with a dull instrument.
Integration center for the reflex arc
After axonal injury, regeneration in peripheral nerves is guided by _________
Match the cranial nerve to the correct type
Hypoglossal - Motor
Vagus - Both
Glossopharyngeal - Both
Oculomotor - Motor
Olfactory - Sensory
Vestibulocochlear - Sensory
Accessory - Motor
Abducens - Motor
Trigeminal - Both
Facial - Both
Optic - Sensory
Injury to cervical vertebrae C3-C4 is particularly problematic because __________
The phrenic nerve that serves the diaphragm receives its fibers from here
Involved in movement of the digestive tract
What type of receptor would be around tendons?
Yellow wirey bois attached to what looks like muscle fiber
The cranial nerve that emerges from the Pons and serves the motor and proprioceptive functions of the eyeball is the ___________
Purely sensory; Transmit visual impulses from the retina to the thalamus
Bill is a mechanic that works with vibrating tools. He also exerts force on his wrists when twisting wrenches and screws. Bill has a tingling sensation in the lateral portion of his hand. The doctor suspects carpal tunnel syndrome. Which of the following tests might the doctor try on her patient?
Have Bill grip an object with his thumb and index finger and try to pull the object away
A patient is suffering from the inability to distinguish various types of odors. This patient may have damage to which of the following?
Olfactory nerve (I)
A bit of dust blows into and touches the cornea of the eye. Which of the following is likely to happen?
Stimulation of the ophthalmic division of the trigeminal nerve (V) will cause blinking
Motor neuron for the reflex arc
Mixed nerves, primarily motor, main general sensory nerves of the face
Mixed nerves; Carry sensory impulses from the taste buds of anterior two-thirfs of the tongue
The obturator and femoral nerves branch from this plexus
Striking the funny bone (ulnar nerve) may cause injury to a nerve of this plexus
Produces a rapid withdrawal of the body part from a painful stimulus; ipsilateral
Primarily motor; carry motor and proprioceptor impulses to and from the eyeballs
Starting at the spinal cord, the subdivisions of the brachial plexus are (in order)
As a cook chops red onions he begins to tear up due to activation of the lacrimal gland. Which of the following nerves provided the stimulus
The facial nerve (VII)
Damage to this nerve would cause dizziness, nausea, and loss of balance
Complicated interlacing of the ventral rami form networks called nerve plexus. The crisscrossing of the nerve fibers from the various spinal nerves is advantageous because ________
Injury to any single spinal nerve will be less damaging as there is less chance of total loss of innervation to any particular organ
Mixed cranial nerves containing both motor and sensory fibers include all EXCEPT which of the following?
A major nerve of the lumbar plexus is __________
Sensory neuron for the reflex arc
Damage to this nerve would keep the eye from rotating inferolaterally
A fall or improper administration of an injection to the buttocks may injure a nerve of this plexus
Supplies each muscle with fibers from more than one nerve
Longest cranial nerve
The posterior side of the thigh, leg, and foot is served by the ____________ nerve
What type of receptor would be free nerve ending?
Pink background with branching yellow vessel bois
If someone spills very hot coffee (200*F) on their skin, they will likely perceive much pain. Which of the following receptor types is causing this sensation?
Supplies all of the body except the posterior
What type of receptor would attach to hair?
Hair follicle lookin one
Consists of an ipsilateral withdrawal reflex and a contralateral extensor reflex; important in maintaining balance
A patient has lost the ability to taste food. Which nerve may have been damaged?
The facial nerves
Nerves that carry impulses toward the CNS oly are
An emergency medical technician is examining a trauma victim by shining a pen light into her patients eye. She records the reactivity of the patients pupils as they constrict when stimulated by the light. This test supports which of the following?
The patient has function of the oculomotor nerve (III)
Innervates the superior oblique muscle
Prevents muscle overstretching and maintains muscle tone
Spinal nerves exiting the cord from the level of L4 to S4 form the _________
A doctor asks her patient to follow the motion of her finger as she moves it up and down, left and right. Which of the following cranial nerves is NOT being tested?
The vestibulocochlear nerve (VIII)
Mixed nerves; transmit sensory impulses from the taste buds of the posterior tongue
A person has gone for an appointment to receive a deep-tissue therapeutic massage. Which of the following receptors would be stimulated by the massage?
Produces muscle relaxation and lengthening in response to tension; the contracting muscle relaxes as it's antagonist is activated
The sciatic nerve is a combination of which two nerves?
On fibular and tibial
Which of the following is the best explanation of how a stimulus's strength is transmitted to the central nervous system from sensory nerves?
Action potential frequency is increased as stimulus strength increases
Dermatome maps are useful to clinicians because __________
They can help pinpoint the location of spinal injury
Receptor for the reflex arc
All but T2-T12 branch and form nerve plexuses
What type of receptor would be around muscle fibers?
Yellow bois coiled around striated muscle fibers
Other sets by this creator
Chapter 15: Special Senses
Chapter 14: Autonomic Nervous System
Chapter 12: CNS
Chapter 11: Nervous Tissue