The ʺknee jerkʺ reflex is an example of a(n) ________. |
D) stretch reflex |
The ________ nerve is not a branch of the trigeminal nerve. |
C) cervical |
Which of the following nerves does not arise from the brachial plexus? |
B) phrenic |
Which of the following is at the lowest level of the CNS? |
D) CPG |
The three primary levels of neural integration in a sensory system include all of the following except the ________. |
D) effector level |
The posterior side of the thigh, leg, and foot is served by the ________ nerve. |
C) tibial |
Starting at the spinal cord, the subdivisions of the brachial plexus are, in order ________. |
A) rami, trunks, divisions, and cords |
The cranial nerve with a dual origin (brain and spinal cord) is the ________. |
B) accessory |
Which of the following is not a nerve plexus? |
D) thoracic |
A major nerve of the lumbar plexus is the ________. |
A) femoral |
Spinal nerves exiting the cord from the level of L4 to S4 form the ________. |
C) sacral plexus |
The abducens nerve ________. |
A) supplies innervation to the lateral rectus muscle of the eye |
Basic reflexes ________. |
B) may be modified by learned behavior |
Which of the following is not true about the integration center of a reflex arc? |
B) There are always multiple synapses with chains of interneurons. |
Striking the ʺfunny boneʺ is actually stimulation of the ________. |
C) ulnar nerve |
Which of the following numbers of pairs of spinal nerves is correct? |
B) twelve thoracic |
Select the statement about plexuses that is most correct ________. |
B) Only ventral rami form plexuses |
A reflex that causes muscle relaxation and lengthening in response to muscle contraction is called a ________. |
A) Golgi tendon reflex |
Pressure, pain, and temperature receptors are ________. |
B) exteroceptors |
Potentially damaging stimuli that result in pain are selectively detected by ________. |
C) nociceptors |
Meissnerʹs corpuscles ________. |
D) are mechanoreceptors |
Which receptors adapt most slowly? |
C) nociceptors |
The abducens nerve conveys proprioceptor impulses from the ________ to the brain. |
B) lateral rectus muscle |
Nerves that carry impulses toward the CNS only are ________. |
A) afferent nerves |
After axonal injury, regeneration in peripheral nerves is guided by ________. |
B) Schwann cells |
Regeneration within the CNS ________. |
C) is complicated by secondary demyelination |
In a crossed extensor reflex, if the right arm were grabbed it would flex and the left arm would ________. |
B) extend |
Select the correct definition. |
C) Pattern recognition allows us to see a familiar face. |
All processing at the circuit level going up to the perceptual level must synapse in the ________. |
B) thalamus |
The sciatic nerve is a combination of which two nerves? |
D) common fibular and tibial |
The largest and longest nerve of the body is found in the ________. |
D) sacral plexus |
Irritation of a major nerve of this plexus may cause hiccups. |
A) cervical plexus |
Bellʹs palsy ________. |
D) is characterized by paralysis of facial muscles |
Babinskiʹs sign is ________. |
C) when the great toe dorsiflexes and the other toes fan laterally |
A simple spinal reflex goes along which of the following reflex arcs? |
B) receptor, afferent neuron, integration center, efferent neuron, effector |
Mixed cranial nerves containing both motor and sensory fibers include all except which of the following? |
B) vestibulocochlear |
Transduction refers to conversion of ________. |
B) stimulus information to nerve impulses |
________ always takes a nonspecific ascending pathway. |
A) Touch |
The flexor muscles in the anterior arm (biceps brachii and brachialis) are innervated by what nerve? |
D) musculocutaneous |
The cranial nerves that have neural connections with the tongue include all except the ________. |
D) trochlear |
Problems in balance may follow trauma to which nerve? |
B) vestibulocochlear |
A fracture of the ethmoid bone would result in damage to which cranial nerve? |
C) olfactory |
Select the statement that is most correct. |
B) Afferent nerve fibers contain cell bodies of sensory neurons. |
An improperly delivered gluteal injection could result in ________. |
D) sciatica |
Which nerve does not use the jugular foramen as a route of exit from the skull? |
A) trigeminal |
The peripheral nervous system includes ________. |
A) sensory receptors |
Feeling a gentle caress on your arm would likely involve all of the following except ________. |
C) Pacinian corpuscles |
A patient who received a blow to the side of the skull exhibits the following signs and symptoms on that side of the face: he is unable to close his eye, and the corner of his mouth droops. Which cranial nerve has been damaged? |
A) facial |
The circuit level of the somatosensory system involves CNS centers in all of the following except the ________. |
D) cerebral cortex |
The projection level of the brain does not include the ________. |
A) basal nuclei |
If the ventral root of a spinal nerve were cut, what would be the result in the tissue or region that nerve supplies? |
B) a complete loss of voluntary movement |
anatomy 13
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