Quiz 3 Motor

Question 1

Which detects rotational forces for each vector

Answer 1

Crista ampullaris

Question 2

What maintain balance and push body away from threat

Answer 2

Crossed extensor reflex

Question 3

What equalizes contractile forces among separate muscle fibers

Answer 3

Tendon reflex

Question 4

What dampen or smooth skeletal muscle contractions

Answer 4

Stretch reflex

Question 5

What remove limb from painful stimulus

Answer 5

Flexor reflex

Question 6

Which nerve ending has the function of motor innervation of nuclear bag intramuscular muscle fibers

Answer 6

Dynamic gamma motor (plate) ending

Question 7

Which nerve ending has the function motor innervation of nuclear chain intramural muscle fibers

Answer 7

Static gamma motor (trail)

Question 8

Which nerve ending has the function sensory innervation from either end or both ends of the intramural muscle fibers

Answer 8

Secondary afferent ending

Question 9

Which nerve ending has the function Motor innervation of extrafusal muscle fibers

Answer 9

Alpha motor ending

Question 10

Which nerve ending has the function Sensory innervation from the central portion of the nuclear bag and nuclear chain

Answer 10

Primary afferent ending

Question 11

Which sends fibers through the corpus callosum to coordinate bilateral activities and body wide attitude

Answer 11

Supplementary motor area

Question 12

Which have cell bodies in the anterior horn and send axons out to extrafusal muscle fibers to cause the skeletal muscle to contract

Answer 12

Alpha motor neurons

Question 13

Which carries motor fibers to inner ate muscles of facial expression

Answer 13

Corticobulbar tract

Question 14

True or false
Wernicke’s area is located in the frontal lobe

Answer 14

False

Question 15

True or false
Fibers of the ventral corticospinal tract decussate in the medullary pyramids

Answer 15

False

Question 16

True or false
The corticospinal tract carries fibers of giant betz cells that originate in layer VI of the primary motor cortex

Answer 16

False

Question 17

True or false
The tectospinal tract originates in the midbrain

Answer 17

True

Question 18

What are the functions of the gamma motor system

Answer 18

• dampen movements of body parts when walking
• brace or stabilize a joint for tense action
• coactivate alpha and gamma motor neurons
• prevent oscillations or jerky muscle contractions

Question 19

What nucleus relieves information from the macula of the utricle and the macula of the saccule and relays it down the spinal cord to innervate postural muscles to maintain balance

Answer 19

Lateral vestibular nucleus