Lab 2 exam content - nervy

Question 1

What are the three main steps in somatosensory control of a skeletal muscle?

Answer 1

sensory perception, central processing in the CNs and motor response.

Question 2

What conveys sensory information in regards to fine touch?

Answer 2

ascending dorsal column

Question 3

what conducts impulses to the cranial nerves for the head and neck? and where does it originate from?

Answer 3

The corticobulbar tract which originates from the cerebral cortex.

Question 4

What originates in the cerebral cortex but attaches to lower motor neurons and units?

Answer 4

the corticospinal tract.

Question 5

what is it called when corticospinal tracts cross over?

Answer 5

decussation

Question 6

Reflex tests + body response + nerves + muscles being tested

Patellar
Achilles
Biceps
Triceps

Answer 6

• an extension of the leg, L2 + L4, Quads
• plantar flexion, S1 + S2, Gastrocnemius
• Forearm + bicep flex, C5 + C6, Biceps
• Extension + contraction of bicep, C7 + C8, Triceps

Question 7

What are the 5 essential components of a reflex arc?

Answer 7

Sensory receptor
Sensory neuron cns afferent
Synapse cns
Motor neuron cns
Target organ effector organ

Question 8

Cranial nerve + type: Trigmeial 5

Answer 8

motor

Question 9

Cranial nerve + type: Accessory 11

Answer 9

motor

Question 10

Cranial nerve + type: hypoglossal 12

Answer 10

motor

Question 11

Cranial nerve + type: facial 7

Answer 11

motor

Question 12

Cranial nerve + type: glossopharyngeal 10

Answer 12

mixed

Question 13

Cranial nerve + type: vestibulocochlear 8

Answer 13

mixed