Homunculus

Question 0

Homunculus motor

Answer 0

Reach region of the primary motor cortex (precentral gyrus)
Provides to all respective body parts
Via efferent, or outgoing tracts

Question 1

Motor homunculus

Answer 1

Anatomical representation of the degree of innervation

Question 2

Homunculus distorted image

Answer 2

Innervation of different muscles in different body parts. Varies

Question 3

Homunculus more or fewer tracts

Answer 3

Coming down from primary motor Cortex, through brainstem and spinal cord to the body

Question 4

Sensory homunculus

Answer 4

Anatomical representation of the degree of sensory input

That each region of the body provides to the primary sensory strip (post central gyrus)

Question 5

Sensory homunculus

Answer 5

Via afferent or incoming tracts and it’s a distorted image of sensory feedback form different muscles in different body parts, varies

Question 6

There are direct and indirect motor pathways from the cns to spinal nerves

Answer 6

True

Question 7

Direct pathways for motor control

Answer 7

Corticospinal and corticobulbar 
Key ideas:
Voluntary, skilled movements 
Deliberate, controlled movements 
Of skeletal muscle
Do such  and such movements

Question 8

Look at slide 18

Answer 8

Now

Question 9

Paired spinal nerves

Answer 9

They occur at each vertebral interval

Emerging from the spinal cord, one on each side of the body

Question 10

31 pairs of spinal nerves

Answer 10

Posterior Incoming sensory
Anterior Outgoing motor
Where anterior rootlets meet up with posterior rootlets you gave a spinal nerve that is mixed

Question 11

Cervical pair

Answer 11

Eight

Question 12

Thoracic pair

Answer 12

12

Question 13

Lumbar pairs

Answer 13

5

Question 14

Sacral pairs

Answer 14

5

Question 15

Coccygeal pairs

Answer 15

1