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Anatomy > Nerve supply to the neck, thoracic wall, and abdominal wall > Flashcards

Nerve supply to the neck, thoracic wall, and abdominal wall Flashcards

1
Q

How many cervical spinal nerves are there?

A

8

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2
Q

Where do the cervical spinal nerves exit the spinal canal?

A

the intervertebral foramen

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3
Q

What happens when the cervical spinal nerves exit the through the intervertebral foramen?

A

they split into dorsal and ventral branches

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4
Q

What does the small dorsal branch of the cervical spinal nerves supply?

A

the epaxial muscles

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5
Q

What does the large ventral branch of the cervical spinal nerve supply?

A

the hypaxial muscles of the neck region

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6
Q

Where are the sensory ganglia for the cervical spinal nerves located?

A

within the intervertebral foramen

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7
Q

True or False: the dorsal and ventral branches have proximal and distal branches

A

False: they have lateral and medial branches

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8
Q

What do the lateral branches of the dorsal and medial branches supply?

A

the skin

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9
Q

Where does the first cervical spinal nerve exit?

A

through the lateral vertebral foramen of C1

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10
Q

Where does the second cervical spinal nerve exit?

A

caudal to C1 vertebra through the intervertebral foramen between C1 and C2

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11
Q

What is the cranial branch of the second cervical spinal nerve called

A

the great auricular nerve

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12
Q

What does the great auricular nerve supply?

A

the skin on the caudal aspect of the ear and base of the neck

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13
Q

After exiting the spinal cord, where do the C3-C5 CSN course?

A

between the two parts of the brachiocephalicus muscle

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14
Q

What do the ventral branches of C5-C8 create?

A

the formation of the phrenic nerve and brachial plexus

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15
Q

What is the phrenic nerve created by?

A

the ventral branches of the C5 and C6 CSN

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16
Q

What is the course of the phrenic nerve?

A

courses on the lateral aspect of the longus colli and crosses the esophagus at the thoracic inlet and passes along the lateral aspect of the base of the heart

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17
Q

What does the phrenic nerve innervate?

A

the diaphragm

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18
Q

What forms the brachial plexus?

A

C6-C8 and T1

19
Q

What does the brachial plexus supply?

A

the extrinsic and intrinsic muscles of the thoracic limb

20
Q

What are nociceptors?

A

touch receptors - tested by the pin prick

21
Q

What are proprioceptors?

A

receptors within muscle spindles– golgi tendon

22
Q

What do the thoracic spinal nerves supply?

A

the thoracic wall, floor, and the thoracic segment of the vertebral column, floor of the abdomen, mammary glands, and cranial most part of the flank

23
Q

How many thoracic spinal nerves are there?

A

13

24
Q

Where does the 1st thoracic nerve exit the the spinal cord?

A

it exits from the intervertebral foramen in between T1 and T2

25
Q

After leaving the intervertebral foramen, what do the thoracic spinal nerves do?

A

they branch into dorsal, lateral, and ventral branches

26
Q

What does the the dorsal branch of the thoracic spinal nerves supply?

A

the epaxial muscles of the thoracic region

27
Q

What does the ventral branch of the thoracic spinal nerve supply?

A

the intercostal muscles

28
Q

What does the lateral branch of the thoracic spinal nerve supply?

A

the skin and the extrinsic muscles of the thoracic limb that arise from the lateral wall of the thorax

29
Q

What do the lumbar spinal nerves supply?

A

the wall of the abdomen

30
Q

How many lumbar spinal nerves are there?

A

4

31
Q

What do the lumbar spinal nerves do when they exit the intervertebral foramen?

A

they spit into a dorsal, ventral, medial, and lateral branch

32
Q

What is the name of the first lumbar spinal nerve?

A

cranial iliohypogastric

33
Q

What is the name of the second lumbar spinal nerve?

A

caudal iliohypogastric

34
Q

What is the name of the third lumbar spinal nerve?

A

iliolingual

35
Q

What is the name of the fourth lumbar spinal nerve?

A

lateral cutaneous femoral nerve

36
Q

What do the lateral branches of the lumbar spinal nerves supply?

A

the flank

37
Q

Where are the medial branches of the lumbar spinal nerves seen?

A

between the internal oblique

38
Q

What forms the genitofemoral nerve?

A

the third and fourth spinal nerves

39
Q

What does the genitofemoral nerve pass through?

A

the inguinal canal

40
Q

What does the genitofemoral nerve supply?

A

the sensory innervation to the contents of the inguinal canal, spermatic cord, skin around the superficial inguinal ring, and skin overlying the upper half of 1/3 of the medial aspect of the thigh region.

41
Q

How do you test if the genitofemoral nerve is functional?

A

use the pinprick test on the autonomous zone

42
Q

What creates the lumbar plexus?

A

L2-L4

43
Q

What creates the lumbosacral plexus

A

L4-S1

44
Q

What creates the sacral plexus?

A

S1 to S2

Anatomy (27 decks)

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