Thoracic Limb Innervation

Question 1

Motor innervation (target organ; nerve type)

Answer 1

Skeletal; Ventral branch of spinal nerve (motor nerves)

Question 2

Sensory innervation (target organ; nerve type)

Answer 2

Skin; dorsal branches of spinal nerve (cutaneous branch)

Question 3

ANS Innervation (target organs; nerve type)

Answer 3

Smooth muscle and glands; sympathetic portion of ANS nerves that join spinal nerves

Question 4

Location of Brachial Plexus

Answer 4

C6-T2

Question 5

Brachial Plexus gives origin to the nerves that innervate…

Answer 5

1) muscles, bones, and skin of thoracic limb
2) parts of shoulder muscle
3) lateral wall of the thorax/abdomen
4) diaphragm/phrenic nerve

Question 6

What is the brachial plexus

Answer 6

Network of ventral branches of C6-C8 and T1 and T2

Question 7

Nerve 1 of brachial plexus

Answer 7

Suprascapular

Question 8

Nerve 2 of brachial plexus

Answer 8

Subscapular

Question 9

Nerve 3 of brachial plexus

Answer 9

Axillary

Question 10

Nerve 4 of brachial plexus

Answer 10

Musculocutaneous

Question 11

Nerve 5 of brachial plexus

Answer 11

Radial

Question 12

Nerve 6 of brachial plexus

Answer 12

Median

Question 13

Nerve 7 of brachial plexus

Answer 13

Ulnar

Question 14

Origin of Suprascapular nerve

Answer 14

C6 & C7

Question 15

Subscapular nerve innervates

Answer 15

Supraspinatus m. & Infraspinatus m.

Question 16

Injury of Suprascaupular nerve leads to

Answer 16

Muscle atrophy