Blood and nervous supply

Question 1

Do blood vessels cross the flexor or extensor aspects of the forelimb? Why?

Answer 1

Flexor

Prevent stretching vessels

Question 2

What is the main arterial supply to the forelimb?

Answer 2

Subclavian artery
Axillary artery
Brachial artery

Question 3

What 3 arteries does the brachial artery branch into?

Answer 3

Median artery
Radial artery
Superficial brachial artery

Question 4

What are the 4 blood vessels per digit? Which is most important?

Answer 4

Palmar most important
Dorsal
Axial
Abaxial

Question 5

What is the main superificial vein to the forelimb? What does it drain into?

Answer 5

Cephalic vein

Into jugular, then vena cava

Question 6

What nerve runs alongside the cephalic vein?

Answer 6

Radial nerve

Question 7

Afferent nerve fibres carry nervous supply from where to where? Are they sensory or motor fibres?

Answer 7

Body structure to brain

Sensory

Question 8

Efferent nerve fibres carry nervous supply from where to where? Are they sensory or motor fibres?

Answer 8

Brain to body structure

Motor

Question 9

What are mixed nerves? Give an example

Answer 9

Both motor and sensory fibres
Transmit messages in both directions
Spinal reflexes

Question 10

What nerves form the brachial plexus?

Answer 10

Ventral branches of C6-T2 (C6,7,8,T1,2)

Question 11

The brachial plexus supplies all muscles of the forelimb. Which 3 are the exception?

Answer 11

Brachiocephalicus
Trapezius
Rhomboideus

Question 12

The suprascapular and sub scapular nerve arise from which nerves from the brachial plexus?

Answer 12

C6 and C7

Question 13

Which nerve does the musculocutaenous arise from?

Answer 13

C7

Question 14

Which nerves does the axillary arise from?

Answer 14

C6, C7, C8

Question 15

Which nerves does the radial nerve arise from?

Answer 15

C7, C8, T1, T2

Question 16

Which nerves does the median and ulnar nerve arise from?

Answer 16

C8, T1, T2