nerves

Question 1

what are the spinal nerve roots of the lumbosacral plexus

Answer 1

L1-S4

Question 2

what are the spinal nerve roots of the brachial plexus

Answer 2

C5-T1

Question 3

what is a aponeurosis

Answer 3

flat tendon

Question 4

name the 4 abdominal muscles

Answer 4

rectus abdominis
transversus abdominus
internal oblique
external oblique

Question 5

how are trunk muscles innervated

Answer 5

segmentally from non-plexus nerves

Question 6

how many intercostal nerves are there

Answer 6

12 for each rib, the bottom 6, T7-T12 also supply the anterior abdominal wall

Question 7

T4 innervates

Answer 7

the nipples

Question 8

T6 innervates

Answer 8

the xiphoid process

Question 9

T8 innervates

Answer 9

the costal margin

Question 10

T10 innervates

Answer 10

the umbilicus

Question 11

T12 innervates

Answer 11

the anterior superior iliac spine

Question 12

difference between a dermatome and a cutaneous innervation

Answer 12

cutaneous is a general, overlapping and mixed innervation of an area. a dermatome is 1 horizontal strip innervated by 1 spinal nerve.

Question 13

what does the ventral ramus supply?

Answer 13

supplies the skin, muscles and bones of the anterolateral sides of the trunk as well as the entire upper and lower limbs, It carries both motor and sensory

Question 14

the dorsal ramus supplies?

Answer 14

the posterior side of the trunk carrying both motor and sensory nerves

Question 15

the dorsal root carriers

Answer 15

only sensory afferent fibres

Question 16

the ventral root carries

Answer 16

only motor efferent fibres

Question 17

the grey ramus travel towards the

Answer 17

sympathetic ganglion

Question 18

the white ramus travels away from

Answer 18

the sympathetic ganglion

Question 19

splanchnic nerves are

Answer 19

sympathetic nerves that don’t synapse in the sympathetic chain instead travel to abdominal sympathetic ganglia

Question 20

where do the thoracic splanchnic nerves emerge from

Answer 20

T6-T12