Anatomy: Nerves

Question 1

Where do sympathetic nerve fibres leave the spinal cord to innervate the urinary tract

Answer 1

T10 -L2

Question 2

How do sympathetic nerves that innervate the kindey actually reach it

Answer 2

Within abdominopelvic splanchnic nerves

Question 3

Where do the sympathetic nerves synapse

Answer 3

at the abdominal sympathetic ganglia

Question 4

Which cranial nerves are parasympathetic

Answer 4

III, VII, IX, X

Question 5

How do parasympathetic nerves that innervate the kidney and ureter reach them

Answer 5

within the vagus nerve

Question 6

How do parasympatheitc nerve fibre which innervate the bladder reach the bladder

Answer 6

within pelvic splanchnic nerves

Question 7

Where do pelvic splanchnic nerves leave the spinal nerves

Answer 7

S2, S3, S4

Question 8

Which part of the renal system have somatic fibres going to them

Answer 8

those in the perineum (the urethra) ONLY

Question 9

What stimulates contraction of the detrusor muscle

Answer 9

parasympathetic fibres from S2, 3 and 4 pelvic splanchnic nerves

Question 10

What stimulates the interanl urethral sphincter to contract

Answer 10

sympathetic fibres

Question 11

what stimulate the internal urethral spnincter to relax (in males)

Answer 11

parasympathetic fibres

Question 12

What stimulates external urethral sphincter to contract

Answer 12

pudendal nerve (somatic motor) S2, 3, 4

Question 13

What stimulaters the levator ani to contract

Answer 13

the nerve to the levator ani (S3, S4)

Question 14

Where do visceral afferents from the kidneys enter the spinal cord

Answer 14

T11 to L1

Question 15

Where do visceral afferent from the ureters enter the spinal cord

Answer 15

T11 to L2

Question 16

Where do visceral afferent from the part of the bladder touching the peritoneum enter the spinal cord

Answer 16

enter at T11-L2

travel alongside sympathetic fibres

Question 17

Where is pain from the superior surface of the bladder felt

Answer 17

suprapubic

Question 18

Where does the visceral affertents drom the rest of the bladder enters the spinal cord

Answer 18

alongside parasympathetics on the S2, 3, 4

Question 19

where are visceral afferents from the proximal urethra entering the spinal cord

Answer 19

alongside the parasympathetics at S2, 3, 4

Question 20

Where do somatic sensory from the distal urethra entering the spinal cord

Answer 20

pudendal nerve at levels S2, 3, 4

Question 21

Where do visceral afferents from the testes enter the spinal cord

Answer 21

T10-T11

Question 22

Name the nerves of the lumbar plexus and their routes

Answer 22

Iliohypogastric L1
ilioinguinal L1
Lateral cutaneous nerve of the thigh (L2,3)
Genitofemoral (l1, L2)
Femoral (L2-4_
obturator (L2-4)

Question 23

What does the sciatic nerve split into

Answer 23

the tibial and common fibular nerves

Question 24

What forms the sural nerve

Answer 24

the tibial and common fibular nerves

Question 25

where does the sural nerve supply sensation

Answer 25

the lateral aspect of the foot

Question 26

Where does the deep fibular nerve supply sensation

Answer 26

the first web space

Question 27

Where does the tibial nerve supply sensation

Answer 27

plantar surface of the foot

Question 28

what innervate the front the thigh

Answer 28

femoral

Question 29

What innervates the inside of the thigh

Answer 29

obturator

Question 30

lateral thigh

Answer 30

lateral cutaneous nerve of the thigh

Question 31

posterior thich

Answer 31

posterio cutaneous nerve of the thigh

Question 32

front of the leg

Answer 32

saphenous nerve

Question 33

the lateral leg

Answer 33

sciatic

Question 34

the back of the leg

Answer 34

sciatic

Question 35

The lateral foot

Answer 35

sural

Question 36

the dorsal foot

Answer 36

superficial fibular

Question 37

the plantar foot

Answer 37

tibial