Lecture19: Lumbar And Sacral Plexi Flashcards

1
Q

The illioingual and iliihypogastric branches arise from which segment?

A

L1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the branch anterior to the psoas major muscle?

A

Genitofemoral nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the medial branch to the psoas major muscle?

A

Obturator nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the function of both iliohypogastric and ilioingual nerves?

A

Motor supply to the muscles of the anterior abdominal wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the function of the genitofemoral nerve?

A

Sensory supply to external genitals and upper anterior thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the function of the lateral cutaneous nerve of the thigh?

A

Sensory supply to lateral thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of the femoral nerve?

A

Supplies the muscles of the anterior thigh and it’s skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the function of the obturator nerve?

A

Supplies the muscles of the medial thigh and it’s skin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What happens if femoral nerve injury?

A

Weakness in flexion of hip and knee extension

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What happens if obturator nerve injury?

A

Weakness in Adduction of thigh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the origin of the sacral plexus?

A

S1-4 and L4-5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the course of the Lumbosacral trunk ( L4-5 )?

A

Vertically to the pelvic cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the course of S1-4?

A

Through the anterior sacral foramina

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the muscle origin of the sacral plexus?

A

Piriformis muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the 2 terminal branches of the sacral plexus?

A

The sciatic nerve and pedundal nerve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does the sciatic nerve supply?

A

Muscle of the feet, leg and posterior thigh

17
Q

What is the main nerve of the perineum?

A

The pedundal nerve

18
Q

What do both inferior and posterior gluteal nerves supply?

A

The gluteal muscles

19
Q

What does the posterior cutaneous nerve of the thigh supply?

A

Sensory supply to posterior thigh

20
Q

What delivers parasympathetic supply to the pelvis?

A

Pelvic splanchic nerves

21
Q

What delivers to the external anal sphincter?

A

Muscular branches

22
Q

What is injured nerve if a person has drooping feet?

A

Sciatic nerve