Nerves

Question 1

PIN structure

Answer 1

from medial -> lateral

1. Pudendal N.
2. Internal pudendal A.
3. Nerve to the obturator internus m.

Question 2

Lumbosacral trunk

Answer 2

1. Anterior ramus of the 1st sacral spinous n.
2. Anterior ramus of the 2nd sacral spinous n.
3. Anterior ramus of the 3rd sacral spinous n.
4. Anterior ramus of the 4th sacral spinous n.

Question 3

pudendal nerve branches

Answer 3

runs over sacrospinous L.

1. Inferior rectal N.
   Then it will split into:
2. Superficial perineal N.
   - Posterior scrotal n./posterior labial n.
3. Deep perineal N.
   - [isciocavernosus m, bulbospongiosus m, superficial transverse perineal m, deep transverse perineal m]

3 Pudendal N
-[dorsal n. of the penis/ dorsal n. of the clitoris

Question 4

Where is the. inferior hypogastric plexus located

Answer 4

over. the anterior rami

Question 5

Penis shit

Answer 5

Superficial dorsal vein of the penis
-----
Deep dorsal vein of the penis
Dorsal a. of the penis
dorsal n. of the penis

Question 6

Sacral sympathetic trunk and components

Answer 6

1. Sacral splanchnic N -> branches off sympathetic trunk -> inferior hypogastric plexus
2. Pelvic splanchnic N-> branches off anterior rami -> inferior hypogastric plexus
3. Ramus communicans (s)/ rami communicantes -> leave sacral sympathetic trunk -> anterior ramus of sacral spinous n.
4. Ganglion impar-> union of the L/R paravertebral trunk

Question 7

Where is superior gluteal N?

Answer 7

next to obturator internus m and takes a deep dive behind the. greater sciatic notch

Question 8

Genitofemoral N

Answer 8

L1-L2

Peeps through psoas major m.
- Goes down and branches into

genital branch of the genitofemoral n.
Femoral branch of the genitofemoral n.