Nerves of the HL

Question 1

N.Ischiadicus

Answer 1

From the Sacral plexus from the sacral elements of the spinal chord.
Root: L6-S2
Gives off the Caudal cutaneal femoral N.
Continues as the:
N.Tibialis
N.fibularis communis
Innervates:
M.Biceps femoris
M.Semitendinosus
M. Semimembranosus
M. Gemelli
M. Quadratus femoris
M. Gluteus profundus
M. Obturatorius internus

Has 3 branches:

1. N.cutaneus Surealis lateralis
2. N.Peroneus communis
   - N.peroneus superficialis
   - N.peroneus profundus
3. N. Tibialis
   - M.Gastrocnemius
   - SDF
   - DDF
   - M.Popliteus

Question 2

N.Tibialis

EQ

Answer 2

Gives of caudal cutanearl sural N.
Decides into lateral and medial plantar N.
They have a communicating branch in-between them.
- Lateral plantar N. giving of Deep Plantar N
- Medial Plantar N terminating branches:
Dorsal branch of proximal phallanx
Dorsal branch of middle phalanx
Plantar branch of medial digital N.

Question 3

N.Fibularis communis

Answer 3

Decides into superficial and deep fibular nn.

Question 4

N.Pudendus

Answer 4

Root: S1-S2
Innervation of:
Vulva
Penis (joins dorsal n. of penis)

Question 5

PLEXUS SACRALIS

Answer 5

From sacral elements of the spinal Chord

1. L5-S1: M.Gluteus cranial
2. S1-S2: M.Gluteus caudalis
3. S1-S3: M.Cutaneus femoralis lateralis
4. L6-S2: M.Ischiadicus
5. S1-S2: M.Pudendus

INNERVATE:
Caudal M. of the tigh and skin

Question 6

NERVES Branching

Answer 6

1. N. Gluteus cranialis !
2. N. Gluteus caudalis !
3. N.ischiadicus !
   - N.cutaneus surealis lateralis
   - N.Peroneus communis
   a. N.Peroneus superficialis
   b. N.Peroneus profundus
   - N.Tibialis
   a. N.Plantaris lateralis
   b. N.Plantaris medialis
   - N.cutateus surealis caudalis
4. N.Pudendus !
5. N. Cutaneus femoralis caudalis !

Question 7

N.Gluteus cranialis

Answer 7

ROOT: L5-S1
INNERVATION of:
M.Gluteus medius
M.Gluteus profundus
M.Piriformis
M.Tensor Facia latae

Question 8

N.Gluteus Caudalis

Answer 8

ROOT: S1-S2
INNERVATION of:
M.Gluteus superficialis

Question 9

N. Cutaneus surealis lateralis

Answer 9

ROOT: S1-S3
INNERVATION:
Skin of caudal aspect of crus

Question 10

N.Pudendus

Answer 10

ROOT: S1-S2
INNERVATION of:
- Vulva
- Penis (joins dorsal n. of penis)

Question 11

N.Ischiadicus

Answer 11

ROOT: L6-S2
INNERVATION of:
M.Biceps femoris 
M. Semitendinosus
M. Semimembranosus
M. Quadratus femoris
M. Gluteus profundus
M. Gemelli
M. Obturatorius Internus

Branches:

1. N. Cutaneus surealis lateralis
2. N.Peroneus communis
   - N.Peronesus superficialis
   - N. Peroneus profundus
3. N. Tibialis

Innervates:
M. Gastrocneimius
M. SDF
M. DDF
M. Popliteus