Test 4: Nerves, Arteries, Veins

Question 0

Inferior gluteal n.

Course

Answer 0

Greater sciatic foramen (inferior to piriformis) –> branches off

Question 1

Inferior gluteal n.

Origin

Answer 1

Sacral plexus (L5-S2)

Question 2

Inferior gluteal n.

Distribution

Answer 2

Gluteus Maximus

Question 3

Superior gluteal n.

Origin

Answer 3

Sacral plexus (L4-S1)

Question 4

Superior gluteal n.

Course

Answer 4

Greater sciatic foramen (superior to piriformis) –> runs between gluteus medius and minimus

Question 5

Superior gluteal n.

Distribution

Answer 5

Gluteus medius
Gluteus minimus
TFL

Question 6

Posterior femoral cutaneous n.

Origin

Answer 6

Sacral plexus (S1-S3)

Question 7

Posterior femoral cutaneous n.

Course

Answer 7

Greater sciatic foramen (inferior to piriformis) –> under gluteus Maximus –> descends under fascia lata –> branches off

Question 8

Posterior femoral cutaneous n.

Distribution

Answer 8

Skin of buttock, posterior thigh/calf
Lateral perineum
Upper medial thigh

Question 9

Pudendal n.

Origin

Answer 9

Sacral plexus (S2-S4)

Question 10

Pudendal n.

Course

Answer 10

Greater sciatic foramen (inferior to piriformis) –> descends posterior to sacrospinous lig –> enters perineum via lesser sciatic foramen

Question 11

Pudendal n.

Distribution

Answer 11

Perineum

Question 12

N. to obturator internus

Origin

Answer 12

Sacral plexus (L5-S2)

Question 13

N. to obturator internus

Course

Answer 13

Greater sciatic foramen (inferior to piriformis) –> descends posterior to ischial spine –> lesser sciatic foramen –> obturator internus

Question 14

N. to obturator internus

Distribution

Answer 14

Superior gemellus

Obturator internus

Question 15

N. to quadratus femoris

Origin

Answer 15

Sacral plexus (L4-S1)

Question 16

N. to quadratus femoris

Course

Answer 16

Leaves pelvis via Greater sciatic foramen deep to sciatic n.

Question 17

N. to quadratus femoris

Distribution

Answer 17

Hip joint
Inferior gemellus
Quadratus femoris

Question 18

Sciatic n.

Origin

Answer 18

Sacral plexus (L4-S3)

Question 19

Sciatic n.

Course

Answer 19

Greater sciatic foramen (inferior to piriformis) –> gluteal region –> descends deep to biceps femoris –> bifurcated into tibial and common fibular nerves at apex of popliteal fossa

Question 20

Sciatic n.

Distribution

Answer 20

All muscles in posterior compartment of thigh

Question 21

Clunial n.

Origin

Answer 21

Superior: posterior rami L1-L3

Middle: posterior rami S1-S3

Inferior: posterior cutaneous n. of thigh

Question 22

Clunial n.

Course

Answer 22

Superior: crosses iliac crest
Middle: exits through posterior sacral foramina and enters gluteal region
Inferior: curves around inferior border of gluteus Maximus

Question 23

Clunial n.

Distribution

Answer 23

Skin of gluteal region

Question 24

Saphenous n. | Origin

Answer 24

Femoral n.

Question 25

Saphenous n. | Course

Answer 25

With femoral vessels through femoral triangle/adductor canal --> descends with great Saphenous v.

Question 26

Saphenous n. | Distribution

Answer 26

Skin of medial side of leg and foot

Question 27

Tibial n. | Origin

Answer 27

Sciatic n.

Question 28

Tibial n. | Course

Answer 28

Through popliteal fossa --> along tibialis posterior --> terminates at flexor retinaculum (divides into med/lat plantar nerves)

Question 29

Tibial n. | Distribution

Answer 29

Plantar flexor muscles of posterior compartment of leg and knee

Question 30

Common fibular n. | Origin

Answer 30

Sciatic n.

Question 31

Common fibular n. | Course

Answer 31

Follows medial border of biceps femoris/tendon --> posterior head of fibula --> winds around neck of fibula --> divides into deep/superficial fibular nerves

Question 32

Common fibular n. | Distribution

Answer 32

Skin on lateral part of posterior leg | Knee joint

Question 33

Superficial fibular n. | Origin

Answer 33

Common fibular n.

Question 34

Superficial fibular n. | Course

Answer 34

Arises between fibularis longus and neck of fibula --> lateral compartment of leg --> pierces deep fascia

Question 35

Superficial fibular n. | Distribution

Answer 35

Fibular muscles of lateral compartment of leg Skin on distal 1/3 of anterior surface of leg Skin on dorsum of foot

Question 36

Deep fibular n. | Origin

Answer 36

Common fibular n.

Question 37

Deep fibular n. | Course

Answer 37

Arises between fibularis longus and neck of fibula --> extensor digitorum longus --> interosseous membrane --> distal end of tibia --> dorsum of foot

Question 38

Deep fibular n. | Distribution

Answer 38

Dorsiflexor muscles of anterior compartment Extensor muscles on dorsum of foot Skin on 1st interdigital cleft