Unit II Lec 18

Question 1

Posterior abdominal wall is formed at the midline by what

Answer 1

five lumbar vertebrae and associated intervertebral discs

Question 2

Posterior abdominal wall is formed laterally and superiorly by what

Answer 2

12th rib

Question 3

Posterior abdominal wall is formed inferiorly by what

Answer 3

upper part of pelvis and 3-4mx

Question 4

3 muscles line the posterior abdominal wall

Answer 4

psoas major, the iliacus and the quadratus lumborum

Question 5

A loose, areolar connective tissue lines these muscles and the entire internal surface of the abdominal wall

Answer 5

endoabdominal or transversalis fascia

Question 6

endoabdominal or transversalis fascia is continusous with what fascia

Answer 6

endopelvic fascia

Question 7

Lumbar Plexus forms from what rami

Answer 7

anterior primary rami of L1 to L4, sometimes T12

Question 8

Grar rami from what roots communicate with the lumbar plexus

Answer 8

all 5, T12-L4

Question 9

White rami from what roots communicate with lumbar plexus

Answer 9

only 3, T12, L1, L2

Question 10

Lumbar plexus form within what mx

Answer 10

psoas major

Question 11

Psoas major emerges from what borders of the psoas major

Answer 11

lateral, anterior and medial borders

Question 12

Letters of nerves from lumbar plexus from top to bottom

Answer 12

SIIGLFO

Question 13

Nerve from T12

Answer 13

subcostal nerve

Question 14

lumbar nerve to gluteal and hypogastric skin

Answer 14

iliohypogastric nerve (L1)

Question 15

lumbar plexus nerve to skin of groin and scrotum/labia majorum

Answer 15

ilioinguinal nerve (L1

Question 16

internal abdominal oblique mx is innervated by

Answer 16

ilioinguinal nerve (L1

Question 17

transversus abdominis mx is innervated by

Answer 17

ilioinguinal nerve (L1

Question 18

lumbar plexus n to to skin of mons pubis

Answer 18

genitofemoral nerve (L1-L2)

Question 19

lumbar plexus n to labia majorum/scrotum

Answer 19

genitofemoral nerve (L1-L2)

Question 20

lumbar plexus n to skin of the femoral triangle

Answer 20

genitofemoral nerve (L1-L2)

Question 21

cremaster muscle is innervated by what lumbar plexus n

Answer 21

genitofemoral nerve (L1-L2)

Question 22

lumbar plexus n to skin on anterolateral thigh

Answer 22

lateral femoral cutaneous nerve (L2-L3)

Question 23

lumbar plexus n to anterior surface of thigh and medial aspect of leg and foot skin on the medial side of the leg

Answer 23

femoral nerve (L2-L4)

Question 24

what branch of what lumbar plexus n innervates leg and foot

Answer 24

saphenous branch of femoral nerve (L2-L4

Question 25

iliacus m is innervated by what lumbar plexus n

Answer 25

femoral nerve (L2-L4)

Question 26

pectineus m is innervated by what lumbar plexus n

Answer 26

femoral nerve (L2-L4)

Question 27

sartorius m is innervated by what lumbar plexus n

Answer 27

femoral nerve (L2-L4)

Question 28

quadriceps femoris m is innervated by what lumbar plexus n

Answer 28

femoral nerve (L2-L4)

Question 29

articular capsule of hip and knee joints is innervated by what lumbar plexus n

Answer 29

femoral nerve (L2-L4)

Question 30

medial surfaces of thigh and articular capsule to hip and knee joints innervated by what lumbar plexus n

Answer 30

obturator nerve (L2-L4)

Question 31

gracilis m is innervated by what lumbar plexus n

Answer 31

obturator nerve (L2-L4)

Question 32

adductor brevis, longus and magnus m is innervated by what lumbar plexus n

Answer 32

obturator nerve (L2-L4)

Question 33

obturator externus m is innervated by what lumbar plexus n

Answer 33

obturator nerve (L2-L4)

Question 34

branch of obturator n that exists only in 9% of cases

Answer 34

accessory obturator nerve (L3-L4)

Question 35

mx innervated by accessory obturator nerve only in 9% of cases

Answer 35

pectineus

Question 36

Two divisions of lumbar plexus

Answer 36

posterior and anterior

Question 37

Nerves in posterior lumbar plexus

Answer 37

lateral femoral cutaneous and femoral nerve

Question 38

Nerves in anterior lumbar plexus

Answer 38

obturator and accessory nerves

Question 39

The sacral plexus is formed by what rami and trunks

Answer 39

lumbosacral trunk, the ventral primary rami of the first, second, and third sacral nerves and part of the ventral primary ramus of the 4th sacral nerve

Question 40

Sacral plexus is anterior to what mx

Answer 40

piriformis muscle

Question 41

The sacral plexus is whereon the pelvic wall

Answer 41

on the posterior pelvic wall

Question 42

Two divisions of sacral plexus

Answer 42

anterior and posterior

Question 43

A number of branches from the sacral plexus pass to the lower limb through the _______ foramen

Answer 43

greater sciatic foramen

Question 44

Letters of nerves from sacral plexus

Answer 44

SISNNPPNP

Question 45

gluteus medius m is innervated by what n from sacral plexus

Answer 45

superior gluteal nerve (posterior division) (L4, L5, S1)

Question 46

gluteus minimus m is innervated by what n from sacral plexus

Answer 46

superior gluteal nerve (posterior division) (L4, L5, S1)

Question 47

tensor fasciae latae m is innervated by what n from sacral plexus

Answer 47

superior gluteal nerve (posterior division) (L4, L5, S1)

Question 48

gluteus maximus m is innervated by what n from sacral plexus

Answer 48

inferior gluteal nerve (posterior division) (L5, S1, S2)

Question 49

inferior gluteal nerve (posterior division) is from what 3 roots

Answer 49

(L5, S1, S2)

Question 50

superior gluteal nerve (posterior division) is from what roots

Answer 50

(L4, L5, S1)

Question 51

Sacral plexus n that is sensory to the skin on the lateral aspect of the skin and foot

Answer 51

sciatic nerve (post and anterior division) (L4 to S3)

Question 52

sciatic nerve (post and anterior division) is from what roots

Answer 52

(L4 to S3)

Question 53

sciatic nerve splits into what 2 nerves

Answer 53

tibial and the common peroneal nerves

Question 54

Hamstring mx are innervated by what

Answer 54

Tibial nerve from sciatic nerve

Question 55

muscles of the leg and foot are innervated by what

Answer 55

Tibial nerve from sciatic nerve

Question 56

nerve to the quadratus femoris muscle and gemellus inferior (anterior division) is from what roots

Answer 56

(L4 - S1)

Question 57

nerve to obturator internus and gemellus superior (anterior division) is from what roots

Answer 57

(L5 - S2).

Question 58

n from sacral plexus that does sensory to the posterior thigh

Answer 58

posterior cutaneous nerves of the thigh

Question 59

posterior cutaneous nerves of the thigh (mainly post division) is from what roots

Answer 59

(S2, S3)

Question 60

sacral plexus n that does sensory to the lower half of the anal canal, perianal skin, and genitalia in both sexes

Answer 60

pudendal nerve (anterior division) (S2 - S4)

Question 61

pudendal nerve (anterior division) is from what roots

Answer 61

(S2 - S4)

Question 62

muscles of the perineum are innervated by what n from sacral plexus

Answer 62

pudendal nerve (anterior division) (S2 - S4

Question 63

nerve to piriformis muscle (posterior division) are from what roots

Answer 63

(S1 - S2)

Question 64

viscera is innervated by what n from sacral plexus

Answer 64

pelvic splanchnic nerves

Question 65

n from sacral plexus that innervates the skin of the lower medial part of the buttocks

Answer 65

Inferior gluteal nerve