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COM Anatomy, Biochemistry, OS > Arteries and innervation of anterior abdominal wall > Flashcards

Arteries and innervation of anterior abdominal wall Flashcards

1
Q

Superior Epigastric A

A

anastomoses with Inferior epigastric a. in rectus abdominis muscle

branches from internal thoracic

deep arterial supply

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2
Q

Inferior Epigastric A

A

branches from external iliac a

anastomoses with superior epigastric a. in rectus abominis m

deep arterial supply

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3
Q

Musculophrenic A

A

arises from internal thoracic a, runs along costal margin

deep branch

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4
Q

posterior intercostal a 10-11 and subcostal a

A

arise from thoracic aorta, lie between transversus abdominis and internal oblique

enter rectus sheath to anastomose with epigastric arteries

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5
Q

Lumbar arteries

A

abdominal counterparts to intercostal

four on each side L1-L4

deep branch

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6
Q

Deep Circumflex A.

A

arises from external iliac a.

anastomoses with lower intercostal a.s by ascending branch

deep branch

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7
Q

superficial circumflex iliac a.

A

arise from femoral a., run in superficial fascia

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8
Q

superficial epigastric a

A

goes to umbilical region

arises from femoral a

runs in superficial fascia

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9
Q

external pudendal a

A

goes to suprapubic, pubic, and genital regions

arises from femoral a

superficial blood supply

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10
Q

superficial drainage of of skin and subcutaneous tissue, general of superior region

A

drain superiorly to axillary vein via thoracic and thoracoepigastric veins

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11
Q

caput medusa

A

distended paraumbilical veins inside camper’s fatty tissue

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12
Q

superficial drainage of of skin and subcutaneous tissue, general of inferior region

A

drains inferiorly to femoral v through tributaries

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13
Q

deep draining of muscular wall

tributaries of subclavian
tributaries of IVC
tributaries of external iliac
tributaries of azygous

A

subclavian receive:
musculophrenic and superior epigastric v

IVC receives
lumbar veins

external iliac receives
inferior epigastric
deep circumflex iliac

azygous system
posterior intercostal and subcostal

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14
Q

Sensory dermatomes

T7-T11

A

arise from intercostal n

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15
Q

Sensory dermatomes

T12

A

subcostal n

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16
Q

Sensory dermatomes

L1-L4

A

originate from lumbar plexus

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17
Q

Thoracoabdominal intercostal nerves arise from ____ vertebra

A

T7-T12

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18
Q

Thoracoabdominal intercostal nerves

A

innvervates rectus abdominis
supplies skin, muscles, and parietal peritoneum

branch to form lateral cutaenous branches

arise at about anterior axillary line
pierce abdominal muscles to reach dermis

19
Q

L1-L4

A

lumbar ns

20
Q

T12

A

subcostal n

21
Q

T7-T11

A

intercostal ns

22
Q

T7 is ___regions

A

xiphoid region

23
Q

T10 is ____region

A

umbilical region

24
Q

L1 is ____ region

A

inguinal fold region

25
Q

where in general do anterior abdominal wall muscles lie?

A

between abdominal internal oblique and transversus abdominis

they pierce rectus sheath to innervate rectus abdominis muscles

26
Q

what in general do anterior abdominal wall muscles innervate?

A

rectus muscle, skin, and PARIETAL PERITONEUM

27
Q

L1 and L2 are part of the

A

lumbar plexus

28
Q

Iliohypogastric n

A

L1

sometimes involves T12

29
Q

ilioinguinal n.

A

L1

genitofemoral n. L1 and L2

30
Q

genitofemoral n.

A

L1 and L@

31
Q

iliohypograstric n

A

L1 and sometimes T12

exits posterior abdominal wall between quadratus lumborum and psoas m.

enters abdominal wall and runs between muscles- exits to become cutaneous

LATERAL cutaneous branch

ANTERIOR cutaneous branch (supplies suprapubic region)

32
Q

ilioinguinal n

A

L1

exists posterior abdominal wall between quadratus lumborum and posas m.

enters inguinal canal. emerges through superifical inguinal ring

supplies groin, thigh, scrotum/labium major

33
Q

Genitofemoral nerve

A

L1 and L2

Exits posterior wall THROUGH psoas m.
runs between psoas and peritoneum

34
Q

Genital branch of genitofemoral nerve

A

externs inguinal canal through the deep inguinal ring and exists the inguinal canal through the superifical inguinal ring

innervates cremaster muscle or is cutaneous to the labium majus

35
Q

femoral n.

A

exits inferior to the inguinal ligament

cutaneous to the femoral triangle area

36
Q

Iliohypogastric n: pierces what muscle, runs between what two muscles, sends a branch where, communicates with whom, and terminates where

what major cord does it run down?

A

pierces internal oblique and superior to the ASIS
runs between IO and EO muscles

sends a lateral branch to the skin of the gluteal region

innervates anterolateral abdominal muscles

communicates with iliioinguinal n.

runs on surface of spermatic cord or round ligament of uterus

emerges through superficial inguinal ring

terminates as anterior cutaneous branches to hypogastric (suprapubic regions)

37
Q

Ilioinguinal n

runs on the surface of what cord

emerges where

supplies innervation to what structures

A

surface of spermatic cord or round ligament of uterus
emerges from superficial inguinal ring
supplies skin of groin and scrotum/labium majus

38
Q

genitofemoral n.

A

L1/L2

exits intervertebral forament and runs through the psoas m.

divides into genital branch and femoral branch either within the muscle or after emerging from the muscle

39
Q

genital branch runs through

A

deep inguinal ring, passes through inguinal canal and emerges through the superficial ring

40
Q

genital branch supplies innervation to whom

A

to cremaster m. and skin of scrotum in men

genital branch supplies the skin of the labia majora in females

41
Q

femoral branch of the genitofemoral nerves exits what

innervates what

A

the abdomen inferior to the inguinal ligament, sometimes through the femoral seath

femoral branch supplies the skin of the thigh over the femoral triangle

42
Q

umbilical hernia: in infants

A

involves umbilicus
scar of umbilicus does not heal over completely

usually heals on its own spontaneously

small and wider transversely

43
Q

umbilical hernia: in adults

A

results from weakened abdominal wall around umbilicus
more common in women
requires surgical repair
usually superior to umbilical scar

COM Anatomy, Biochemistry, OS (34 decks)

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