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NYCC Gross Anatomy 3 > Anterolateral Abdominal Wall > Flashcards

Anterolateral Abdominal Wall Flashcards

1
Q

Name the 3 subdivisions of the abdominopelvic cavity

A

abdomen
greater pelvis
lesser pelvis

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2
Q

Describe the boundaries of the abdominal cavity

A

thoracic diaphragm (4th intercostal space) to pelvic inlet

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3
Q

What is the abdominal cavity skeletally bound by?

A
  • costal cartilages 7-10
  • ribs 11-12
  • xiphoid process
  • L1-5
  • os coxae (ilium & pubis)
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4
Q

Describe the borders of the greater pelvis

A

superior ilium to pelvic inlet (above)

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5
Q

Describe the borders of the lesser pelvis

A

pelvic inlet (below) to pelvic diaphragm

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6
Q

Name 3 functions of the abdominopelvic cavity

A
  • protection & support
  • assist breathing
  • control intra-abdominal pressure
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7
Q

name the planes that form the 4 quadrants of the abdominopelvic cavity

A

sagittal
transumbilical (L3-4/umbilicus)

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8
Q

name the planes that form the 9 regions of the abdominopelvic cavity

A

2 midclavicular
subcostal
intertubercular

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9
Q

name the 9 regions of the abdominopelvic cavity

A
  • L/R hypochondrium
  • epigastric region
  • L/R flank
  • umbilical region
  • L/R groin
  • pubic region
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10
Q

Describe the boundaries of the anterolateral abdominal wall

A
  • costal cartilage 7-10 & xiphoid process
  • inguinal ligaments
  • iliac crests
  • pubic crests
  • pubic symphysis
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11
Q

name the components of the anterolateral abdominal wall

A
  • skeleton
  • skin
  • fascia
  • muscles
  • fat
  • parietal peritoneum
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12
Q

name the 3 main layers of fascia of the anterior abdominal wall

A

superficial
investing
deep

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13
Q

what are the 2 sublayers of superficial fascia?

A

camper
scarpa

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14
Q

describe camper fascia

A
  • most superficial
  • fat storage (fatty layer)
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15
Q

describe scarpa fascia

A
  • inferior to umbilicus (only in this region)
  • deep to camper fascia
  • membranous (not fatty)
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16
Q

describe investing fascia

A
  • mostly epimysium
  • covers external surface of muscles & aponeuroses
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17
Q

deep fascia is also called _____

A

endoabdominal fascia
(transversalis fascia deep to transversus abdominis)

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18
Q

describe endoabdominal fascia

A

lines anterolateral abdominal wall deep to muscles

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19
Q

name the 3 flat muscles of the anterolateral abdominal wall

A

external oblique
internal oblique
transversus abdominis

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20
Q

name the 2 vertical muscles of the anterolateral abdominal wall

A

rectus abdominis
pyramidalis

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21
Q

origin & insertion of external oblique

A

O: external surfaces of ribs 5-12
I: linea alba, pubic tubercle, ant 1/2 of iliac crest

(hands in pockets)

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22
Q

innervation of external oblique

A

ant rami T7-12

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23
Q

action of external oblique

A
  • compress & support abdominal contents
  • bilaterally flex trunk
  • contralaterally bends trunk
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24
Q

origin & insertion of internal oblique

A

O:
- thoracolumbar fascia
- ant 2/3 iliac crest
- lat 2/3 inguinal lig
- surrounding CT

I: inf borders ribs 10-12, linea alba, pubic crest, pectineal line

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25
innervation of internal oblique
ant rami T6-12 & L1
26
action of internal oblique
- compress & support abdominal contents - bilaterally flex trunk - ipsilaterally bend trunk
27
origin & insertion of transversus abdominis
O: - internal surface ribs 7-12 & costal cartilages - thoracolumbar fascia - iliac crest - lat 1/3 inguinal lig - surrounding CT I: linea alba, aponeurosis of int oblique, pubic crest, pectineal line
28
innervation of transversus abdominis
ant rami T6-12 & L1
29
action of transversus abdominis
compress & support abdominal contents
30
origin & insertion of rectus abdominis
O: pubic symphysis, pubic crest I: costal cartilages 5-7, xiphoid process
31
innervation of rectus abdominis
ant rami T6-12
32
action of rectus abdominis
- compress & support abdominal contents - bilaterally flex lumbar spine - tense abdominal wall - stabilize & control pelvic tilt (antilordosis)
33
origin & insertion of pyrimidalis
O: front of pubis & pubic symphysis I: linea alba
34
innervation of pyrimidalis
ant ramus T12
35
action of pyrimidalis
tense or draw down linea alba
36
what is an aponeurosis?
sheet-like tendon
37
what forms aponeuroses of the anterior abdominal wall?
fibers of 3 flat muscles end near the midclavicular line, forming aponeuroses
38
fibers of 3 flat muscles of the anterior abdominal wall **blend** to form the ____
rectus sheath
39
what does the rectus sheath surround?
rectus abdominis, except inferior 1/4 of posterior portion
40
what marks the end of the posterior rectus sheath?
arcuate line
41
where is transversalis fascia located?
only inferior to arcuate line
42
aponeuroses of the anterior abdominal wall **interweave** forming the ____
linea alba
43
the linea alba separates ____
rectus abdominis muscles
44
where is linea semilunaris located?
lateral margin of rectus abdominis
45
what subdivides rectus abdominis and improves force generation?
tendinous intersections which attach to anterior rectus sheath
46
name the contents of the rectus sheath
- superior epigastric a + v - inferior epigastric a + v - lymphatic vessels - v rami of thoracoabdominal nn (T6/7 - T11) and T12 (subcostal n) - pyramidalis
47
name the nerves of the anterolateral abdominal wall
- thoracoabdominal nn - lateral (thoracic) cutaneous branches - subcostal n - iliohypogastric n - ilioinguinal n
48
where are thoracoabdominal nerves located?
neurovascular plane between internal oblique and TVA
49
motor branches of thoracoabdominal nerves supply...
all the muscles
50
spinal levels of lateral thoracic cutaneous branches
T7 - 9/10
51
spinal level of subcostal nerve
v ramus T12
52
spinal level of iliohypogastric nerve
terminal branch of v ramus L1
53
spinal level of ilioinguinal nerve
terminal branch of v ramus L1
54
which dermatome is associated with the umbilicus?
T10
55
what dermatome is associated with the groin?
L1
56
skin & subcutaneous tissues of the anterolateral abdominal wall drain into the... via...
superior vena caval system - internal thoracic v medially - lateral thoracic v laterally & inferiorly
57
what forms collateral circulation bypassing the vena cava system?
thoracoepigastric v + anastomosis between sup & inf epigastric vv
58
cutaneous veins surrounding the umbilicus anastomose with ____ tributaries
hepatic portal v
59
describe the arrangement of the arterial supply of the anterolateral abdominal wall
follows arrangement of mm: - oblique & circumferential laterally - vertical anteriorly
60
circumferential vessels of the anterolateral abdominal wall are continuations of what vessels?
7th - 11th posterior intercostal aa subcostal a deep circumflex iliac a
61
name the vertically oriented vessels of the anterolateral abdominal wall
- superior & inferior epigastric - musculophrenic a + branches
62
superior epigastric artery originates from the ____
internal thoracic a
63
inferior epigastric artery originates from the ____
external iliac a
64
musculophrenic artery originates from the ____
internal thoracic a
65
internal thoracic artery originates from the ____
subclavian a
66
superior to the transumbilical line, superficial lymphatic vessels drain into...
axillary lymph nodes & parasternal lymph nodes
67
inferior to the transumbilical line, superficial lymphatic vessels drain into...
superficial inguinal lymph nodes
68
deep lymphatic vessels are like ____, and drain into what lymph nodes?
deep veins external iliac, common iliac, R/L lumbar lymph nodes
69
based on the regional divisions of the abdominopelvic cavity, which quadrant would you expect to find the liver?
upper right

NYCC Gross Anatomy 3 (27 decks)

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