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anatomy 2 > abdominal cavity lab > Flashcards

abdominal cavity lab Flashcards

1
Q

how big is the gap between lowest rib and iliac crest

A

3-5cm

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2
Q

what organs occupy the left hypochondrium

A

stomach, spleen, tail of pancreas, left colic flexure (colon), left kidney

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3
Q

what organs are in the right iliac region

A

caecum, appendix, ascending colon, iliocaecal junction

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4
Q

umbilical regon

A

jejunum and ileum (abdominal aorta, IVC)

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5
Q

right lumbar region

A

ascending colon (some small intestine)

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6
Q

embryological significance between tendinous intersections of the rectus abdominus muscle

A

junctions between muscles from adjacent somites

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7
Q

rectus abdominus muscle is surrounded by

A

rectus sheath

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8
Q

what is the action of the rectus abdominus

A

flexion of trunk, generate intra-abdominal pressure

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9
Q

what is the action of oblique muscles

A

pull down the ribcage, lateral flexion of trunk

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10
Q

what do the abdominal wall muscles do when coughing

A

tighten up, increasing intraabdominal pressure to expel aid from the lungs when the diaphragm contracts

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11
Q

direction of fibres of rectus abdominus

A

vertical

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12
Q

direction of fibres of external oblique

A

medial and superior (V shape)

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13
Q

direction of fibres of internal oblique

A

medial and inferior (A shape)

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14
Q

transversus abdominus

A

horizontal

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15
Q

why are the fibres of the abdominal wall muscles in different directions

A

to enable contraction of the walll in all directions equally

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16
Q

3 flat muscles of of the abdomen

A

external oblique
internal oblique
transversus abdominus

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17
Q

three flat muscles of the abdomen make up

A

the rectus sheath

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18
Q

what passes through the inguinal canal n males

A

the spermatic cord

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19
Q

what passes through the inguinal canal in females

A

round ligament of the uterus (ligament teres)

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20
Q

which segmental nerves supply the abdominal wall near the xiphoid

A

T6-8

21
Q

which segmental nerves supply the abdominal wall around the umbilicus

A

T10

22
Q

which segmental nerves supply the abdominal wall near the pubis

A

T12/L1

23
Q

why are males more prone to hernias than females

A

larger inguinal canal

peritoneal cavity sometimes continuous with tunica vaginalis of scrotum

24
Q

skin is continuous with

A

scrotal skin with darts muscle

25
Q

scrap’s and camper’s fascia are continuous with

A

colle’s fascia

26
Q

external oblique is continuous with

A

external spermatic fascia

27
Q

internal oblique is continuous with

A

cremaster muscle

28
Q

transversus abdominus is continuous with

A

nothing

29
Q

transversals fascia is continuous with

A

internal spermatic fascia

30
Q

exteraperitoneal fat is continuous with

A

testis

31
Q

peritoneum is continuous with

A

tunica vaginalis

32
Q

what’s the difference between the darts and cremaster smooth muscles

A

dartos is smooth muscle of the skin of scrotal/penis/foreskin - its wrinkes the skin to reduce the surface area for heat exchange if the ambient temp is cold
cremaster is skeletal muscle that can lift the testicle closer to the body when ambient temp is low, or relax and lower when temp is hot

33
Q

function of the greater omentum

A

reduce friction

34
Q

lesser omentum connects to

A

the liver

35
Q

the lesser sac is open to the abdominal cavity by

A

the epiploic foramen

36
Q

the lesser sac is in continuity with

A

the omental bursa

37
Q

advantage of the peritoneal cavity

A

allows movement of organs

38
Q

peritoneum originals from

A

lateral plate mesoderm - spanchnoplluere

39
Q

cavity giving rise to the peritoneal cavity

A

intraembryonic coelom

40
Q

organs that are stuck to the posterior abdominal wall

A

retroperitoneal

41
Q

gut tube organs that have mesenteries

A

stomach, small intestine, transverse colon, sigmoid colon

42
Q

digestive organs that are retroperitoneal

A 
pancreas 
duodenum 
ascending colon 
descending colon 
rectum
43
Q

artery supplying the foregut

A

coeliac trunk

44
Q

artery supplying the midgut

A

superior mesenteric

45
Q

artery supplying the hindgut

A

inferior mesenteric

46
Q

where is the junction between fore and midgut

A

just past the major duodenal papilla

47
Q

where is the junction between midgut and hindgut

A

last 1/3 of transversals colon

48
Q

name the organs that develop in the central mesentery

A

liver, ventral pancreas

49
Q

organs that develop in the dorsal mesentery

A

dorsal pancreas and spleen

anatomy 2 (22 decks)

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