Abdomino-Pelvic Cavity Flashcards
List the quadrants of the abdomino-pelvic cavity
right upper quadrant
left upper quadrant
right lower quadrant
left lower quadrant
Describe the superior and inferior borders of the abdominal viscera
superior: diaphragm
inferior: plane of the superior pelvic aperture - pelvic inlet (this is arbitrary. note that it is anatomically continuous)
function of the visceral ligaments
connect organs to one another and to the abdominal and pelvic wall
List the planes of the abdominal quadrants
median plane
transumbilical plane
List the 9 main regions of the abdomino-pelvic cavity
right and left hypochondrium region
right and left flank/ lumbar region
right and left inguinal region/ iliac region
epigastric
umbilical
pelvic or hypogastric
If someone has right lower quadrant pain, what organs could be affected?
appendix (appendicitis)
right uterine (fallopian) tube
cecum
most of ileum
ascending colon (inferior portion)
right ovary
right ureter: abdominal part
right spermatic cord: abdominal part
uterus (if enlarged)
urinary bladder (if very full)
If someone has left lower quadrant pain, what organs could be affected?
sigmoid colon
descending colon: inferior part
left ovary
left uterine tube
left ureter: abdominal part
left spermatic cord: abdominal part
uterus (if enlarged)
urinary bladder (if very full)
If someone has right upper quadrant pain, what organs could be affected?
liver: right lobe
gallbladder
stomach: pylorus
duodenum: parts 1-3
pancreas: head
right suprarenal gland
right kidney
right colic (hepatic) flexure
ascending colon: superior part
transverse colon: right half
If someone has left upper quadrant pain, what organs could be affected?
liver: left lobe
spleen
stomach
jejunum and proximal ileum
pancreas: body and tail
left kidney
left suprarenal gland
left colic flexure
transverse colon: left half
descending colon: superior part
What comprises the digestive system
digestive tract
liver
gallbladder
stomach
salivary glands
gastrointestinal tract
Is the spleen a digestive organ?
no
define cardia
where the esophagus joins the stomach
fundus
superior rounded part of an organ
why is the fundus hypodense on CT?
full of air generally
what are the 3 parts of the stomach
fundus
body
pyloric part (plyoric antrum and pyloric canal) / pylorus
What separates the stomach and duodenum
pyloric sphincter
What is the smooth muscle of the stomach called
gastric folds/gastric rugae
Describe how the stomach positioning can change based on build
when standing, the stomach descends dramatically when lean. If obese, the stomach will descend less so.
What is a possible reason why individuals whose stomachs descend when upright are less likely to be overweight?
increased satiety signals by this stretch
Where can you find the lesser and greater omentum in relation to the stomach
lesser omentum on the lesser curvature
greater omentum on the greater curvature
Omentum
* describe it
* give function (4)
a fold of peritoneum that extends from the stomach to cover majority of intestines and portions of liver. has rich blood supply
facilitates migration of immune cells into the peritoneal/abdominal cavity
stores fat
can form adhesions to physically walls of areas of inflammation (generally caused by infection or injury); prevents further damage to adjacent tissue and allows time and space for repair
used as a source of tissue for wound repair
parietal vs visceral peritoneum
parietal: lines the abdominal cavity
visceral: lines the organ
collectively called the peritoneum
Why are the kidneys considered a retroperitoneal organ
Posterior to the peritoneal space
Describe where the greater and lesser omentum attaches and its position
greater:
* extends from the greater curvature of the stomach and doubles back and attaches to the transverse colon
* hangs in a fold covering the small intestine
lesser:
* extends from the lesser curvature of the stomach
* attaches to both the liver and duodenum
List the parts of the small intestine and their quadrant location
duodenum: fixed (via peritoneum), thick walled right upper quadrant
jejunum: mostly left upper quadrant
ileum: left and right lower quadrants
Subdivisions of the duodenum
- superior (most superior is intraperitoneal; then dips retroperitoneal)
- descending
- horizontal
- ascending