Flashcards in L1 Deck (35):
What are the spleen and stomach linked via?
The gastrometric ligament
Why is the dorsal mesentery fund at the front ?
What is the function of the inguinal canal?
They are gaps, thru which the testes go thru
What are the 3 layers that the spermatic cord passes through from innermost- outermost
What are the subsequent names of the spermatic cord takes after passing through the layers?
Internal spermatic fascia
External spermatic fascia
describe the endoderm?
Majority of gut, most of epithelium, & glands of the digestive tract
Describe the mesoderm
Describe the ectoderm
Epithelium @ extremities of tract. Cranial-mouth
What processes form the primitive gut and when?
Results from 2 folds; cranial and caudal
@ 4 weeks
@ 4 weeks what membranes are the cranial and caudal ends enclosed by?
what are the 3 gut divisions?
(look at the pics in the slide)
What organs are in the foregut?
Proximal half duodenum
What organs are in the midgut?
Distal half duodenum
Asc+3/4 transverse colon
What organs in the hindgut?
1/4 transverse colon+descending +sigmoid colon and rectum
what is the primitive gut held in position by
Describe the mesentery and its functions
Double layer of peritoneum
Dorsal and ventral
Relative to the gut tube
It suspends gut organs
Pathway for VAN and lymph
What is part of the ventral mesentery that doesn't degenerate during development?
Describe the dorsal mesentery and its functions
Attaches to organs, posterior to abdominal wall,
gives rise to a set of organs:
Mesentery of small and large intestine
Where is the ventral mesentery located?
and what does it become
Gives rise to Falciform ligament
Ligaments around the liver
Degenerates during development- ecept foregut
Generally describe the abdomen
Trunk below diaphragm
What is the abdominal cavity occasionally called?
What is the abdominopelvic divided into
and Greater pelvis
The greater pelvis is continuous with
Describe the barriers of the abdominal wall
Flat abdominal muscles
Lumbar vertebral column
what are the muscles anterior to the abdominal wall
What is the function of the External oblique and description
From- outer surface of lower ribs
to: Linea alba-down midline:
ending at the iliac crest
and pubic tubercle
Works with internal oblique for torsional movement of trunk
Func and descrip of internal oblique
From: lateral 1/3 inguinal ligament
ant 2/3 iliac crest
To: linea alba
Rest of pubic bone
Flex and rotate trunk
func and descrip
From: Lat 1/3 inguinal ligament
Int surface lower 6 ribs
To: Linea alba Crest of pubic bone
Compress and support viscera
Rectus abdominis func and descrip
From: Pubic symphysis + crest
To: xiphoid process
5th-7th costal cartilages
VAN of structures anterior to abdominal wall
A-Sup and inf epigastric, intercostal and circumflec iliac
What additional nerves supply the rectus abdominis
Thoracic and subcoastal nerves
What are the lesser and greater sacs
Formed via organ rotation
Rest of peritoneal cavity- greater sac
What do the sacs communicate via
What is the inguinal canal
Serves as a passage way for the spermatic cord to reach scrotum in male
Round ligament of uterus to reach labia majora in female