lecture 16 Flashcards
(29 cards)
the name for the first part of the small intenstine and its function
Doudenum:
it receives partially digested food from the stomach and complete the digestive process
the name for the second part of the small intenstine and its function
jejunum:
it absorbs the nutriens
the name for the third part of the small intenstine and its function
ileum:
it absorbs vitamin B12, bile salts and remainder of nutrients
what type of muscle does the small intestine have
smooth muscle
what and where is the submucosa
its a layer of loose connective tissue located beneath the mucosa. It’s a supporting layer that provides structure and contains blood vessels
what muscle is placed along the walls of the digestive tract
muscularis externa
what type of muscle is the musucularis externa
smooth muscle
what is the digestive tract
a long, hollow tube that extends from the mouth to the anus
what is the name for the outer liner of the digestive tract
serosa
what is the plicae circulares
its the folds of the mucosa and submucosa found in the small intestine
what is the function of the plicae circulares
it increases surface area for absorbtion
what is intenstinal villi
tiny, finger-like projections that line the inside of the small intestine
what is function of the intenstinal villi
They significantly increase the surface area of the small intestine, which aids in the efficient absorption of nutrients from digested food
what are the goblet cells
they are cells that form the structural basis of mucus
what are Columnar epithelial cells
the Columnar epithelial cells are elongated, column-shaped epithelial cells, typically taller than they are wide
what are the function of the columnar epithelial cells
They play crucial roles in absorption, secretion, and protection.
what is the micro villi
Microvilli are tiny, microscopic, finger-like projections of the cell membrane, primarily found on the surface of epithelial cells
what are the three main section of the large intestine
ascending (up)
transverse (darth maul)
decending (down)
where is the cecum
between the ileum and the ascending colon
what is the function of the cecum
it collects and stores material from the ileum
what is the apendix
a small, finger-shaped pouch that extends from the large intestine, specifically the cecum, on the lower right side of the abdomen
what is the function of the apendix
it serves as storage of gut flora
what is the rectum
it’s the final section of the large intestine, located just before the anus, and serves as a temporary storage area for feces before they are expelled from the body
what is the Celiac trunk artery
it’s a major branch of the abdominal aorta responsible for supplying blood to the organs. It arises from the aorta and typically divides into three branches: the left gastric artery, splenic artery, and common hepatic artery.
