Anatomy Quiz 5 Flashcards
A cavity or hole inside of a tube, blood vessel or hollow organ
the blood flows through the ____ of the blood vessel
Lumen
A small, ball-shaped cluster of secretory cells surrounding ducts
Acini
A tubular structure that transports secretions of a gland.
Comprised of simple cuboidal epithelium, arranged in a doughnut pattern
Duct
Large, roundish projections or devisions of an organ.
usually require a microscope to be seen
Lobules
Very thin tunic made of simple squamous epithelium that surrounds the outside of the organ
most superficial
Serosa
Comprised of 2 layers of smooth muscle tissue-the outer layer always has muscle fibers running longitudinally down the organ and the next layer in has muscle fibers running circularly around the organ
The muscle layers help in peristalsis-wavelike movements of muscles moving foodstuffs through the alimentary canal to the outside of the body
Lies immediately inside the serosa
Muscularis externa
Empty looking tunic in most organs, containing only scattered nuclei, a few wavy collagen fibers and sometimes glandular tissue
lay next to the muscularis externa
Submucosa
comprised of 3 layers
closest to the lumen
Mucosa
Thin layer of smooth muscle, usually quite distinct as a dark pink band.
most superficial of the mucosa
Muscularis mucosa
A lose matrix of cells and ground tissue
middle layer of mucosa
Lamina propina
Protects the organ from the contents in the lumen
deepest layer of mucosa
Epithelium