Anatomy Lab Quiz 5 Flashcards
A cavity or hole inside of a tube, blood vessel, or hollow organ.
- What is an example of this?
Lumen
- For example, the blood
flows through the lumen of a blood vessel.
A small, ball-shaped cluster of secretory cells surrounding ducts.
Acini
A tubular structure that transports secretions of a gland.
- What are they comprised of?
Duct
- Comprised of simple
cuboidal epithelium, arranged in a doughnut pattern.
Large, roundish projections or divisions of an organ that can be seen with the naked
eye
Lobes
Small divisions of the cells in an organ, form a functional unit. What do they usually require?
Lobules
- usually require a microscope to be seen
The four layers of tissue in the stomach, small intestine, and large intestine
Tunics
4 layers of the alimentary canal in order (from superficial to deep)
Serosa
Muscularis externa
Submucosa
Mucosa
A very thin tunic made of simple squamous epithelium that surrounds the outside of
the organ
- What layer is this?
Serosa
- Outermost layer
Layer that lies immediately inside the serosa. It is comprised of at least two layers
of the smooth muscle
Muscularis externa
What does the outer layer of the muscularis externa have?
longitudinal and circular layers
What do the muscle layers of the muscularis externa do?
Help with peristalsis
The wavelike movement of muscles moving foodstuffs through the
alimentary canal to the outside of the body.
Peristalsis
In one
layer,
The nuclei should look like cigars; in the other, they should look round.
Lay next to the muscularis externa. It is a rather empty-looking tunic in most
organs
- What does it contain?
Submucosa
- scattered nuclei
- collagen fibers
- glandular
tissue
Layer that is closest to the lumen
Mucosa
What are the three layers of the mucosa starting from the outside and working in
muscularis mucosa
lamina propria
epithelium
A very thin layer of
smooth muscle in the mucosa, usually quite distinct as a dark pink band
Muscularis mucosa
A loose matrix of cells and ground
tissue
lamina propria
Protects the organ from the
contents in the lumen.
epithelium
