respiratory and digestive quiz 5 terms

Question 1

lumen

Answer 1

a cavity or hole inside of a tube, blood vessel or hollow organ. for example, blood flows through this of a blood vessel

Question 2

acini

Answer 2

a small, ball-shaped cluster of secretary cells surrounding ducts

Question 3

duct

Answer 3

a tubular structure that transports secretions of a gland. are comprised of simple cuboidal epithelium, arranged in a donut pattern.

Question 4

lobes

Answer 4

large, roundish projections or divisions of an organ. can be seen with the naked eye.

Question 5

lobules

Answer 5

small divisions of cells in an organ, forming a functional unit. usually require a microscope to be seen.

Question 6

alimentary canal order, 1st to last

Answer 6

mucosa - muscularis mucosa - lamina propria - epithilium

or

serosa - muscularis externa - submucosa - mucosa

Question 7

serosa

Answer 7

thin tunic made of simple squamous epithelium that surrounds outside of the organ

Question 8

muscularis externa

Answer 8

lies immediately outside the serosa, two layers of smooth muscle.

Question 9

submucosa

Answer 9

next to muscularis externa, empty looking tunic in most organs with scattered nuclei