basic structure of the digestive tract

Question 1

what are the 4 major layers of the digestive tract

Answer 1

mucosa, submucosa, muscularis externa, serosa/adventitia

Question 2

what are the different parts of the mucosa

Answer 2

epithelium(sits on basal lamina)
lamina propria(loose connective tissue)
muscular mucosae(thin layer of smooth muscle)

Question 3

what is the submucosa layer made up of

Answer 3

loose connective tissue

Question 4

what is the muscularis externa made up of

Answer 4

2 thick layers of smooth muscle, inner circular layer and outer longitudinal layer

Question 5

what is the serosa/adventitia made up of

Answer 5

outer layer of connective tissue, either suspends digestive tract or attaches to other organs

Question 6

what different variations are there for the mucosa of the digestive tract

Answer 6

protective, absorptive, secretory, protetive+absorptive

Question 7

what is the name of the digestive tracts own nervous system

Answer 7

enteric nervous system

Question 8

where do most neurons in the digestive tract live

Answer 8

in between the 2 muscle layers that make up the muscularis externa, in groups called ganglia