Definitions: Journal Week 14

This week, focus was on the digestive systems and with an exam coming in close, I wanted to use this blogpost to showcase the major organs in digestive system II and III as well as their structures.

Alimentary Canal: 
Functions: 
1) Physical barrier to noxious substances, antigens, pathogenic organisms.
2) Immune function (ring of lymphatic tissue surrounding the oral cavity).
3) Secretion (e.g digestive enzymes, mucin, HCl)
4) Absorption

Mucosa: Epithelium

Submucosa: Irregular connective tissue

Muscularis externa: Layer of muscle tissue, contracts and assists with movement down the canal.

Liver: functions in processing and storing nutrients

-Produces albumin, glycoprotein

Exocrine function: secretes bile

Endocrine function: modifies hormones

-Thyroxine

-Vitamin D, A, K

Pancreas: endocrine and exocrine functions

Exocrine functions: produced by acini cells. 

-peptidases

-sodium bicarbonate

Endocrine functions: 

-Insulin

-Glucagon