All can be affected by your social and emotional health as well as nutrition
Answer:
The mucosa, or mucous membrane layer.
Explanation:
It is the innermost tunic of the wall. It lines the lumen of the digestive tract. The mucosa consists of epithelium, an underlying loose connective tissue layer called lamina propria, and a thin layer of smooth muscle called the muscularis mucosa.
Hope I helped! :)
Plasma proteins, or serum proteins. ☺️
Well I'm not sure if I'm right but I believe that the answer is A
