16 terms

Digestive System

What's another name for the digestive system?
Alimentary canal
What are some accessory organs of the digestive system?
oral cavity, teeth, tongue, liver, galbladder pancreas
What are the main organs of the digestive system?
mouth, pharynx, esophagus, stomach, small and large intestine
What are activities of the digestive systems?
Ingestion, propulsion, mechanical digestion, chemical digestion, absoprtion, and defecation
What happens in injestion?
Food eaten.
What happens in propulsion?
Food moves.
Is paristalisis voulentary of involuntary?
Is swalling voulentary of invoulentary?
What happens during mechanical digestion?
Small chunks of foood
What's segmentation?
Rhythmic local consitrictions of intestine
What happens during chemical digestion?
Chemical breakdown
What happens during absorption?
movements of nutrients from GI to blood or lymph
What happens during defecation?
Elimination of stuff that couldn't be digestible
How is digestion regulated?
chemical and mechanical stimuli, intrinsic controls, and extrinsic CNS control
How does chemical and mechanical stimuli work?
activate or inhibit glands, peristalsis help, strech receptors, pH receptors
How do extrinsic control of CNS work?
Long reflexes from GI tract