Question

1. What are chylomicrons? Why can’t they go directly into the circulatory system? Where do they go?

a.

2. Which of the four basic processes take place in the mouth (you can list more than one)?

3. What are sphincters and what are their purposes?

4. What types of materials are contained in saliva?

5. What is peristalsis? How does it ensure one-way movement?

6. Which of the four basic processes take place in the stomach? List three secretions from the stomach and state what these secretions do?

Answer 1

Chylomicron is a lipoprotein that is composed of cholesterol, triglyceride and apolipoprotein B 48 and carrys triglyceride to liver.chylomicron are extruded from golgi exocytotic vesicles,which are transported to basolateral aspect of entrocytes, instead of being absorbed directly into capillary blood,chylomicron are transported first into lymphatic vessel that penetrates into each villus called central lacteal.

Mouth:

The mouth is the begining of digestive tract.In fact digestion starts here as soon as we take first bite of meal.Chweing breaks food into small pieces that are more easy to be digested while saliva mixed with food to begins the process of breaking it to down into a form our body absorbed it easily.

Throat:

Throat is the next destination of food we have been eaten from where food travelled to osophagus.

Esophagus is muscular tube extending from pharynx to stomach.by means of series of contractions called peristalsis.

Process of digestion include Ingestion, propulsion,mechanical or physical digestiob and chemical digestion etc. take place.

Sphincters are special and muscular body parts that open and close certain body parts.the purpose of sphincter to regulate the passage of some types of fluid such bile,urine and fecal matter.

Saliva contained 98% water but contains many important substances including electrolytes, mucus,antibacterial contains so different types of enzymes.

The digestive system is made up of gastrointestinal tract. The digestion has various process take place by different organs.chewing is done by mouth, Peristalsis is done by esophagus, Upper muscle relaxes in the stomach to let food enter.peristalsis done by small intestine.