Functions of digestive system

Question 1

When materials enter digestive tract via the mouth

Answer 1

Ingestion

Question 2

digestion is

Answer 2

the chemical breakdown of food

Question 3

The secretion

Answer 3

the release of water, acids, enzymes,
buffers, and salts by tract epithelium & gland organs

Question 4

Movement of organic substrates, electrolytes,
vitamins, and water across digestive epithelium

Answer 4

absorption

Question 5

defecation removes feces

Answer 5

excretion

Question 6

What are the six functions of the digestive system

Answer 6

Ingestion
Mechanical processing
Digestion
secretion
absorption
excretion

Question 7

What are the four major layers of the digestive tract

Answer 7

1. Mucosa
2. Submucosa
3. Muscularis externa
4. Serosa

Question 8

when Circular muscles contract behind bolus

Answer 8

circular muscles ahead of bolus relax

Question 9

What happens when Longitudinal muscles ahead of bolus contract

Answer 9

It Shortens adjacent segments

Question 10

.what do Wave of contraction in circular muscles do?

Answer 10

Forces bolus forward

Question 11

Peristaltic motion order

Answer 11

1. Circular muscles contract behind bolus
   * While circular muscles ahead of bolus relax
2. Longitudinal muscles ahead of bolus contract
   * Shortening adjacent segments
3. Wave of contraction in circular muscles
   * Forces bolus forward