The digestive system

Question 1

Draw a longitudinal section of a tooth?

Answer 1

Question 2

What is the dental formula of a pig

Answer 2

• I: 3/3
• C :1/1
• P: 4/4
• M: 3/3

Question 3

What is the dental formula of a herbivore(cow,pig,sheep etc**)?

Answer 3

• I: 0/3
• C: 0/1
• P: 3/3
• M: 3/3

Question 4

What enzyme do salivary glands excrete and what is it’s function?

Answer 4

Amalayse is excrete by the salviary glands and it breaks down starch into maltose.

Question 5

What is the seconary function of saliva?

Answer 5

It acts as a lubricant which wets the food and makes it easier to chew and swallow the food.

Question 6

What happens when food is swallowed?

Answer 6

It is passed to the oesophagus. It is then moved to the stomach along the oesophagus by peristalis. It is prevented from entering the trachea by the epiglottis

Question 7

What is peristalsis?

Answer 7

Peristalsis is the way food entering the osephagus is moved along to the stomach by muscluar contractions that have a rhythmic, wave like motion.

Question 8

What is a ruminant?

Answer 8

A ruminant is an animal that has a four chambered stomach that is modifed and adapted for the digestion of cellulose

Question 9

Describe the stomaches of a ruminant