Test - Digestive System

Question 1

1. Is an enzyme a nutrient that the body needs? True or False

Answer 1

False

Nb 74

Question 2

2. What is chyme?

Answer 2

It is what food is called after it’s been digested

Nb 74

Question 3

5. What process takes place in the large intestine?

Answer 3

Water is absorbed from undigested food

Nb 74

Question 4

12. True or false, mechanical digestion does occur in the stomach?

Answer 4

True

Nb 77

Question 5

17. Which of the following organs is considered to be a part of the alimentary canal? Pancreas, Gallbladder, Skin, or Liver.

Answer 5

None of these

Nb 76

Question 6

18. Saturated fats, Unsaturated fats, Proteins, or Carbs. Which nutrient is made up of amino acids?

Answer 6

Proteins

Nb 76

Question 7

19. What substance coats and protects the inside of the stomach?

Answer 7

Mucus

Nb 76

Question 8

21. In what part of the body does most chemical digestion take place?

Answer 8

Small intestine

Nb 75

Question 9

26. Where does the alimentary canal end?

Answer 9

Large intestine

Nb 76

Question 10

28. Where does digestion of carbohydrates begin?

Answer 10

Mouth

Nb 76

Question 11

33. About half of the different________that make up proteins are made inside the body?

Answer 11

Amino acids

Nb 76

Question 12

38. True or False? Most chemical digestion takes place in the small intestine.

Answer 12

True

Nb 71

Question 13

40. True or False? Does bacteria in the esophagus make vitamin K?

Answer 13

False, in the large intestine

Nb 77

Question 14

43. Compare large intestine and small intestine.

Answer 14

Large intestine - It is bigger than the small intestine, it is shorter but thicker.

Small intestine - It is smaller than the large intestine, it is longer but thinner.

Nb 71, 72, & 76

Question 15

45. What is peristalsis? What organ does it occur?

Answer 15

Peristalsis is an involuntary muscle contraction. It occurs in the stomach, small intestine, large intestine, and liver.

Nb 71

Question 16

48. A. Where is the duodenum?
    It’s in the small intestine.
    B. Could the duodenum preform its function without the pancreas. Explain

Answer 16

A. It’s in the small intestine.
B. The pancreas produces enzymes that aid in chemical, without those enzymes chemical digestion could not be completed. The small intestine would be unable to absorb small nutrient molecules into the bloodstream.

Nb 71, 73, 74, 75, and 76

Question 17

50. The organ that almost all chemical digestion takes place?

Answer 17

Small intestine

Nb 71

Question 18

52. The structures that line the small intestine? Describe its function? This means what is on the inside of this whole organ and what do these structures do?

Answer 18

Villi - Increases the surface area of the intestinal wall, this area allows for more area where the nutrients can be absorbed.
Nb 71

Question 19

53. The organ through which food is absorbed?

Answer 19

Small intestine - Most absorption of
nutrients takes place here. The small intestine consists of three parts: the
duodenum, jejunum, and ileum. It also contains
villi, which play a key role in absorbing
nutrients.
Nb - 71

Question 20

55. Essay

Answer 20

Mechanical digestion -Teeth (incisors) cut and tear (canine) food into smaller pieces. They (molars) also crush and grind food. Chemical digestion - Saliva moistens food, making it easier to swallow. Saliva contains an enzyme salivary amylase that chemically breaks down starch into smaller sugar molecules called maltose. The tongue mixes and positions the food for swallowing.

Nb 71, 72, 73, 74, 75, and 76