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bluehamster978Lv1

28 Sep 2019

1. Name 10 enzymes and their functions in the digestion of food.Use the following choices: 2 from the mouth, 2 from the stomach, 3from the small intestines and 3 from the pancreas.

2.Discuss the role of calcium, vitamin D and vitamin K in bonehealth and make appropriate and reasoned recommendations fornutrition and exercise.

3.Describe the effects of hormones on a woman

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Keith LeannonLv2

28 Sep 2019

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1. Food passing into the small intestines is very acidic from the hydrochloric acid released by the lining of the stomach and mixed in by churning. The pH of the stomach is about 2 whereas the pH of the small intestines is about 8. A buffer, bicarbonate, is released by the pancreas and used to convert the pH 2 chyme solutions (food) to a pH 8. Explain the importance of the buffer to the continued digestion of your food.

2. Your enzymes have specificity. With this in mind, explain why you need no less than ten different enzymes working on digestion in your small intestines.

3. In a eukaryotic cell there is one nucleus and several mitochondria. Both of these organelles are surrounded by a membrane and contain DNA. With your knowledge of a minimal cell, the cell theory and the endosymbiotic hypothesis, explain whether or not they fit the criteria to be considered a cell and support your answer.

4. Your pancreas cells produce many digestive enzymes necessary for the final digestive processes in your small intestines, including pancreatic amylase to complete the digestion the starches in your food. The pancreatic amylase is secreted from the cells of the pancreas and is carried to the small intestine in the common bile duct. Describe the pancreas cellâs processes that it must go through from production to secretion of this enzyme (amylase).

tanhyena895

27. During expiration a decrease in thoracic cavity size causes a (an) in pressure thus causing the lungs to recoil resulting in a (an) in pressure respectively.

a. decrease intraplueral; decrease intrapulmonary

b. decrease intraplueral; increase intrapulmonary

c. increase intraplueral; decrease intrapulmonary

d. decrease intrapulmonary; increase intraplueral

29. Which of the following is NOT a modification of the tunics of the GI tract?

Brunner's gland

Preyer's patches

haustrum

filiform tastebuds

teniae coli

30. Which of the following does NOT belong with the others?

canine

dentin

enamel

pulp

crown

44. ALL of the following are functions of the liver, EXCEPT:

a. Storage of bile

b. Carbohydrate metabolism

c. Detoxification of the blood

d. Protein and lipid metabolism

e. production of bile and phagocytosis

45. Given the following structures:

1. mouth

2. small intestine

3. hepatic portal capillaries

4. colon

5. esophagus

6. stomach

7. anu

List the structures in the order that protein in jerk chicken passes through after deglutition to the point of absorption

a. 1,5, 6, 2, 4

b. 1, 5, 6, 2

c. 5, 6, 2, 4, 3

d. 6, 2, 4, 3, 7

e. 5, 6, 2, 3

46. Which of the following represents the number of premolars in deciduous dentition of teeth in humans?

a. 2

b. 4

c. 8

d. 12

e. 0

47. Because of gall stones, Fred had his gallbladder surgically removed. Which of the following is the most likely side effect?

a. difficulty with protein digestion

b. difficulty with feces production

c. difficulty with vitamin B12 absorption

d. difficulty with fat digestion

e. difficulty with bile production

49. The final enzymatic breakdown in the digestive processes of most proteins and carbohydrates are accomplished by:

a. enzymes secreted in the stomach and pancreas

b. enzymes secreted in the pancreas

c. enzymes secreted in the brushborder

d. enzymes secreted in the mouth and small intestine

e. enzymes secreted in the pancreas and large intestine

1. Where does most chemical breakdown of carbohydrates occur? A. The stomach B. The small intestine C. The large intestine D. The mouth

2. The pancreas produces

	A.	bicarbonate and enzymes.
	B.	bile and enzymes.
	C.	bicarbonate and bile.
	D.	pepsin and bile.

3. Bile participates in the digestion of ______. Its specific function is to ______.

	A.	proteins . . . break down proteins into short polypeptides
	B.	fats . . . emulsify fats
	C.	fats . . . break down fats into glycerol and fatty acids
	D.	starch . . . break down starch into maltose

4. After chemical breakdown in the small intestine, nutrients are absorbed across the intestinal wall. Where do the nutrients go from there?

	A.	Fats go into the bloodstream to the liver. Water soluble nutrients go into the lymphatic system.
	B.	All nutrients go into the bloodstream to the liver.
	C.	All nutrients go into the lymphatic system.
	D.	Water soluble nutrients go into the bloodstream to the liver. Fats go into the lymphatic system.

5. The enzyme pepsin is found in the ________ and functions to _______________.

	A.	small intestine . . . break down carbohydrates
	B.	stomach . . . partially break down proteins
	C.	mouth . . . partially break down proteins
	D.	stomach . . . break down carbohydrates