Question

1-Peristalsis is a process that happens in the following part(s) of the digestive system.

stomach

large intestine

esophagus

all of these

small intestine

2-Which of the following processes is NOT involved in the absorption of simple sugars across the small intestine?

secondary active transport

primary active transport

simple diffusion

facilitated diffusion

3-Protein digestion begins in the

oral cavity

large intestine

stomach

small intestine

esophagus

4-Carbohydrate digestion begins in the

Ooral cavity

stomach

small intestine

large intestine

esophagus

5-The organ which produces the largest number of different enzymes for the digestive system is

the liver

pancreas

the large intestine

the stomach

the salivary glands

small intestine

6-Breakdown products of which of the following substances are absorbed by lymphatic capillaries associated with the digestive tract?’

lpids

carbohydrates

proteins

nucleic acids

7-Which of the following muscles contributes the most to normal resting inspiration?

external intercostals

rectus abdominus

diaphragm

Internal intercostals

8-The intrapleural pressure (relative to atmospheric pressure)

becomes negative during inspiration and positive during expiration

is always positive

becomes positive during inspiration and negative during expiration

is always negative

9-The sensor that has the greatest influence on the respiratory control center is

the oxygen sensor

the central chemoreceptor

the aortic bodies

the carotid bodies

10-The driving force for gas exchange across the alveolis is

Osmosis

primary active transport

simple diffusion

facilitated diffusion

secondary active transport

11-Aforced expiration may be caused by the contraction of which of the following muscles?

external intercostals

rectus abdominus

diaphragm

latisimus dorsi

12-Most of the carbon dioxide which is circulating the blood stream is normally in the following form:

dissolved gas

bicarbonate ( HCO3-)

calscium carbonate

carbaminohemoglobi

13-The mechanism of action for Antidiuretic Hormone ADH is

Increasing the number of aquaporins ( waterchannel) is the collecting duct

Increasing the activity of the salt pumd in the ascending of Henle

constricting the afferent arteriole .

stimulation of the Na+\k+ Atpase

14-The greatest amount of reabsorption happens in the

distal convoluted tubule

collecting duct

loop of Henle

proximal convuluted tubule

glomerulus

15-The presence of Aldosterone in the kidney will result in

retention of sodium

retention of water

all of these

none of these

secretion of potassium

16-Which of the following are normally exduded from the filtrate the nephron?

Urea

amino acids

water

erythrocytes elucose

17-Which of the following processes happens primarily at the glomerulus

Filtration

Secretion

Reabsorption

Distillation

18-During the process of secretion in the nephron small substances are moved

from the blood to the nephron

by hydrostatic pressure

by osmosis

from the nephron to the blood

19-The number of oocytes in an ovary is highest

during puberty

at birth

in the middle of the menstrual

at menopause.

20-Spermatogenesis occurs in the

seminiterous tubules

vas deferens

prostate giand

epididymis

Seminal vesicic

21-Which of the following hormones is responsible for stimulating the secretory phase of the uterus?

Estrogen

Testosterone

human chorionic gonadotropin (hCG)

progesterone

22-During the follicular phase of the menstrual cyclethe concentration of estrogen is relative concentration of progesterne is

Decreasing/low

Decreasing/ high

increasing /low

Increasing/high

23-Testosterone is produced by

Sertoli cells

the anterior pituitary gland .

Interstitial cells

mature sperm

spermatogonia

24-Just prior to ovulation the feedback loop between estrogen and the anterior pituitary gland is

positive

negative

25-This is a Answer question, please be brief and to the point: A volunteer in a scientific study is placed in a room which is supplied with a higher than normal partial pressure of oxygen Po 2 =320 mmHg ) but the partial pressure of carbon dioxide is unchanged (P CO2 =0.3 mmHg) . Do you expect to see a change in respiratory pattern in this subject? Support your answer with your reasoning , no support no credit.

26-This is a Short Answer question, please be brief and to the point Describe the function of zymogens in the digestive system use an example to support your answer.

27This is an Essay question, please take some to format your answer accordingly. Be complete but stick to the question. Describe the control mechanism for respiration. Be sure to include the contributions of the various sensorsincluding what they are monitoring and their relative importance, the integrating center and the effectors.

28-This is an Essay question, please take some time to format your answer accordinglyBe complete but stick to the question. Describe the stepwise breakdown (physical chemical ) of one of the classes of organic macromolecules ? Include the ezymes involved in this process and the mechanism (how ) the breakdown products of this macromolecule ultimately absorbed into the body?

29-This is a comprehensive knowledge question , can you assemble the information about separate Systems into an integrated of how the human body works? Think about the components of each system and how they are coordinated to work together to accomplish a common goal Describe the functions and interactions of the circulatory, respiratory and urinary systems in the regulation of body .

Answer 1

Ans:-

1.

C,

All of the given options are correct.

Peristalsis is a process that happens in the esophagus, stomach, small intestine and large intestine parts of the digestive system.

2.

C,

Simple diffusion.

Simple diffusion is not involved in the absorption of simple sugars across the small intestine.

Simple diffusion is involved in the absorption of glycerol, monoglycerides, fatty acids, water soluble vitamins, and water.

Rest of the given options are correct as they are involved in the absorption of simple sugars in the small intestine.

3.

C,

Stomach.

Protein digestion begins in the stomach by the action of an enzyme pepsin.

Pepsin is the active protein digesting enzyme of the stomach.

Rest of the given options are wrong as protein digestion doesn't begin in them.

4.

A,

Oral cavity.

Carbohydrate digestion begins in the oral cavity with the mechanical action of chewing and chemical action of salivary amylase enzyme .

Rest of the given options are wrong as carbohydrate diets doesn't begin in them.