Introduction to Circulatory System

Q. Select the function of salivary amylase from the following options.

1. Breaks down protein into amino acids
2. Breaks down fat globules into smaller fat droplets
3. Breaks down complex sugar into simple sugar
4. Breaks down protein into peptides

Q.

If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected:

1. Proteins break down into amino acids.

2. Starch breaks down into sugar.

3. Absorption of vitamins.

4. Fats break down into fatty acids and glycerol.

Q.

The type of circulatory system in humans is:

1. Open circulatory system

2. Closed circulatory system

3. Both of these

4. None of these

Q.

Which of the following is not a part of the circulatory system?

1. Heart

2. Blood

3. Blood vessels

4. Kidney

Q. The blood vessels that normally carry blood rich in carbon dioxide are known as.

1. arteries
2. veins
3. capillaries

Q.

The enzymes present in the saliva convert :

1. fats into fatty acids and glycerol

2. starch into simple sugars

3. proteins into amino acids

4. complex sugars into simple sugars

Q.

Which one of the following systems helps in the transport of food, water, and gases to all the parts of the body?

1. Circulatory system

2. Digestive system

3. Nervous system

4. Respiratory system

Q. Which of the following system is responsible for pumping of blood to all parts of the body?

1. Respiratory system
2. Circulatory system
3. Digestive system
4. Excretory system

Q.

From where to where do the following blood vessels carry blood?
(i) Hepatic vein
(ii) Hepatic portal vein

Q.

Do cockroaches breathe through their lungs?

Q.

Statement 1: The large intestine secretes enzymes.
Statement 2: It absorbs water from the undigested material leaving semi-solid faeces which passes through the rectum.

Identify the statement(s) which is/are true from the above.

1. Both Statement 1 and 2

2. Only Statement 1

3. Only Statement 2

4. None of the Statements

Q. What is an organ system? Name three organ systems in the human body and their main functions.

Q.

Mention the function of the following:
Blood vessel

Q. Which of the following is/are the end product(s) of fat digestion?

1. Glucose
2. Fatty acids
3. Glycerol
4. Amino acids

Q.

How do blood vessels work?

Q. What happens in a heart attack?

Q.

Which of the following living organisms do not possess a circulatory system?

1. I and II

2. II

3. IV

4. II and IV

Q. The main function of the __________ system is to transport nutrients, oxygen and waste.

Q.

The blood circulation that delivers oxygen to the body is called ________ circulation.

Q. Which of the following is/are function(s) of the circulatory system?

1. Delivery of oxygen to cells
2. Delivery of nutrients to cells
3. Removal of wastes from cells
4. Excretion of urea