Coronary Circulation

Q.

Question 11
Describe double circulation in human beings. Why is it necessary?

Q.

Insufficient supply of blood to the heart muscle results in chest pain. This condition is called __________.

1. A & C

2. A, B & C

3. A & B

4. B & C

Q.

________ artery carries oxygenated blood to the heart muscles.

Q.

If coronary circulation is removed from the human body, which of the following effects do you think it will have on the body?

1. Nutrients from digestive tract will not be transported to the liver.

2. Mixing of deoxygenated and oxygenated blood in the heart.

3. The heart muscles will stop contracting.

4. No transmission of nerve impulses from vasomotor centre to the sympathetic nerves.

Q.

(i)___ carries blood from digestive tract to liver and (ii)_____carries blood from the liver to the inferior vena cava.

1. (i)Hepatic artery, (ii) hepatic portal vein

2. (i)Hepatic vein, (ii)hepatic portal vein

3. (i)Hepatic portal vein, (ii)hepatic vein

4. (i)Hepatic portal vein, (ii)hepatic artery

Q. Oxygenated blood flows from the left atrium into the ______.

1. right ventricle
2. right atrium
3. left ventricle
4. right pulmonary vein

Q.

The function of the coronary circulation is ________________

1. To supply blood to the musculature of heart.

2. To supply oxygenated blood to the thymus.

3. To remove deoxygenated blood from intestines.

4. To carry blood from the intestines to the liver for glycogen formation.

Q.

The function of the coronary circulation is ________________

1. To supply blood to the musculature of heart.

2. To remove deoxygenated blood from intestines.

3. To supply oxygenated blood to the thymus.

4. To carry blood from the intestines to the liver for glycogen formation.

Q.

Identify the labelled parts depicted in the image .

1. 1 Inferior vena cava, 2. Aorta, 3. Hepatic portal vein

2. 1. Aorta, 2. Hepatic portal vein, 3. Inferior vena cava

3. 1. Aorta, 2. Hepatic portal vein, 3. Inferior vena cava

4. 1. Hepatic portal vein, 2. Aorta, 3. Inferior vena cava

Q. Which part of the heart leads the blood to dorsal aorta?

1. Right atria
2. Right ventricle
3. Left atria
4. Left ventricle
5. Pulmonary vein

Q. Write notes on the working of the heart of the man with the help of a neat labelled diagram. Add a note on double circulation.