Internal Structure of Heart

Q. The heart is covered by a double layered membrane called ____.

1. pericardial membrane
2. myocardial membrane
3. mesocardial membrane
4. peripheral membrane

Q.

Deoxygenated blood is carried by

a) pulmonary veins

b) anterior vena cava

c) pulmonary arteries

1. a) and b)

2. a) b) and c)

3. b) and c)

4. a) and c)

Q. 12.a) Name the blood vessel that brings deoxygenated blood to human heart.
b) Which chamber of human heart receives deoxygenated blood?
c) Explain how deoxygenated blood from this chamber is sent to lungs for oxygenation. (3)

Q.

How does blood enter and leave the heart?

Q.

The ______ cavae are large veins which carry deoxygenated blood from the body to the heart.

Q. 'X' collects oxygenated blood from artery and returns deoxygenated blood to vein. Identify 'X'.

1. Venacava
2. Ventricles
3. Valves
4. Capillaries

Q. The valve which prevents the backward flow of blood from left ventricle to the left atrium is the:

1. Pulmonary semilunar valve ​
2. Bicuspid valve
3. Tricuspid valve
4. Aortic semilunar valve​

Q. 'P' in the heart have thicker muscular walls than 'Q'. Also, 'R' ensure that blood does not flow backwards when the 'P' or 'Q' contract. Identify 'P', 'Q' and 'R'.

1. P: Atria, Q: Ventricles, R: Valves
2. P: Ventricles, Q: Blood vessels, R: Atria
3. P: Ventricles, Q: Atria, R: Valves
4. P: Blood Vessels, Q: Atria, R: Valves

Q. Draw the diagram of human heart and label

Q. Is blood vessel means blood capillary ?

Q. Which chamber of the human heart receives oxygenated blood?

1. Right ventricle
2. Left atrium
3. Left ventricle
4. Right atrium

Q.

Name the valve present between right auricle and right ventricle.

Q. are present to prevent backflow of blood in the heart.

1. Valves
2. Veins
3. Arteries
4. Atrium

Q. In the human heart, oxygenated and deoxygenated blood are separated.

1. True
2. False

Q.

Name the membrane that insulates the heart?

Q. The valve which is present between the right auricle and right ventricle is .

1. Tricuspid
2. Aortic
3. Bicuspid

Q. Which is the first chamber of the heart to receive oxygenated blood?

1. Right ventricle
2. Left atrium
3. Right atrium
4. Left ventricle

Q. The right and left atrium have chambers with ______.

1. spiral walls
2. thick walls
3. thin walls
4. spongy walls

Q.

Out of the four chambers of heart, which of the following will contract together?

1. A and B

2. B and D

3. C and D

4. A and C

Q. Identify the largest blood vessle through which the blood is pumped from the heart to all the body parts.

1. 
2. 
3. 
4. 

Q.

Fill in the blanks:​
(xi) The largest artery in human body is called
​