Heart

Q. Blood vessels which carry the blood away from the heart are known as _____.

1. ventricles
2. atria
3. veins
4. arteries

Q.

Why does blood flow with high pressure and speed in the arteries and not in the veins?

Q.

One complete contraction and relaxation of the heart is called

1. Diastole

2. Joint diastole

3. Systole

4. Cardiac Cycle

Q. Warm blooded animals have a chambered heart.

1. three
2. two
3. four
4. five

Q. Which chamber of the heart pumps the oxygenated blood into the body parts?

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

Q.

Which chamber of the human heart has the thickest muscular wall?

1. Left atrium

2. Right ventricle

3. Left ventricle

4. Right atrium

Q.

A human heart is enclosed in a double-walled sac called pericardium.

1. Pleura
2. Pericardium

Q.

List the valves present in the heart

Q. valve present is between right atrium and right ventricle.

1. Bicuspid
2. Semilunar
3. Tricuspid

Q.

Why is blood flow unidirectional in the human heart?

Q.

Sinus venosus of the frog is formed by the union of

1. Two precavals and two post cavals

2. One precaval and two post cavals

3. One precaval and one post caval

4. Two precavals and one post caval

Q.

The pacemaker is situated in the heart

1. in the walls of right atrium

2. on the interauricular septum

3. on the interventricular septum

4. in the wall of left atrium

Q.

Which organ pumps blood throughout the human body?

1. Heart

2. Blood vessels and capillaries

3. lungs

4. Kidneys

Q. Sac-like structures present in the lungs are called .

1. trachea
2. alveoli
3. bronchioles

Q.

The muscular layer present in the wall of the heart is called as__________

1. 

2. 

3. 

4. 

Q.

The blood vessel that supplies blood to the heart is known as __.

Q.

State the main function of the following:

Sinoatrial node

Q.

Why is heart considered as an organ? Why not tissue

Q.

In a normal healthy person, the heart beats 68-72 times per minute.

1. True
2. False

Q. One complete contraction and relaxation of the heart is known as:

1. Systole
2. Diastole
3. Cardiac cycle
4. Joint diastole

Q.

Heart is a muscular organ made of __________ muscles

1. Both A and B

2. B. Skeletal

3. A. Cardiac

4. C. Smooth

Q. Match valves to parts of the heart it connects. (RA - Right Atria; RV - Right Ventricle; LV - Left ventricle)

1. Heart & aorta
2. LA & LV
3. RA & RV

Q.

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

Q. Human heart has ___ chambers.

1. 2

2. 3

3. 4

4. 5

Q. Which of the following are the parts of the circulatory system in a human being?

1. Arteries
2. Veins
3. All of the above
4. Heart

Q. The lower chambers of the heart which pump blood with maximum pressure are called _________ .

1. ventricles
2. atria
3. capillaries
4. veins

Q. Explain the working and structure of human heart

Q. Which among the following statement is not true about the heart?

1. The heart is situated between the lungs.
2. Heart is covered by a triple walled membranous covering.
3. The heart is made up of involuntary muscles.
4. The size of the heart is equal to one's own fist.

Q. Choose the incorrect statement.

1. Atria are the blood-receiving chambers.
2. Walls of atria are thicker than ventricles.
3. Atria are thin.
4. None of these

Q.

State the exact location of the following structures-

Bicuspid valve