Cardiac Output

Q. Trachea is a main supporting structure of the respiratory system. Justify the statement.

Q.

Introducing weakened germs to stimulate the production of antibodies is called _________

1. inflammation

2. vaccination

3. phagocytosis

4. diapedesis

Q.

Taking example of heart beat , justify the antagonistic action of the sympathetic and the parasympathetic nerves.

(RESPECTED SIR , REQUEST YOU TO EXPLAIN ALSO )

Q. How does parasympathetic neural signal affect the working of the heart?

1. Reduce both heart rate and cardiac output
2. Heat rate is increased without affecting the cardiac output
3. Both heart rate and cardiac output increase
4. Heart rate decreases but cardiac output increases

Q.

Cardiac output is defined as

1. heart rate times stroke volume

2. Peripheral resistance times heart rate

3. Blood pressure minus peripheral resistance

4. Blood pressure times peripheral resistance

Q.

Doctors use stethoscope to hear the sound produced during each cardiac cycle. The second sound is heard when:

1. AV node receives signal from SA node

2. Ventricular walls vibrate due to the gushing of blood from atria.

3. AV valves open up

4. Semilunar valves close down after the blood flows into vessels from ventricles.

Q. How does parasympathetic neural signal affect the working of the heart?

1. Heat rate is increased without affecting the cardiac output
2. Both heart rate and cardiac output increase
3. Heart rate decreases but cardiac output increases
4. Reduce both heart rate and cardiac output

Q.

Identify the structure in the image.

1. Diaphragm
2. Trachea
3. Alveoli
4. Bronchi

Q. When the pulmonary valve closes, ventricular ___________ takes place leading to a _____ sound.​

1. contraction, dub
2. relaxation, dub​
3. contraction, lub​
4. relaxation, lub​

Q. The volume of blood present in an adult human is_____

1. 1 litre
2. 2 litres
3. 5 litres
4. 10 litres

Q. The stroke volume multiplied by the ___ gives cardiac output

1. cardiac cycle
2. pumping efficiency
3. blood pressure
4. heart rate

Q.

Doctors use stethoscope to hear the sound ; Produced during each cardiac cycle. The second sound is heard when:

1. Ventricular walls vibrate due to the gushing of blood from atria.

2. Semilunar valves close down after the blood flows into vessels from ventricles.

3. AV valves open up

4. AV node receives signal from SA node

Q.

The cardiac output is measured by _____.

1. Heart rate minus stroke volume

2. Heart rate plus stroke volume

3. Heart rate multiplied by stroke volume

4. Heart rate divided by stroke volume

Q.

Which among the following is correct during each cardiac cycle?

1. The volume of blood received by the aorta and pulmonary artery is different​
2. The volume of blood received by each atrium is different​
3. The volume of blood pumped out by the right and left ventricles is same​
4. The volume of blood pumped out by the right and left ventricles is different​

Q. Trachea is commonly referred to as the _____ .

1. larynx
2. food pipe
3. vocal cord
4. wind pipe

Q. Brain depends on blood for the supply of :

1. Oxygen and ATP.
2. Oxygen and Carbon dioxide.
3. Oxygen and Glucose.
4. ATP and Glucose.