Tag: the mechanism of breathing

Questions Related to the mechanism of breathing

During which of the following activity the breathing rate is maximum?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Sleeping

  2. Jumping

  3. Writing

  4. None of the above

Show answer
Correct Option: B
Explanation:
Breathing rate is maximum in jumping. Because heart rate is faster during jumping which makes quicker pulse. The muscles need more oxygen and more energy at this time. As level of activity increases, breathing rate increases to bring more air into the lungs so that lungs can pump more oxygen into the blood.
So the correct answer is 'Jumping'

Which of the following process determines the breathing rate?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Inhalation

  2. Exhalation

  3. Respiration

  4. Both A and B

Show answer
Correct Option: D
Explanation:
Breathing rate is defined as the number of times a person breathes per minute. A breath counts as one exhale and inhale. The total no. of inhale and exhale in one in one minute gives breathing rate.
So the correct answer is 'Both A and B'.

Increased breathing rate involves

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Greater production of energy

  2. Greater amount of oxygen

  3. Greater blood flow

  4. Both A and B

Show answer
Correct Option: D
Explanation:
Breathing rate is defined as the no. of times a person breathes in a minute. Breathing rate increases during physical exercise. During that time the body requires a higher amount of oxygen and metabolism. 
So the correct answer is 'Both A and B'.

Breathing rate increase during physical exercise because

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Cells require extra oxygen

  2. Cells require extra energy

  3. Cells require carbon dioxide

  4. Both A and B

Show answer
Correct Option: D
Explanation:
Breathing rate is defined as the no. of times a person breathes in a minute. Breathing rate increase during physical exercise because at that time body demands a high amount of oxygen in the blood for metabolism. The body requires extra energy to carry out muscular activity.
So the correct answer is 'Both A and B'.

Breathing rate ........... during physical exercise.

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Increases

  2. Decreases

  3. Remains same

  4. None of the above

Show answer
Correct Option: A
Explanation:
Breathing rate is defined as the no. of times a person breath in one minute. It increases during physical exercise just to fulfill the increased demand of oxygen in the body because of the physical activity and increased metabolic rate.
So the correct answer is 'Increases'.

Which of the following activities is characterised by minimum breathing rate?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Sleeping

  2. Washing of clothes

  3. Cleaning of floor

  4. Dancing

Show answer
Correct Option: A
Explanation:
During sleeping, the body has the least activities to carry out, it does not require a high amount of oxygen. So it has minimum metabolism and hence minimum breathing rate.
So the correct answer is 'Sleeping'.

Breathing rate can be measured by

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Heartbeat count

  2. Amount of blood

  3. Haemoglobin count

  4. None of the above

Show answer
Correct Option: A
Explanation:
The breathing rate can be measured by the heartbeat count. This is because the heart is connected to the lungs via the pulmonary artery. In a healthy person with the normal heartbeat, 60-100 per minute will have 12-20 breathes in a minute.
So the correct answer is 'Heartbeat count'.

Breathing rate increases which of the following value?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Pulse rate

  2. Metabolic rate

  3. Exhalation

  4. All of the above

Show answer
Correct Option: D
Explanation:
The breathing rate is no. of times a person breath in one minute. Breathing rate increases when there is high pulse rate and urgent requirement of oxygen in blood. due to which metabolic rate increases in the body. The exhalation also increases to pass out the carbon dioxide out of the body in high amount to increase oxygen concentration in the body.
So the correct answer is 'All of the above'.

Which component of air is exhaled by the body?

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Nitrogen

  2. Oxygen

  3. Carbon dioxide

  4. Hydrogen

Show answer
Correct Option: C
Explanation:

Carbon dioxide is a waste product of the body. It is majorly exhaled out by the body so that it will reduce the competition to gets bind to the haemoglobin with oxygen. It is saturated with water vapours.

So the correct answer is 'Carbon dioxide'.

During inhalation and exhalation which of the following is seen

evs respiration in organism human respiration the mechanism of breathing breathing and its movements

  1. Ribs move up and outward, diaphragm moves down

  2. Ribs move down and inwards, diaphragm moves up

  3. Ribs move down and outwards, diaphragm moves down

  4. Ribs move up and inwards, diaphragm moves down

Show answer
Correct Option: A,B
Explanation:
During inhalation, the external intercostal muscles contract and lifts ribs outward, while diaphragm become flat and moves down thereby increases the volume of thoracic cavity.
During exhalation, the external intercostal muscles return the diaphragm and ribs to their normal thoracic volume. Ribs moves down and inwards while diaphragm moves up.
So the correct answer is Both A and B'.