MEDIUM
Earn 100

Assertion: Inspiration is an active process.

Reason: It takes place by the contraction of muscles of diaphragm and external intercostal muscles.

The correct option among the following is

100% studentsanswered this correctly

Important Questions on Breathing and Respiration

MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Explain the mechanism of inspiration and expiration.
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Which is the correct sequence of the air passage in man?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Write the steps of expiration steps in human being.
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Draw a labelled diagram of the mechanism of inspiration and expiration.
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Inspiratory reserve volume (IRV) is normally between _____.
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
A person suddenly starts coughing while swallowing food. This coughing would have been due to improper movement of
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans

Assertion (A): Biconcave shape of mammalian RBC facilitates gas exchange.

Reason (R): Biconcave shape provides a high surface to volume ratio.

EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
The maximum number of oxygen molecules that can bind to one molecule of hemoglobin is:
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
If you exhale multiple times into a conical flask containing lime water through a single inlet fixed through a stop cork, lime water will?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
The atmospheric pressure is 760 mm Hg at the sea level. Which of the following ranges is nearest to the partial pressure of CO2 in mm Hg?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Human fetal hemoglobin differs from the adult hemoglobin in that it has:
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans

Match the following respiratory capacities and respiratory volumes of a normal human adult?

Respiratory capacities Respiratory volumes
i) Residual volume a)  2800 mL
ii) Vital capacity b)  3000 mL
iii) Inspiratory reserve volume c)  1100 mL
iv) Inspiratory capacity d)  4000 mL

 

EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Which of the following factors are favourable for the formation of oxyhaemoglobin in the alveoli human lungs?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Which of the following is not the function of conducting part of respiratory system?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans

Select the favourable conditions required for the formation of oxyhaemoglobin at the alveoli.

EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
The process in which atmospheric air with 21% of O2 is drawn in and alveolar air rich in CO2 is sent out is called        
HARD
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
When does the increase in the volume of thoracic chamber take place in the dorsoventral axis? 
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans

Select the correct events that occur during inspiration.

(a) Contraction of diaphragm
(b) Contraction of external intercostal muscles
(c) Pulmonary volume decreases
(d) Intrapulmonary pressure increases

MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Which of the following is true with respect to respiratory volumes?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Mechanism of Breathing in Humans
Read the following statements (A – D).

(A) The movement of air in and out of the lungs is carried out by creating a pressure gradient between the lungs and atmosphere.
(B) Inspiration can occur if the pressure within the lungs is more than the atmospheric pressure.
(C) Expiration takes place when the intrapulmonary pressure is lesser than the atmospheric pressure.
(D) The diaphragm and a specialized set of intercostal muscles in between the ribs help in the generation of such pressure gradients for breathing.

How many of the following statements are correct?