EASY
Earn 100

The largest quantity of air that can be expired after a maximum inspiratory effort is

50% studentsanswered this correctly

Important Questions on Breathing and Respiration

HARD
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes

An adult mammal with 50 kg body weight has the following functional parameters of its lungs. Inspiratory reserve volume =40 ml/kg body weight; Expiratory reserve volume =15 ml/kg body weight; Vital capacity =60 ml/kg body weight; Breathing rate =20/min.

The volume (in litre) of air that its lungs displace in 24 hours is-

EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
After forceful inspiration, the amount of air that can be breathed out with maximum forced expiration is equal to
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Match the items given in Column I with those in Column II and select the correct option given below:
 
  Column – I   Column – II
a. Tidal volume i. 2500 – 3000 mL
b. Inspiratory Reserve volume ii. 1100 – 1200 mL
c. Expiratory Reserve volume iii, 500 – 550 mL
d. Residual volume iv. 1000 – 1100 mL
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
The maximum volume of air a person can breathe in after forced expiration is called
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Lungs does not collapse between breaths and some amount of air will always remain in the lungs which can never be expelled because,
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes

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>Respiratory Volumes
Vital capacity of lung is ______ .
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Given that tidal volume is 600 ml, inspiratory reserve volume is 2500 ml, and expiratory reserve volume is 800 ml, what is the value of vital capacity of lung ?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
The amount of air that is left behind in lungs after expiratory reserve volume has been exhaled is
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Match the following related to respiratory volumes and capacities.
Column I Column II
i Tidal volume a 2500 to 3000 ml of air
ii Inspiratory reserve volume b 1000 ml of air
iii Expiratory reserve volume c 500 ml of air
iv Residual volume d 3400 to 4800 ml of air
v Vital capacity e 1200 ml of air
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
The Total Lung Capacity(TLC) is the total volume of air accomodated in the lungs at the end of a forced inspiration. This includes:
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Lungs are made up of air-filled sacs the alveoli. They do not collapse even after forceful expiration, because of:
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Listed below are four respiratory capacities (i-iv) and four jumbled respiratory volumes of a normal human adult:  

 
  Respiratory capacities           Respiratory volumes
(i) Residual volume      (a) 2500 mL
(ii) Vital capacity            (b) 3500 mL
(iii) Inspiratory reserve volume      (c) 1200 mL
(iv) Inspiratory capacity                  (d) 4500 mL

Which one of the following pairs of capacities and volumes is matched correctly with each other?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Residual volume is:
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
What is vital capacity of our lungs ?
MEDIUM
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
Read the following statements.

a) High H+ concentration and higher temperature are favourable for dissociation of oxygen from oxyhaemoglobin.

b) Partial pressure of oxygen in alveoli is higher than in the tissue.

c) The maximum volume of air a person can breathe in after a forced expiration is vital capacity.

d) In alveoli, low pCO2 and high pO2 favour dissociation of CO2 from carbaminohaemoglobin.

How many of the above statements are correct?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
If a person exhales out forcefully by applying all his efforts, what will the pulmonary volume inhaled by him immediately under normal condition without applying any extra effort?
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
The vital capacity of human lungs is equal to
EASY
Biology>Human Anatomy and Physiology-I>Breathing and Respiration>Respiratory Volumes
All of the following options are correct except::-

i. TLC = VC + RV

ii. VC = ERC + IRV

iii. VC = IRC + ERV

iv. RV = TLC - ERV + TV + IRV