Ch 14 Breathing last 10 yrs Flashcards
- Select the correct events that occur during inspiration
(2020) - Contraction of diaphragm
- Contraction of external inter-costal muscles
- Pulmonary volume decreases
- Intra pulmonary pressure increases
a. (3) and (4)
b. (1), (2) and (4)
c. Only (4)
d. (1) and (2)
d. (1) and (2)
- Contraction of diaphragm
- Contraction of external inter-costal muscles
- Lungs do not collapse between breaths and some air always
remains in the lungs which can never be expelled because:
(2016 - II)
a. There is a positive intrapleural pressure
b. Pressure in the lungs is higher than the atmospheric
pressure.
c. There is a negative pressure in the lungs.
d. There is a negative intrapleural pressure pulling at the
lung walls
d. There is a negative intrapleural pressure pulling at the
lung walls
- The Total Lung Capacity (TLC) is the total volume of air
accomodated in the lungs at the end of a forced inspiration.
This includes: (2020-Covid)
a. RV; ERV; IC and EC
b. RV; ERV; VC (Vital Capacity) and FRC (Functional
Residual Capacity)
c. RV (Residual volume); ERV (Expiratory Reserve
Volume); TV (Tidal Volume); and IRV (Inspiratory
Reserve Volume)
d. RV; IC (Inspiratory Capacity); EC (Expiratory Capacity);
and ERV
c. RV (Residual volume); ERV (Expiratory Reserve
Volume); TV (Tidal Volume); and IRV (Inspiratory
Reserve Volume)
- 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?
(2019)
a. 1500 mL
b. 1700 mL
c. 2200 mL
d. 2700 mL
a. 1500 mL
- Match the items given Column-I with those in Column-II and
select the correct option given below (2018)
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
a. A-iii B-ii C-i D-iv
b. A-iii B-i C-iv D-ii
c. A-i B-iv C-ii D-iii
d. A-iv B-iii C-ii D-i
b. A-iii B-i C-iv D-ii
Tidal Volume (500 -550 mL)
Inspiratory Reserve Volume (2500-3000mL)
Expiratory Reserve Volume (1000-1100 mL)
Residual Volume (1100-1200 mL)
- Lungs are made up of air-filled sacs the alveoli. They do
not collapse even after forceful expiration, because of:
(2017-Delhi)
a. Residual Volume
b. Inspiratory Reserve Volume
c. Tidal Volume
d. Expiratory Reserve Volume
a. Residual Volume
- Select the favourable conditions required for the formation
of oxyhaemoglobin at the alveoli. (2021)
a. Low pO2, high pCO2, more H+, higher temperature
b. High pO2, high pCO2, less H+, higher temperature
c. Low pO2, low pCO2, more H+, higher temperature
d. High pO2, low pCO2, less H+, lower temperature
d. High pO2, low pCO2, less H+, lower temperature
- The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are: (2021)
a. pO2 = 40 and pCO2 = 45
b. pO2 = 95 and pCO2 = 40
c. pO2 = 159 and pCO2 = 0.3
d. pO2 = 104 and pCO2 = 40
d. pO2 = 104 and pCO2 = 40
- Identify the wrong statement with reference to transport of
oxygen. (2020)
a. Partial pressure of CO2 can interfere with O2 binding with
haemoglobin.
b. Higher H+ conc. in alveoli favours the formation of
oxyhaemoglobin.
c. Low pCO2 in alveoli favours the formation of
oxyhaemoglobin.
d. Binding of oxygen with haemoglobin is mainly related to
partial pressure of O2.
b. Higher H+ conc. in alveoli favours the formation of
oxyhaemoglobin.
- The partial pressure of oxygen in the alveoli of the lungs is:
(2016 - II)
a. Less than that in the blood
b. Less than that of carbon dioxide
c. Equal to that in the blood
d. More than that in the blood
d. More than that in the blood
- Reduction in pH of blood will: (2016 - I)
a. Reduce the rate of heart beat
b. Reduce the blood supply to the brain
c. Decrease the affinity of hemoglobin with oxygen
d. Release bicarbonate ions by the liver
c. Decrease the affinity of hemoglobin with oxygen
- When you hold your breath, which of the following gas
changes in blood would first lead to the urge to breathe?
(2015 Re)
a. Rising CO2 concentration
b. Rising CO2 and falling O2 concentration
c. Falling O2 concentration
d. Falling CO2 concentration
a. Rising CO2 concentration
- Approximately seventy percent of carbon-dioxide absorbed
by the blood will be transported to the lungs: (2014)
a. As carbamino-haemoglobin
b. As bicarbonate ions
c. In the form of dissolved gas molecules
d. By binding to R.B.C.
b. As bicarbonate ions
- Match the following columns and select the correct option:
(2020-Covid)
Column-I Column-II
- Pneumotaxic Centre (i) Alveoli
- O2 Dissociation curve (ii) Pons region of brain
- Carbonic Anhydrase (iii) Haemoglobin
- Primary site of exchange of gases (iv) R.B.C.(1) (2) (3) (4)
a. (ii) (iii) (iv) (i)
b. (iii) (ii) (iv) (i)
c. (iv) (i) (iii) (ii)
d. (i) (iii) (ii) (iv)
a. (ii) (iii) (iv) (i)
- Pneumotaxic :Centre Pons region of brain
- O2 Dissociation curve: Hemoglobin
- Carbonic Anhydrase: R.B.C
- Primary site of exchange of gases: Alveoli
- Due to increasing air-borne allergens and pollutants, many
people in urban areas are suffering from respiratory disorder
causing wheezing due to (2019)
a. Benign growth on mucous lining of nasal cavity
b. Inflammation of bronchi and bronchioles
c. Proliferation of fibrous tissues and damage of the alveolar
walls
d. Reduction in the secretion of surfactants by pneumocytes.
b. Inflammation of bronchi and bronchioles
