Respiratory System

Question 1

Study of lungs?

Answer 1

Pulmonology

Question 2

Function of epiglottis?

Answer 2

Prevents food and water from entering the lungs during swallowing

Question 3

The exchange of respiratory gas takes place in which part of lungs?

Answer 3

Alveoli

Question 4

Exchange of gases occure by the process of?

Answer 4

Simple difusion

Question 5

Respiratory rate of a healthy human?

Answer 5

12-16/minute

Question 6

Device used to measure the volume of air involved in breathing?

Answer 6

Spirometer

Question 7

Percentage of oxygen in the inhaled air?

Answer 7

21%

Question 8

Percentage of CO2 in the inhaled air?

Answer 8

0.04%

Question 9

Percentage of CO2 in the exahaled air?

Answer 9

4%

Question 10

Percentage of oxygen in the exahaled air?

Answer 10

15%

Question 11

Tidal volume?

Answer 11

500ml

Question 12

Residual volume?

Answer 12

1100-1200 ml

—»remaining volume of air in lungs after a forcefull exhale

Question 13

Vital capacity?

Answer 13

Maximum volume of air that can exhale after a inhale

—–»3L-5L

Question 14

No. Of O2 molecule that a haemoglobin molecule can carry?

Answer 14

4

Question 15

Transportation of CO2 occure mainly through?

Answer 15

In the form of bicarbonate ions(70%)

2.in the form of carbamino-haemoglobin (20-25%)

3.through blood plasma(7%)

Question 16

The no. Of ATP liberated from one glucose molecule as a result of cellular respiration?

Answer 16

30

Question 17

Two types of cellular respirations are?

Answer 17

1.glycolisis/EMP pathway

2.krebs cycle

Question 18

Glycolysis?

Answer 18

—>glucose under goes partial decomposition in the absence of air to form two molecules of pyruvic acid

—->occurs in the cytoplasm of the cell

—>no. Of ATP s formed during glycolisis —2

Question 19

Krebs cylcle?

Answer 19

—>the 2 pyruvic acid molecule formed during glycolisis further undergo decomposition and forms CO2,H20 and 28 ATP molecules.

—->occurs within mitochondria in the presence of air