Which of the following is the part of the thoracic chamber
1. ribs and vertebral column
2. diaphragm
3. sternum
4. All of these

Which of the following is true for diaphragm except
(1)muscular structure

(2)found in all vertebrates

(3)It helps in breathing, urine elimination, and child birth

(4)It is dome shaped in normal condition

Which of the following is true
(1)Right lungs is greater than left lungs

(2)structural and functional unit of lungs is alveoli

(3)lungs are non muscular

(4)All of the above

How many of the following are steps of respiration
Pulmonary ventilation, diffusion, transport of gases, energy production,
(1)4

(2)3

(3)2

(4)1

In the process of respiration how many times the process of diffusion takes place in respiration
1. 4
2. 3
3. 2
4. 1

During inspiration which of the following events takes place
1. Diaphragm and external intercostal muscles contracts
2. Diaphragm and internal intercostal muscles relax
3. Intra Pleural pressure is less than atmospheric pressure
4. Both A and C

During expiration which of the following events takes place
(1)Diaphragm and external intercostal muscles contracts

(2) Diaphragm and external intercostal muscles relax

(3)Inter Pleural pressure is less than atmospheric pressure

(4)Both A and C

During inspiration there is __________pressure in the lungs with respect to atmospheric pressure.
(1)positive

(2)negative

(3)neither positive nor negative

(4)All of these

Which of the following is true for inspiration
(1)thoracic chamber volume increases

(2)Diaphragm contracts

(3)pulmonary volume increases

(4)All of these

Which of the following is true for expiration except
(1) thoracic chamber volume reduces

(2)Diaphragm contracts

(3)pulmonary volume decreases

(4)All of these