breathing

Question 1

What is the common passage for food and air

Answer 1

Pharynx

Question 2

The thin flap which prevents food from entering into the windpipe

Answer 2

Epiglottis

Question 3

Lower invertebrates like sponges or coelenterates use

Answer 3

Simple diffusion.

Question 4

Fish use

Answer 4

Gills

Question 5

terrestrial organisms use

Answer 5

Lungs

Question 6

Aquatic arthropods and molluscs use

Answer 6

Gills

Question 7

Insects breathe through

Answer 7

trachea

Question 8

earthworms breathe through

Answer 8

Skin or cuticle

Question 9

a cartilaginous box which helps in sound

production and hence called the soundbox.

Answer 9

larynx

Question 10

We have two lungs which are covered by

Answer 10

Double layered pleura

Question 11

Conducting part is from…… to………..

Answer 11

External nostrils to terminal bronchioles

Question 12

alveoli and their ducts form the

Answer 12

respiratory or exchange part

Question 13

The thoracic chamber is formed by

Answer 13

dorsally by the vertebral column,
ventrally by the sternum,
laterally by the ribs and
on the lower side by the dome-shaped diaphragm.

Question 14

the breast bone is also called

Answer 14

Sternum

Question 15

Inspiratory volume is around

Answer 15

2500-3000 ml

Question 16

What helps in bringing the pressure gradient

Answer 16

intercostal muscles and diaphragm

Question 17

Expiratory Reserve volume is around

Answer 17

1000ml- 1100ml

Question 18

Define tidal volume

Answer 18

the volume of air inspired or expired during normal respiration. approx 6000-8000 ml per min.

Question 19

The volume of air involved in breathing movements can be estimated by

Answer 19

spirometer

Question 20

Define residual volume

Answer 20

The volume of air residing in the lungs after a forceful respiration. approx. 1100-1200 ml

Question 21

inspiratory capacity is

Answer 21

The volume of air a person can inspire after a normal expiration. it is IRV+TV

Question 22

Functional residual capacity is

Answer 22

The total volume of air present in the lungs at the end of a normal expiration. RV+ERV

Question 23

Vital capacity is

Answer 23

The additional volume of air that can be inspired after forced expiration. IRv+ERV+TV

Question 24

Total lung capacity

Answer 24

The total volume of air that can be accommodated in the lungs after a forced inspiration. VC+ RV

Question 25

The primary site where the exchange of gases takes place

Answer 25

Alveoli

Question 26

The three layers of the alveoli are

Answer 26

squamous epithelium, endothelium, basement membrane.