function of respiratory system


Respiratory System

Respiratory system consisting of specific organ and structure used for or participate exchange of gas.

Respiratory system is the set of organs that allow to breathe and exchange oxygen and carbon dioxide throughout the body.

Types of Respiration

There are three types of respiration -

1. Cellular Respiration

Cellular respiration is the process by which the chemical energy of "food" molecules is released in the form of ATP for use by all the energy consuming activities of the cell.

For exchange of material required energy. Most of steps of cellular respiration take place in the mitochondria.

Cell- (energy consumed) -tissue-energy required-blood 

2. External Respiration

At the level of lungs (alveoli)

External respiration which occurs in the lungs, is the exchange of gases (O2, CO2) between the blood and the lung.

Oxygen from lungs diffuses into blood and carbondioxide and water vapour diffuse from the blood into the lungs.

External respiration occurs in lungs where oxygen diffuses the blood and CO2 diffuses into alveolar air.

3. Internal Respiration

At the level of the rest of the body

Exchange of gases between blood and tissue.

It is the exchange of gases in the body tissue CO2 from the body cells is exchanged for O2 from the blood. (Inside body-tissue and blood)

Internal respiration occurs in the metabolizing tissue, where oxygen diffuses out of the blood and CO2 diffuses out of the cell.

Function of Respiratory System

1. Exchange of gases O2 and CO2

2. Respiratory track; site of sound production

3. Breathing (movement of air)

4. Olfactory assistance (sense of smell)

4. Respiratory track, filters, warms and humidify inhale air

5. Laughing, crying, sneezing; activities of Respiratory System

6. Cellular respiration

7. External respiration

8. Internal respiration

10. Regulation of body temperature and acid base balance

11. Protection (cleaned particle of dust, microbes) stick to the mucus, cilia, coughing

12. Helps to maintain Haomeostasis by regulating pH of blood and other body fluids

13. Pulmonary ventilation

14. Assist in abdominal compression during urination, defecation and child birth

Post a Comment