Respiratory system•Most of living things absorb O2. Carbon and Hydrogen provided by foodstuffs and through oxidation of foodstuffs produced heat and energy.

•The purpose of respiration is to take O2 and remove CO2. When O2 is taken into the body, it is carried in the blood stream to the various tissues. Where it is exchanged for CO2 which then returns in the blood stream.

.

Respiratory system•The respiratory system means getting O2 into the body and out CO2 from the body.

•The purpose of respiration is to take O2 and remove CO2. When O2 is taken into the body, it is carried in the blood stream to the various tissues. Where it is exchanged for CO2 which then returns in the blood stream.

.

Respiratory system•The Lungs is the main organ for the respiratory function.

.

Respiratory system•When an animal is breathing normally, it usually exchange only a part of the air which can hold in the lung this amount of air known as tidal air.

•If the deeper breath is taken the additional air is called complementalal air

•When additional air contain at the out side of the lung is called supplemental air

•The supplemental air and complemental air together is called vital capacity

.

Speed of Breathing•Generally larger animal breath more slowly than the small animal.

•Horse-----8-12/minutes•Cow 12-16/minutes•Pig 10-16/minutes•Sheep 12-20/minutes•Dog 15-30/minutes

•The rate speed of breathing is faster during rapid exercise,

.

Control of breathing•Breathing id controlled automatically by two means, nervous and chemical

•i). Nervous control: This consists of sensory nerves which completely control from the brain

•ii). Chemical control: This is determined by the levels of O2 and CO2 in the blood. When O2 level gets too low or CO2 too high the breathing of animal become too high

.

Control of breathing•Breathing id controlled automatically by two means, nervous and chemical

•i). Nervous control: This consists of sensory nerves which completely control from the brain

•ii). Chemical control: This is determined by the levels of O2 and CO2 in the blood. When O2 level gets too low or CO2 too high the breathing of animal become too high

.