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HEALTH PRESENTATION

kovinram070

Created on July 5, 2023

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Transcript

8.2 Mechanism of Breathing

Compare and Contrast Breathing Mechanism In Humans and Animals

BY: KOVIND RAM A/L KUMARESAN & ROSHANRAJ A/L SARAVANAN

TO: PN. SHARIFAH MONA

SIMILARITIES

Muscular structure

Breathing mechanism

Humans and animals have special muscular structures to expand and contract the respiratory cavity

The breathing mechanism involves changes in the volume and pressure in the respiratory cavity.

Differences between breathing mechanisms of insects, fish, frogs and humans

Characteristics

Insects

Fish

Frogs

Humans

Mouth and operculum

Respiratory aperture

Spiracle
Nostrils
Nostrils
Diaphragm, ribcage and intercostal muscles
Operculum and muscular floor of buccal cavity
Muscular buccopharyngeal wall

Structure that helps breathing

Thorax, abdomen
Assisted by the contraction and relaxation of the intercostal muscles and the diaphragm muscles as well as the movement of the rib cage upward and outward, and also downward and inward
Assisted by movements of the floor of the buccal cavity and operculum
Assisted by the contraction and relaxation of abdominal muscles
Assisted by the rapid movement of the buccopharyngeal cavity floor and elasticity of the lungs

Breathing mechanism