SUBMITTEDBY:

AMINA NAZAR NATURAL SCIENCE

REG NO:18114383001

SUBMITTED TO: SOYA .P

(LECTURER OFNATURAL SCIENCE)

POWER POINT PRESETATION

ON:

RESPIRATORY SYSTEM.

The respiratory system is a biological system consisting of specific organs and structures used for the process of respiration in an organism.

INTRODUCTION

DIFFERENT PARTS OF RESPIRATORY

SYSTEM

The respiratory system extends from the nostrils to the lungs The air enters into the

respiratory track through NOSTRILS .

The minute hairs and mucus in the nostrils prevent the entry of dust and harmful germs.

Nostrils are followed by the NASAL CANAL that opens into pharynx.

The trachea and oesophagus start from the PHARYNX.

The EPIGLOTIS seen above the larynx prevents food particle from entering the trachea.

The TRACHEA is made up of incomplete C-shaped cartilaginous rings.

The trachea divides into two branches calledBRONCHI.

.

The bronchi that enter the lungs divide into smaller branches called

BRONCHIOLES. Each bronchioles enters into a

set of ALVEOLI.The alveoli increase the surface

area of the lungs. Lungs are protected in a double layered membrane called PLEURA