Question

write a note on part of respiratory system​

Answer 1

Answer:

The respiratory system, also called the gas exchange system, is the body getting rid of carbon dioxide and taking in oxygen. Carbon dioxide, a waste product, goes out of the body. Oxygen, which the body needs, comes in. The lungs are the main organ to do this.

Answer 2

➠ AnSwer :-

➝ human respiratory system :

• We have a pair of external nostrils opening out above the upper lips. It leads to a nasal chamber through the nasal passage.
• The nasal chamber opens into nasopharynx, which is a portion of pharynx, the common passage for food and air.
• Nasopharynx opens through glottis of the larynx region into the trachea.
• Larynx is a cartilaginous box which helps in sound production and hence called the sound box.
• During swallowing glottis can be covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx.
• Trachea is a straight tube extending up to the mid-thoracic cavity, which divides at the level of 5th thoracic vertebra into a right and left primary bronchi.
• Each bronchi undergoes repeated divisions to form the secondary and tertiary bronchi and bronchioles ending up in very thin terminal bronchioles.
• The tracheae, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings.
• Each terminal bronchiole gives rise to a number of very thin, irregular- walled and vascularised bag-like structures called alveoli.