Identify and describe the function of the parts marked P, Q, R and S

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Pharynx, Larynx, Trachea, Bronchioles

Knee, Legs, Feet, Toes

Hand, Fingers, Thigh, Thorex

None of the above

answer is A.

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Detailed Solution

Concept:The respiratory system is a set of organs and napkins that help in breathing. The respiratory system includes the muscles that power our lungs. These factors work together to transport oxygen across the body while also removing waste feasts similar to carbon dioxide.
The given figure is the illustration of the mortal respiratory system, the name and function of the corridor marked are as follows-
P. Pharynx- The pharynx is the part of the throat that lies behind the mouth and nasal depression and above the oesophagus and trachea, which are the tubes that lead to the stomach and lungs. It can be set up in both invertebrates and pets, though the structure differs depending on the species.
Larynx – It protects the lower airways, stimulates respiration, and is essential for phonation. It's also known as the voice box, is an organ in the top of the neck that helps with breathing, sound product, and guarding the trachea from food aspiration. The range of the opening between the larynx and the pharynx is roughly 4 to 5 cm.
Q. Trachea- The trachea is a tube that carries air into the lungs, moistens and warms it as it moves through, and protects the respiratory face from foreign patches. The trachea is lined with a wettish mucous- membrane subcaste made up of cells with thin shaggy protrusions called cilia. It runs from the larynx to the two primary bronchi.
Bronchioles- Bronchioles are air passages inside the lungs that fan out from the bronchi like tree branches. The bronchi, bronchioles, and terminal bronchioles are a network of branching airways that transport air from the trachea to the alveolar tubes and alveoli, where gas exchange takes place.
Hence, option 1 is the correct answer

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