is the second important cartilage of the larynx, is a valve which closes the
larynx during swallowing. It prevents the entering of food molecules into trachea.
a pair of membranes Inside the larynx cavity during the speech the vocal
cords vibrate and sound is produced because the air (exhaled air) leaving from the
lungs passes over the vocal cords
It is a cone shaped structure which is lined with mucous membrane and
located above the trachea. It consists of nine pieces of cartilages. These cartilages
are combined with each other by an elastic membrane. The most important piece
called Adam's apple and the second important cartilage is called epiglottis
is a chemical process which produces energy from food inside the living
cells. In this process, food is catabolized by oxygen and energy is produced from food
a small rooms located in the lungs have thin walls surrounded by a network of
blood capillaries . The exchange of gas between blood and environment occurs
through their wall
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