Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Among the given statement : (1) larynx is larger in human males than in females (2) the air tube in mammals is called trachea (3) bifurcation of trachea is called bronchi (4) sound producing organ of human female is syrinxA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 1,2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: A
Solution :
Larynx : Until puberty there is little difference in the site of larynx in man and woman. Thereafter, it grows larger and becomes prominent in man, therefore, If called Adam's apple in man. The larynx leads into a long tube, the trachea or wind pipe bearing rings of hyaline cartilage which are incomplete posteriorly. These cartilaginous rings support the walls of f trachea and prevent its collapse during inspiration. At its lower end the trachea bifurcates into a pair of primary bronchi whir enter the right and left lungs. The walls of the bronchi are likewise supported by cartilaginous rings.
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