A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
The poison apparatus is associated with specialized bands of three types of muscles, viz, digastric, sphenoterygoid, and anterior and posterior temporalis. During the contraction of the digastric muscle, the posterior ligament is relaxed and during the rotation of the squamosal bone, the fan-shaped ligaments are stretched to squeeze the wall of the poison gland. This makes the poison to come out of the poison gland through the poison duct and fang. Other types of muscle help in jaw movement.
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