Pre-Lab Questions Select the correct answer for each of the following questions:
Muscles of mastication are all inserted on the
a. mandible.
b. maxilla
c. tongue.
d. teeth.
Introduction :
The oval cavity present in the skull is called the mouth. The mouth consists of various parts like lips, jaws, teeth, and vestibule. The teeth are located in the socket present in the jaw. The teeth are involved in splitting food into smaller parts. The zone between the lips, cheeks, and teeth is called the vestibule.
Answer to Problem 1PL
Correct answer :
The correct answer is option (a) mandible.
Explanation of Solution
Explanation/justification for the correct answer :
Option (a) mandible. The mastication muscles originated from the skull that ends in the mandibles. The mandible is present in the lower jaw. At the time of contraction, jaw movements are allowed by these mastication muscles. The muscles involved in the mastication are inserted in the mandible. So, the correct answer is an option (a).
Explanation for incorrect answer :
Option (b) maxilla. The maxilla is the fixed bone that is present in the upper jaw. The two maxillary bones fused together to form the fixed maxilla. The front of the mouth consists of the hard palate in the upper jaw. So, this is an incorrect option.
Option (c) tongue. The muscular organ of the mouth called tongue involves in the process of mastication and swallowing. It plays an important role in the digestive system and contains gustatory receptors. So, this is an incorrect answer.
Option (d) teeth. The layers pulp, dentin, cementum, and enamel together form the teeth. Teeth are not muscular in nature. The teeth do not contain muscles for mastication. So, this is an incorrect answer.
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