Question

matching question

match the head and jaw skeletal muscles with their actions.

instructions

masseter

digastric

platysma

pulls the corners of the mouth down

opens the mouth

closes the jaw

Explanation:

Identify the muscles and their anatomical functions

We are asked to match three head and neck muscles with their primary actions:

• Masseter: A powerful muscle of mastication. Its primary action is elevating the mandible to close the jaw.
• Digastric: A muscle located under the jaw. It acts to depress the mandible, which opens the mouth.
• Platysma: A broad, superficial sheet of muscle on the neck. It pulls down the lower lip and the corners of the mouth.

Match each muscle to its corresponding action

• Masseter matches with Closes the jaw.
• Digastric matches with opens the mouth.
• Platysma matches with Pulls the corners of the mouth down.

Answer:

Muscle	Action
Digastric	opens the mouth
Platysma	Pulls the corners of the mouth down