It is useful to organize muscles into groups with similar properties. Which of the following muscle group would be most likely to elevate the hyoid bone?
All skeletal muscles have nerve fibers that control contraction. Which of the following muscles is innervated by the trigeminal nerve (cranial nerve V)?
Facial expressions are important social clues in humans. Of the following muscles which of them is involved in frowning?
Muscles that move joints all have antagonists, muscles whose action opposes its action. Which of the following is most likely an antagonist to the masseter?
Muscles are involved in many facial expressions. Which of the following muscles is involved in creating a smile?
Bell’s palsy results in drooping of the affected side of the face and is due to damage to the facial nerve. Which group of muscles are not functioning in this condition?
The strength of a muscle is directly related to how many fibers it contains. Having a triangular shape with a broad origin allows for more fibers to concentrate force on the insertion. Which of the following muscles fits the description of having a triangular shape?
Muscles connected to the hyoid that depress the mandible need other muscles to fix the hyoid solidly in place so they work. If these muscles do not contract when the geniohyoid does what action will be seen?
Most muscles in the body originate from a strong bony platform. One of these areas in the skull is the zygomatic process. Which of the following muscles originates from the zygomatic arch?
Some muscles have no bony attachments. The intrinsic muscles of the tongue match this description. Which intrinsic tongue muscle acts to flatten and widen the tongue?
Which if the following muscles is the main muscle used to protrude the mandible?
What muscle forms the muscular floor of the mouth?
Which letter in the figure identifies the superior pharyngeal muscle?
Which letter in the figure identifies the platysma?
Which letter in the figure identifies the medial pterygoid?
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