GROSS ANATOMY
HEAD NECK
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
1, 2, & 3
|
|
|
1 & 3
|
|
|
2 & 4
|
|
|
4 Only
|
Detailed explanation-1: -The geniohyoid muscle is under the genioglossus muscle; it is a small and short muscle that has a cylindrical shape located above the digastric muscle and the mylohyoid muscle. The mylohyoid muscle has a square morphology that forms the muscular floor of the mouth; it connects superficially to the digastric muscles.
Detailed explanation-2: -It is a flat and triangular muscle that originates from the mandible near the molars hence the prefix “mylo” (Greek for molars) and inserts on the hyoid bone. The mylohyoid mainly functions to elevate the hyoid bone, elevate the oral cavity, and depress the mandible.
Detailed explanation-3: -The geniohyoid muscles: mainly pull the hyoid bone, and therefore the attached larynx, up and forward during swallowing; and. because they pass posteroinferiorly from the mandible to the hyoid bone, when the hyoid bone is fixed, they can act with the mylohyoid muscles to depress the mandible and open the mouth.
Detailed explanation-4: -The paired geniohyoid muscles, placed next to each other, meet in the midline of the mouth floor. They lie inferior to the genioglossus muscles and right above the mylohyoid muscles.