Question

Which of the following is an extrinsic muscle of the human tongue?
A. Hyoglossus
B. Palatoglossus.
C. Styloglossus
D. All of the above

Answer 1

Hint: There are four extrinsic muscles originating from the bone and extend to the tongue. Their main function includes altering the tongue's position allowing for protrusion, retraction, and side-to-side movement.

Complete answer: Eight of the muscles present in the human tongue are classified as intrinsic or as extrinsic. The four intrinsic muscles are responsible for changing the shape of the tongue and are not attached to any of the bones. These include the superior longitudinal muscle, the inferior longitudinal muscle, the vertical muscle, and the transverse muscle. These four extrinsic muscles act to change the position of the tongue and are also anchored to the bone. These are the genioglossus, the hyoglossus, the chondroglossus, the styloglossus, and the palatoglossus. The hyoglossus is thin and therefore the quadrilateral which arises from the side of the body and from the entire length of the greater cornu of the hyoid and passes almost vertically upward to enter the side of the tongue in between the styloglossus and therefore the inferior longitudinal muscle of the tongue. The palatoglossus is that the glossopalatine muscle which can be a little fleshy fasciculus that's narrower within the center than at either end which forms with the mucosa covering its surface at the glossopalatine arch. The styloglossus is the shortest and thus the littlest of the three styloid muscles which arise from the anterior and lateral surfaces of the method near its apex.
Therefore, the correct answer is option D.

Note: The muscles that form the bulk of the tongue are the intrinsic muscles, which run from one part of the tongue to the other, and extrinsic muscles, which are attached to the bone. The skeletal muscle in the tongue is arranged in bundles which typically run at the right angles to each other. Both longitudinally and the transversely cut skeletal muscle fibres are present.