Shelly gives her son an ice-cream cone. The boy grasps the cone with his right hand, opens his mouth, and begins to lick the ice cream. Which muscles does he use to perform these actions?
What will be an ideal response?
As the child grasps the ice-cream cone, he uses flexor muscles, principally the flexor digitorum superficialis, flexor digitorum profundus, and flexor pollicis longus muscles. Opening his mouth requires the contraction of the platysma and digastric muscles and the relaxation of the masseter, temporalis, and pterygoid muscles. The licking action would involve the genioglossus muscle (to depress and protract the tongue) and the palatoglossus muscle (to elevate the tongue).
You might also like to view...
Tracheal cartilages provide for _______ on the ________ aspect of the trachea
A. flexibility; anterior B. flexibility; posterior C. rigidity; anterior D. rigidity; posterior
The plural form of corpus is __________.
Fill in the blank(s) with the appropriate word(s).
Temperature stabilization is dependent upon which properties of water?
a. cohesion and adhesion b. capillary action and adhesion c. specific heat and heat of vaporization d. cohesion and specific heat
Which region of a growing bone contains the epiphyseal plate?
A. Diaphysis B. Proximal epiphysis C. Distal epiphysis D. Periphysis E. Metaphysis