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?
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).
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A) includes active melanocytes. B) is more superficial. C) traps pollutants. D) is highly vascular. E) is more mature.
Excessive changes can actually cause a rupture of the red blood cell
Indicate whether the statement is true or false
The two lobes of the thyroid gland are connected by the
A) follicle. B) infundibulum. C) eminence. D) isthmus. E) gap junctions.
Where is articular cartilage found, and how is it nourished?
A) Articular cartilage is found in the medullary cavity and is nourished by the nutrient artery. B) Articular cartilage is found down the length of the diaphysis and is nourished by the nutrient artery. C) Articular cartilage is found at both metaphyses and is nourished by the metaphyseal artery. D) Articular cartilage is found covering both epiphyseal portions of articulating bone and nutrients diffuse from synovial fluid within the joint. E) Articular cartilage is found in the medullary cavity and is nourished by the rich vascular red bone marrow.