Apply It: 15.1 Apply Terms Learned in Chapters 10-14

Define the medical term xerophthalmia.

also known as dry eye, is drying of eye surfaces, including the conjunctiva, because the tear glands do not produce enough tears (xer means dry, ophthalm means eye, and -ia means abnormal condition).

Define the medical term macula.

also known as the macula lutea, is the clearly defined light-sensitive area in the center of the retina that is responsible for sharp central vision.

Define the medical term mast cells.

found in the connective tissue of the dermis, respond to injury, infection, or allergy by producing and releasing substances, including heparin and histamine.

Define the medical term luteinizing hormone.

stimulates ovulation in the female. In the male, the luteinizing hormone stimulates the secretion of testosterone.

Define the medical term cryptorchidism.

also known as an undescended testicle, is a developmental defect seen in newborns in which one or both of the testicles have failed to descend into their normal position in the scrotum (crypt means hidden, orchid means testicle, and -ism means abnormal condition).