Exposure to ultraviolet light (sunlight) causes the skin to darken by increasing the production of
A) hemoglobin.
B) carotene.
C) collagen.
D) keratin.
E) melanin.
E
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Arteriosclerosis is one example of ectopic ossification, which means ________.
A. abnormal calcification of a tissue B. accumulation of collagenous fibers in blood vessels C. artery mineralization by osteoblasts D. ossification of an entire blood vessel E. the solubility product has been reached
Which type of gland is ductless and secretes chemical messengers that are carried in the blood?
A. Exocrine B. Endocrine
Growth hormone promotes growth of soft tissues by __________ and hyperplasia
Fill in the blank(s) with correct word
Which long bone structure is correctly matched with its description or function?
a. epiphysis; the end of a bone that is composed of compact bone only b. articular cartilage; fibrocartilage located at the ends of a bone c. periosteum; responsible for growth in bone width d. perforating fibers; blood vessels that penetrate the bone.