The process of keratinization begins in the stratum granulosum
Indicate whether this statement is true or false.
TRUE
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The internal feature of bone that makes it simultaneously strong and lightweight is the
A. arrangement of collagenous fibers. B. areolar connective tissue in the central cavity. C. pattern of osteons. D. latticework structure of spongy bone. E. presence of cartilage.
A deficiency disease that illustrates the effect of integumentary system function on the structure of the skeletal system is
A) osteoporosis. B) seborrheic dermatitis. C) decubitus ulcers. D) rickets. E) beriberi.
When a skeletal muscle cell contracts and the muscle shortens,
A) myosin heads generate a single power stroke. B) the actin molecule swivels during the power stroke. C) some myosin heads are forming crossbridges as others are releasing them. D) the actin ATPase allows the actin molecule to swivel. E) the position of an actin molecule relative to a myosin molecule does not change.
Which type of distal cell within kidney tubules and collecting ducts are responsive to aldosterone and antidiuretic hormone?
A. Type A cells B. Type B cells C. Intercalated endocrine cells D. Principal cells