All amphibians are __________; they are totally dependent upon their environment to regulate body temperature and metabolic activity
Fill in the blank(s) with correct word
poikiloterms
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Wrinkles in elderly individuals are the result of
A) increased production of epidermis. B) loss of elastic filaments in the reticular layer of the dermis. C) increased keratinization of the epidermis. D) the loss of glands and hair follicles from the skin. E) decreased thickness of the dermis.
Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open.
Answer the following statement true (T) or false (F)
Which of the following describes a lysosome?
A. A nonmembranous structure that is essential for mitosis B. A complex network of interconnected membranes that is a communication system in the cell C. A double-membraned organelle that is the "powerhouse" of the cell D. A tiny, membranous sac that contains enzymes that degrade worn cell parts and debris
List some hormones that are necessary for maintaining a healthy integument
A) growth hormone, mineralocorticoids, glucocorticoids, and melatonin B) ADH, oxytocin, and prolactin C) aldosterone, atrial natriuretic peptide, insulin, and glucagon D) growth hormone, sex hormones, growth factors, glucocorticoids, and thyroid hormones E) sex hormones, mineralocorticoids, gonadocorticoids, and calcitonin