What organelle degrades old, worn-out organelles and cell components?
A) Golgi apparatus B) peroxisome
C) rough endoplasmic reticulum (RER) D) lysosome
Answer: D
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In general, a skeletal muscle is composed of a: Connective tissue sheathsb: Nervesc: Arteriesd: Veinse: Muscle fibers
A. b, c, d, e B. a, b, c, e C. a, b, c, d, e D. a, b, d, e E. a, b, c, d
Diabetes mellitus produces many homeostatic imbalances, including acidosis. The pH imbalance is due to ketoacidosis, which results from excessive accumulation of by-products of fat metabolism, as the body cannot meet energy needs from carbohydrate metabolism. Sally is a teenaged diabetic who sometimes rebels by not taking her insulin. Her mother takes her to the hospital because her breathing has
become deep and gasping. Explain Sally's breathing pattern. What other compensatory responses may occur, and would they occur earlier or later than the respiratory response? What will be an ideal response?
The heart is
a. sympathetically innervated via cardiac nerve fibers b. parasympathetically innervated by vagus nerve fibers c. only partly innervated by the somatic nervous system d. innervated by only the sympathetic division of the autonomic nervous system e. both a and b
Cartilage tissues are likely to be slow in healing following an injury because
A. chondrocytes cannot divide. B. the intercellular material is semisolid. C. chondrocytes do not have direct blood supplies. D. cartilage cells are immersed in fluids.