What gives bone its flexibility?
A. Trabeculae
B. Inorganic salts
C. Collagen fibers
D. Elastic fibers
E. Yellow bone marrow
Answer: C
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Chondroitin sulfate is abundant in the matrix of
A) epithelial tissue. B) cartilage. C) areolar tissue. D) elastic connective tissue. E) adipose tissue.
Which of the following correctly lists the sequence of structures that action potentials must move through to excite skeletal muscle contraction?
a) sarcolemma, axon of neuron, T tubules b) T tubules, sarcolemma, myofilament c) muscle fiber, axon of neuron, myofibrils d) axon of neuron, sarcolemma, T tubules e) myofibrils, myofilaments, mitochondria
The thin segment of the nephron loop's descending limb ________
A) helps to pack a greater number of nephron loops into a smaller space B) aids in the passive excretion of nitrogenous waste C) is easily broken and replaced often D) aids in the passive movement of water out of the tubule
Match the type of brain wave with its appropriate description.A. Usually occur in children or in adults experiencing frustrationB. Observed in a person who is awake, quiet, and resting, with eyes closedC. Occur in deep sleep, infancy, and patients with brain disordersD. Occur during intense mental activityAlpha waves
Fill in the blank(s) with the appropriate word(s).