Which of the following are considered primary lymphatic organs?
a. thymus and lymph nodes
b. red bone marrow and lymph nodes
c. red bone marrow and thymus
d. tonsils and spleen
Answer: c. red bone marrow and thymus
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Which skin receptors allow the skin to adapt to changes in temperature?
A. Nociceptors B. Photoreceptors C. Thermoreceptors D. Tactile corpuscles
Which of the following sutures is found in the infant but sometimes has no evident marking in the adult?
A) frontal B) squamous C) coronal D) sagittal E) lambdoid
Rods exposed to a phosphodiesterase inhibitor would
A) remain in the resting state. B) return to resting membrane potential. C) break down rhodopsin. D) cause bleaching to occur. E) decrease neurotransmitter release.
Mature, less active bone cells are termed
A) osteoclasts. B) osteocytes. C) chondrocytes. D) osteoblasts. E) osteons.