The figure illustrates the sacrum. What structure does "C" represent?

A. coccyx
B. sacral hiatus
C. superior articular facet
D. median sacral crest
E. posterior sacral foramina


D

Anatomy & Physiology

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Exercise ________ and ________ bones.

A. thickens; strengthens B. thickens; elongates C. thins; atrophies D. elongates; weakens

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Which embryonic germ layer forms connective tissues such as bone and cartilage?

A) epiderm B) trophoderm C) ectoderm D) mesooderm E) endoderm

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The average lifespan of a red blood cell is

A) 24 hours. B) 1 month. C) 4 months. D) about 1 year. E) many years.

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Color vision

A. is a function of cone cells. B. is most acute in dim light. C. is interpreted in the cerebellum. D. depends on the amount of available rhodopsin. E. is the interaction between rods and cones.

Anatomy & Physiology