In the laboratory, your professor presents a bone for study. She explains it has a diaphysis and epiphyses. Determine the type of bone, by shape, that she has presented and explain how you came to your conclusion
What will be an ideal response?
Short, flat, irregular, and sesamoid bones do not have diaphyses or epiphyses. Your professor must be presenting a long bone for study. Long bones possess a shaft, known as a diaphysis, and enlarged, rounded ends, known as epiphyses.
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A. cribriform fissure. B. inferior cortical plate. C. middle cranial fossa. D. sella turcica. E. posterior cranial fossa.
Why can we infer that lactation must have evolved at least by the time of the first mammal?
What will be an ideal response?
This figure shows the endocrine system. Which number indicates the thymus gland?
A. 1 B. 2 C. 3 D. 4 E. 6
What is the pacemaker that sets the rate of the heartbeat?
A. The SA node B. The AV node C. The atrioventricular bundle D. The vagus nerve E. The subendocardial conducting network