When a blood vessel is injured, it releases chemicals that activate platelets and cause them to stick to the injury site. The activated platelets in turn release more chemicals and attract more platelets to the injury site until the wound is fully sealed. This process of blood clotting is an example of

A. feedforward regulation.
B. acclimatization.
C. adaptation.
D. negative feedback.
E. positive feedback.


Answer: E

Anatomy & Physiology

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Muscles that laterally rotate the thigh include all of the following except the

A) gluteus maximus. B) obturator internus. C) obturator externus. D) piriformis. E) tensor fasciae latae.

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The ____________________ nervous system controls all the involuntary functions of the body

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In the diagram, where is the olfactory foramina?

a) C b) D c) E d) F e) G

Anatomy & Physiology