If someone's blood pressure were listed as 125/75 mmHg, then their pulse pressure would be
A. 50 mmHg.
B. 40 mmHg.
C. 5/3.
D. 100 mmHg.
E. 125 mmHg.
Answer: A
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The Waldorf family was caught in a fire but escaped. Unfortunately, the father and daughter suffered burns. The father had second-degree burns on his chest, abdomen, and both arms, and third-degree burns on his entire left lower extremity. The daughter suffered first-degree burns on her head and neck and second-degree burns on both lower extremities.
a. What percentage of the father's body was covered by burns? b. What percentage of the daughter's body received first-degree burns? c. What part of the daughter's body has both the dermis and epidermis involved? d. The father experiences a good deal of pain in the area of the chest and abdomen, but little pain in the leg. Why?
To stimulate muscle contraction, acetylcholine is released from the ________ into the synaptic cleft.
A. sarcoplasmic reticulum B. synaptic vesicles C. terminal cisterns D. sarcolemma E. junctional folds
A stimulus either causes an action potential or it doesn't. This is called
A. a latent period response. B. a relative refractory response. C. a graded response. D. an all-or-none response. E. an arbitrary response.
An inflammatory response is triggered when
A) red blood cells release pyrogens. B) T cells release interferon. C) mast cells release histamine and heparin. D) neutrophils phagocytize bacteria. E) blood flow to an area increases.