When Harry stepped on a nail, inflammation and infection were severe, but localized. Which of the following functions serves to wall off or isolate the injured area to the greatest degree?
A. increased temperature
B. coagulation of plasma proteins
C. loss of function
D. swelling
E. vasodilation
B
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Which of the following brain structures consists of the medulla oblongata, pons and midbrain?
a) Brain stem b) Cerebrum c) Cerebellum d) Diencephalon e) Dura mater
Describe a hypothetical situation in which two isolated human populations evolve very different muscle fiber composition. In other words, what environmental conditions or food-gathering strategies might cause a prevalence of one fiber type (fast-twitch versus slow-twitch) to be more adaptive than another?
What will be an ideal response?
You are observing the letter "e" under a compound microscope. Which of the following indicates how the image appears as you view it through the ocular lens?
What will be an ideal response?
You notice a missing P wave on a patient's electrocardiogram (ECG) and believe there is a problem with the ________
A) atrioventricular (AV) node B) Purkinje fibers C) left bundle branch D) atrioventricular (AV) bundle E) sinoatrial (SA) node