Which structures or processes prevent excessive loss of blood pressure during severe bleeding?
A) venoconstriction
B) venous valves
C) arteriosclerosis
D) arteriovenous anastomoses
E) vasodilation
A) venoconstriction
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The problem of electrical discontinuity caused in the normal heart by the connective tissue separating the atria from the ventricles is solved by
a. having the A-V node function as a secondary pacemaker. b. having an ectopic pacemaker. c. coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the vagus nerve. d. coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the bundle of His. e. coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the Purkinje fibers.
A person who is standing facing forward with hands at the sides, palms facing forward, is in the __________.
Fill in the blank(s) with the appropriate word(s).
Elevated levels of neutrophils indicate:
A) bacterial infection. B) viral infection. C) normal condition. D) cancer.
The ________ is the main chewing muscle
A) hyoglossus B) lateral pterygoid C) buccinator D) masseter