Which of the following is most responsible for detecting an increase in systemic arterial H+ concentration?
A. the medulla of the brainstem
B. the peripheral chemoreceptors
C. the central chemoreceptors
D. the diaphragm
E. the dorsal respiratory group
B
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When sodium channels are fully open, the membrane of the ventricular cardiocyte ________
A) sharply depolarizes B) sharply repolarizes C) plateaus D) sharply hyperpolarizes E) has no response
Thin myofilaments are called ________
A) Myosin B) Myofibril C) Actin D) Z bars
In ________ a stimulus produces a response that amplifies or enhances the original stimulus
A) negative feedback B) positive feedback C) homeostatic equilibrium D) dynamic equilibrium E) homeostasis
Leukemia is to leukocytes as ________ is to erythrocytes.
A. erythroblastosis B. anemia C. agglutination D. erythropoiesis E. polycythemia