Sympathetic stimulation increases contractile strength by:
a. decreasing sodium permeability
b. increasing calcium permeability
c. closing funny channels
d. cause the resting potential to become more negative
e. increasing threshold
B
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Which reaction involving CO2 predominates within erythrocytes in the pulmonary capillaries of the lung?
A. HCO-3 combines with H+ to form H2CO3, which dissociates into CO2 and H2O. B. HCO-3 dissociates into H+, CO, and O2. C. CO2 combines with H+ to form HCO2. D. CO2 combines with water to form bicarbonate ion and carbonic acid.
A patient was admitted for depression. What should the nurse explain to the patient regarding the role of serotonin and depression?
What will be an ideal response?
In the condition known as complete heart block, what happens?
A) The fibrous skeleton of the heart breaks down, interfering with the passage of blood from the atria to the ventricles. B) The mitral valve leaflets calcify and close, preventing blood from being pumped efficiently by the left side of the heart. C) Coronary arteries are blocked by plaques, preventing blood and oxygen from reaching the myocardial contractile cells. D) Blood flow through the foramen ovale is blocked. E) Electrical signals from the SA node never reach the ventricles, so the contraction of the atria is not coordinated with the contraction of the ventricles.
What type of memory is involved in learning the material in Human Physiology about memory?
A. Episodic B. Implicit C. Semantic D. Procedural