In order to increase contractility, NE released form sympathetic fibers would act at synapses with _______

a. SA node cells
b. AV node cells
c. ventricular contractile cells
d. atrial contractile cell


Answer: c. ventricular contractile cells

Anatomy & Physiology

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The __________ distance is the effective diffusion distance for oxygen from the capillary into the surrounding tissue

Fill in the blank with the correct word.

Anatomy & Physiology

Cardiac muscle cells in the atria are capable of contracting spontaneously because of a spontaneous depolarization resulting from:

A. an inward current through a hyperpolarization activated channel B. cyclic changes in the activity of the Na+,K+-ATPase C. slow leak of Ca++ through the dihydropyridine receptor D. cyclic changes in the activity of the sarcolemmal Ca++ pump E. cyclic changes in the activity of SERCA

Anatomy & Physiology

Leukopenia ________

A) may result from bone marrow cancer, or from living at high altitudes B) is characterized by uncontrolled proliferation of abnormal WBCs C) may indicate a disease such as cirrhosis of the liver or tuberculosis D) is characterized by an abnormally high WBC count

Anatomy & Physiology

Damage to which tunic of the GI tract would directly affect Auerbach's plexus?

A. Muscularis B. Mucosa C. Serosa D. Submucosa

Anatomy & Physiology