What must occur during exercise to ensure adequate oxygen delivery to cardiac muscle?
A. An increased oxygen release to cardiac muscle
B. Decreased heart rate
C. A decreased oxygen content to skeletal muscle
D. Increased coronary blood flow
Answer: D
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Cell type NOT found in areolar connective tissue
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Occlusion of which of the following would primarily damage the posterior wall of the heart?
A. Pulmonary artery B. Right marginal artery C. Right coronary artery D. Circumflex artery E. Coronary sinus artery
Potassium levels in the body are regulated by
A. ADH. B. PTH. C. calcitonin. D. aldosterone. E. insulin.
The pleural cavity is the
A. same as the mediastinum.?B. the serous membrane lining the abdomen.?C. space within which the heart sits.?D. potential space between the two serous membranes surrounding a lung.