When a person is at rest, approximately ____ percent of his/her blood volume is in systemic veins and venules.
A) 60%
B) 15%
C) 12%
D) 8%
Answer: A) 60%
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A patient is 67 years old and has had a hiatal hernia for three years. In the last year, she has complained of worsening heartburn, especially at night. What are the characteristic symptoms of a hiatal hernia and which of these symptoms did the patient have?
What will be an ideal response?
The condition known as osteopenia
A) affects mostly women. B) causes a gradual reduction in bone mass. C) is caused by too much vitamin D in the diet. D) is rarely seen as people age. E) only affects the femur.
The role of the coronary arteries is to __________.
supply blood to the heart tissue. direct blood to the pulmonary veins. move blood from the atria to the ventricles. direct blood to the aorta.
If an action potential that results in an IPSP and an action potential that results in an EPSP both reach a postsynaptic membrane at the same time, the most likely result is
A) an action potential in the postsynaptic cell. B) two action potentials in the postsynaptic cell. C) no action potential in the postsynaptic cell. D) reverse action potentials in both presynaptic cells. E) an EPSP.