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Jessica Contreras

Physiology Week 10

QuestionAnswer
A glycoprotein hormone that is secreted to increase oxygen concentration in the tissues is erythropoietin.
The localized pressure gradient needed to maintain blood flow in a tissue is called perfusion pressure.
Which are the two baroreceptors that are located near the heart? aortic baroreceptors and carotid baroreceptors
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? It flows into the inferior vena cava.
The term blood type refers to the type of blood cell antigen.
The heart begins beating in the fetus at about what stage of development? After about 4 weeks
Which of the following is not true of ventricles? All of the above are true of the ventricles.
Which are the two baroreceptors that are located near the heart? aortic baroreceptors and carotid baroreceptors
In the extrinsic pathway of stage 1 of the clotting mechanism, chemicals released from damaged tissues trigger the cascade of events that ultimately result in the formation of prothrombin activator.
What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium? Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium.
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