Relaxation Pressure Demonstration
What will be an ideal response?
If you have a manometer handy, you can demonstrate development of the relaxation pressure curve. Using a spirometer, identify your vital capacity(VC) (or that of a student). Then have the student exhale to 80% of VC and test relaxation pressure. Continue in 20% increments and plot the results.
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The left ventricle has to pump more blood than the right ventricle because the left ventricle has to pump blood throughout the entire body, whereas the right ventricle just pumps blood to the lungs
a. true b. false
How are T cells "introduced" to antigens?
A. T cells bind to and phagocytose antigens. B. Antibodies immobilize the antigens for T cell recognition and destruction. C. Antigen-presenting cells link antigenic peptides to MHC proteins to which T cells will attach. D. T cells wait in the blood until an antigen collides with them and binds to their TCR.
Central chemoreceptors detect a decrease in pH in interstitial fluids in the brain. What is the response of the medulla to maintain delivery of oxygen to cells?
A) A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasodilation and a decrease in blood pressure. B) A feedback loop is initiated that indirectly decreases sympathetic activity which results in vasodilation and a decrease in blood pressure. C) A feedback loop is initiated that indirectly increases parasympathetic activity which results in vasoconstriction and a rise in blood pressure. D) A feedback loop is initiated that indirectly increases sympathetic activity which results in vasoconstriction and a rise in blood pressure.
The term dorsal means toward the back of the body or body part.
Answer the following statement true (T) or false (F)