24. While measuring blood pressure, A. the inflated cuff decreases blood flow th
ID: 3520558 • Letter: 2
Question
24. While measuring blood pressure, A. the inflated cuff decreases blood flow through the vessel, but doesn't stop it completely B. the first sound after releasing the air is diastolic pressure. C. the pressure at which there is no more sound (after releasing air) is systolic pressure, D. the brachial artery is compressed until it is collapsed, and then air is slowly let out of 25. The greater the filling time, A. the greater the end-systolie volume. B. the greater the stroke volume. C. the greater the end-diastolic volume. D. A and B are correct E. B and C are correct. 26. Once a T cell recognizes an MHC protein and its presented antigen, A. antigen-presentation will occur. B. specific types of T cells will become activated, depending on the type of cell presenting the antigen. C. memory T cells will cause an increase in the suppressor T cell population. D. the cell housing the antigen will immediately be destroyed 27. When arterial blood pressure increases A. barorecptor output decreases. B. cardiac output will reflexively decrease. C. the carotid sinuses will remain inactive but the aortic sinuses will become active. D. stroke volume will decrease due to less venous return. 28. The functions of the lymphatic system include all of the following EXCEPT A. produce lymphocytes. B. maintain normal blood volume. C. maintain body temperature. D. distribute lymphocytes to defend against infections. 29. A person suffering from hypocalcemia will have A. weak or no cardiac contractions. B. an increased body temperature. C. anemia. D. highly excitable cardiac muscle cells. 30. A patent ductus arteriosus A. will allow blood to travel from the right atrium to the left atrium. B. will cause blood to by-pass the lungs. C. will result in a decreased cardiac output. D. is a normal condition in a newborn.Explanation / Answer
Q 24 answer is d when we inflate the cuff the brachial artery is completely compressed to stop blood flow then we release pressure so that air leak and at time the first sound heard of blood flow is the peak systolic pressure.
Q 25 answeer is E , both b and c are correct. As the filling time is inc increased , because with increase in the filling time the blood is collected in the left ventricle and therefore end diastolic volume increase which lead to increase in the stroke volume.
Q 26 answer is B , specific type of the diesel will become activated because when the MHC class 1 molecule come in contact with CD 8 Cell and MHC class 2 will activate the CD 4 cells via antigen presenting cells.
Q answer is option B, whenever there is increase in the blood pressure there will be increase firing of the baroreceptors like carotid arch and aortic sinus so when they are activated which lead to increase in the parasympathetic nerve Innervation and decrease in the sympathetic nerve so there will be decrease in the heart rate which lead to decrease in the ventricular contactability and the cardiac output finally
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.