Which of the following is a circulatory adjustment to sustained moderate exercise? a. Constriction of the cutaneous circulation b. Decreased intestinal blood flow c. Decreased venous return d. Increased renal blood flow e. Increased total peripheral vascular resistance
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Which of the following is a circulatory adjustment to sustained moderate exercise?
a. Constriction of the cutaneous circulation
b. Decreased intestinal blood flow
c. Decreased venous return
d. Increased renal blood flow
e. Increased total peripheral vascular resistance
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- When the blood pressure is high, how will the myogenic reflex help to bring the blood pressure back to normal? (circle all the apply options) A. potassium channels open helping potassium to rush into the cellB. vasoconstriction takes placeC. vasodilation take placeD. stretch receptors in the afferent arterioles are activatedE. calcium channels on smooth muscle opensWhen the blood pressure is high, how will the myogenic reflex help to bring the blood pressure baack to normal? (circle all that apply)a. Calcium channels on smooth muscle opensb. Potassium channels open helping potassium to rush into the cellc. Vasoconstriction take placed. Stretch receptors in the afferent arterioles are activated e. Vasodilation take placePeripheral resistance is governed by: O A. Vascular smooth muscle contraction and relaxation. O B. Arteriole diameter. OC. Neural/hormonal signaling. O D. All of the above. OE. None of the above.
- Contraction of the smooth muscle layers of the arterioles a. increases the frictional resistance to blood flow. b. may be a way of increasing heat exchange through the skin. c. can increase blood flow to an organ. d. All of the choices are correct.Sympathetic impulses to the smooth muscles in the walls of arteries and arterioles produceA. Vasodilation only C. Vasomotor inhibitionB. Vasodilation and vasoconstriction D. Arteriosclerosis Substances exchanged at the capillary level move through the capillary walls byA. Diffusion B. Filtration C. Osmosis D. Active transport In the measurement of blood pressure, the cuff of the sphygmomanometer usually surroundsA. The radial artery C. The brachiocephalic arteryB. The dorsalis pedis artery D. The brachial artery Arterial blood pressure is independent ofA. Blood Volume B. Heart rate C. Blood Viscosity D. Influx of calcium ions Identify the TRUE statement (s). There may be several correct answers,A. An increased cardiac output is reflected in an elevated diastolic pressure.B. An increased cardiac output is reflected in a decreased diastolic pressure.C. An increase in the force of contraction produces an elevated…Which of the following are false about the inward rectifier? OA The inward rectifier current is carried by potassium OB. The inward rectifier carries inward current at potentials negative to the Nersnst potential for potassium under voltage clamp conditions. OC. The inward rectifier current obeys Ohm's law. OD. The inward rectifier is absent in the sino-atrial node. OE All of the above are true.
- Endothelium in the arterioles does not A. Release nitric oxide to relax contraction. OB. Sense stress due to fluid flow and/or pressure in the arteriole OC Face the lumen of the arteriole. D. Contract to reduce the capillary diameter. O E. All of the above are true.Think of the sodium potassium pump and Digitalis use you studied to treat congestive heart disease condition. What are the following action is/are true about it? options: It increases heart rate It increases blood flow throughout the body and use to treat congestive heart failure It increases intracellular sodium and drive the influx of calcium and causes contractility All are correct A and CSingle effect in the loop of Henle is -----------------------.A. The side-to-side difference between the descending limb and the interstitial fluidB. The end-to-end difference between the descending limb and the interstitial fluidC. The same as the countercurrent multiplier systemD. The side-to-side difference between the descending and ascending limbs fluidE. None of the above are correct.
- Select ALL of the following that are TRUE about the venous end of a capillary bed: Group of answer choices A. Reabsorption is occurring B. Hydrostatic pressure is pushing plasma out of the capillary C. Blood Colloid Osmotic Pressure < Capillary Hydrostatic Pressure D. Filtration is occurring E. Proteins are pulling fluids into the capillary F. Net Filtration Pressure is negative G. Blood Colloid Osmotic Pressure > Capillary Hydrostatic Pressure H. Net Filtration Pressure is positiveA 52-year-old male patient who is in hypovolemic shock has the following clinical signs: Heart rate 125 beats/minute, blood pressure 80/55mmHg and urine output 21mL/hr. After administering an IV fluid bolus, which of the following signs is the best indication for improved perfusion? a. Urine output increases to 30ml/hr b. Heart rate drops to 100 beats/minute c. Systolic blood pressure increases to 85mmHg d. Right atrial pressure increasesForeign proteins in the blood stimulate an immune response. Which of the following is true? Select one: O a. Macrophages ingest pathogens O b. Helper T cells stop the immune response Killer (cytotoxic) T cells produce antibodies Oc. O d. B cells start an immune response