Chapter 8, Problem 10CTE

Which of the following slows the heart rate and AV conduction? A. Resting membrane potential B. Parasympathetic nervous system C. Pacemaker D. Phase 0

Which of the following statements is true? The longer the vessel, the lower the resistance and the greater the flow. As blood volume decreases, blood pressure and blood flow also decrease. Increased viscosity increases blood flow. All of the above are true.

A patient suffering from hypertension may receive drugs that decrease the hearts output, dilate arterioles, or increase urine production. In each case, how would the drug treatment help relieve hypertension?

Which of the following lists the valves in the order through which the blood flows from the vena cava through the heart? tricuspid, pulmonary semilunar, bicuspid, aortic semilunar mitral, pulmonary semilunar, bicuspid, aortic semilunar aortic semilunar, pulmonary semilunar, tricuspid, bicuspid bicuspid, aortic semilunar, tricuspid, pulmonary semilunar

Which of the following statements is true? In one day, more fluid exits the capillary through filtration than enters through reabsorption. In one day approximately 35 mm of blood are filtered and 7 mm are reabsorbed. In one day the capillaries of the lymphatic system absorb about 20.4 liters of fluid. None of the above are true.

Several years ago the deaths of several airline travelers led to warnings about economy-class syndrome. The idea is that economy-class passengers dont have as much leg room as passengers in more expensive seats, so they are more likely to sit essentially motionless for long periods on flightsconditions that may allow blood to pool and clots to form in the legs. This condition is called deep-vein thrombosis, or DVT. Given what you know about blood flow in the veins, explain why periodically getting up and moving around in the planes cabin during a long flight may lower the risk that a clot will form.

High blood pressure would be a result of ___________ . a high cardiac output and high peripheral resistance a high cardiac output and low peripheral resistance a low cardiac output and high peripheral resistance a low cardiac output and low peripheral resistance

Describe systemic circulation

When the systemic blood pressure increases, the aortic and carotid sinus baroreceptors initiate reflexes that cause a/an 1. Increased heart rate 2. Decreased ventilatory rate 3. Increased ventilatory rate 4. Decreased heart rate A. 1 only B. 2 only C. 3 only D. 2 and 4 only