Exam 8: Muscle Physiology

For blood pressure recorded as 118/76 mmHg, match the correct values, labelled a. through e., with the pressures in question. a.118 mmHg b.42 mmHg c.97 mmHg d.76 mmHg e.90 mmHg -What is the diastolic pressure?

Oedema, venous pooling, and a reduction in cardiac output are consequences of standing still for a long time.

Which statement is correct for mean arterial pressure?

What is released by most sympathetic fibres at the arterioles?

What are the major resistance vessels of the body?

Histamine released in injured areas produces local arteriolar vasodilation.

All the fluid forced out of the capillaries is filtered through the lymphatics before being returned to the venous blood.

Measurement of arterial pressure using a sphygmomanometer is possible because turbulent blood flow that occurs as arterial pressure overcomes a partially occluded artery, and can be heard by a stethoscope placed just over the artery.

Vasoconstriction of blood vessels changes the flow of blood through them by decreasing/ increasing it.

Because the capillaries have the smallest radii of any vascular segment, they are the major resistive vessels.

Describe how blood pressure is regulated.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -chemoreceptors activated

Which of the following statements does NOT correctly describe blood pressure?

Mean arterial pressure = ____________________ × ____________________.

What is the mean arterial blood pressure when the blood pressure is recorded as 117/78?

Decreased cardiac output _____ the mean systemic arterial blood pressure.

Cardiac output = (EDV - ____________________) × heart rate.

The capillary vessel walls are more permeable than the lymphatic vessel walls.

Accumulation of excess interstitial fluid is known as ______________________.

At any point in time, most of the blood flow in the body is contained in the capillaries.