Exam 10: The Blood Vessels and Blood Pressure

Arteriolar smooth muscle normally displays a state of partial constriction known as __________,which establishes a baseline of arteriolar resistance.​

Circulatory shock from extensive loss of blood volume is known as:

By the time the blood enters the venous system,blood pressure averages only:

Although ventricular pressure falls to 0 mm Hg during diastole,arterial pressure does not fall to 0 mm Hg because the next cardiac contraction refills the arteries before all the blood drains off.

Local arteriolar myogenic and chemical mechanisms that keep tissue blood flow fairly constant (despite rather wide deviations in mean arterial driving pressure)is termed:

What vasoactive chemicals do arteriolar endothelial cells release?

Right atrial volume receptors and hypothalamic osmoreceptors are primarily important in water and salt balance in the body.

The large holes within the leaky capillaries of the kidneys and intestines are known as:

What compound brings about local arteriolar vasodilation by causing relaxation of arteriolar smooth muscle in the vicinity?

During systole,no blood enters the arteries,while blood continues to leave,driven by elastic recoil.

Large percentages of the cardiac output are distributed to the kidneys in order to eliminate metabolic wastes and adjust water and electrolyte composition.

What harmful compound does the pancreas release when it does not get enough blood due to circulatory shock?

The major determinant of resistance to blood flow is the:

The efferent pathway of the cardiovascular control center is the ___________ nervous system.

On average,the hydrostatic pressure is 37 mm Hg at the arteriolar end of a tissue capillary.​

Arteriolar radius is extrinsically controlled by the hormones vasopressin and angiotensin II,which are potent vasoconstrictors.​

What happens to blood flow as it approaches the heart?

Capillaries consist of only a(n)__________ layer of flat __________ cells.​

Lymph percolates through lymph __________,which contain special __________ that destroy bacteria picked up from the interstitial fluid.

The endothelial cells in brain capillaries are joined by __________ junctions so that pores are nonexistent.