Comparing and contrasting arteries and veins, veins havea. thicker walls.b. a greater amount of smooth muscle than arteries.c. a tunica media, but arteries do not.d. valves, but arteries do not.e. All of these are correct

The only vessels that provide direct access oxygen and nutrients to nearly every cell in the body are the __________.   A arterioles   B capillaries   C arteries   D venules   E veins

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.

The endocardium is composed of __________.   A collagen fibers and the lumen   B myocardiocytes   C a think layer of flat epithelial cells   D cardiac muscle cells

Which of the fpllowingis shared by the lymphatic vessels and cardiovascular veins? A.Valves to ensure direction of flow B.Muscle pump C.Negative intra-thoracic pressure allows return of fluid D.All answers are correct

A point of both origin and termination in relation to adjacent structures also used to designate the boundaries of arteries describes the:     A. Linear guides     B. Anatomical guides     C. Anatomical limits     D. Topographical human anatomy

A Which of the following vascular devices is inserted percutaneously into a femoral vein? Select one: O a. O b. O C. O d. Central Venous Access device Non-tunnelled vascular device Tunnelled vascular device Midline catheter device

bleeding from a blood vessel is stopped by?  which of the following is correct?   a. vascular spasms  b. a platelet plug  c. formation of a clot  d. all the above

If the AV node was damaged, the parts of the heart that would fail to contract are (the) O a. right atrium and right ventricle O b. both atrium and both ventricles O c. left atrium and left ventricle O d. both ventricles

One difference between the semilunar valves and the atrioventricular valves is that only the semilunar valves ______.   A Are designed to blood flow in both directions   B Have chordae tendineae attached   C Are shaped like pockets   D Have papillary muscles   E All of the above