Anatomy and Phsyiology

Created by ma725533 

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True/False questions

The thick-walled arteries close to the heart are called muscular arteries.

FALSE

7) Hypotension is generally considered systolic blood pressure that is below 100 mm Hg.

TRUE

8) A precapillary sphincter is a cuff of smooth muscle that regulates the flow of blood into the capillaries.

TRUE

9) The carotid sinus reflex protects the blood supply to the brain, whereas the aortic reflex is more concerned with maintaining adequate blood pressure in the systemic circuit as a whole

TRUE

10) Vasodilation is a widening of the lumen due to smooth muscle contraction.

FALSE

11) The pulmonary circulation does not directly serve the metabolic needs of body tissues

TRUE

12) In infants and young people, congenital vascular problems are less common than congenital heart disease.

TRUE

13) The most common form of shock is hypovolemic shock

TRUE

14) Every minute, about 1.5 ml of fluid leaks out of the capillaries

TRUE

15) The pancreas is an example of an organ with arteries that do not anastomose

FALSE

16) An obstruction in the superior vena cava would decrease the flow of blood from the head and neck to the heart.

TRUE

17) Arteries supplying the same territory are often merged with one another, forming arterial anastomoses.

TRUE

18) An increase in blood viscosity will cause an increase in peripheral resistance.

TRUE

19) The first major branch of the femoral artery is the dorsalis pedis artery.

TRUE

Whereas diffusion is more important for solute exchange between plasma and interstitial fluid, bulk flow is more important for regulation of the relative volumes of blood and interstitial fluid.

TRUE

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