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AP chap 19

blood vessels

QuestionAnswer
histologically, the ___ is squamous epithelium supported by a sparse connective tissue layer. tunica intima
the circulatory route that runs from the digestive tract to the liver is called___ hepatic portal circulation
which of the following blood pressure reading s would be indicative of hypertension? 170/96 in a 50 year old man
the velocity of blood flow is___ slowest in the capillaries because the total cross sectional area is the greatest
which of the choices below does not involve tissue perfusion? blood clotting
fenestrated capillaries____ are not found in the brain
what do the ductus arteriosus and the foramen ovale become at birth? ligamentum arteriosum; fossa ovalis
in the dynamics of blood flow through capillaries, hydrostatic pressure____ is the same as capillary blood pressure
which of the following signs of hypovolemic shock is a relatively late sign? rapidly falling blood pressure
which of the choices below reflects the balance or imbalance between the direction and amount of fluid that flows across the capillary walls? hydrostatic and osmotic pressure
which tunic of an artery contains endothelium? tunica intima
which of the following is not one of the three main factors influencing blood pressure? emotional state
the short term controls of blood pressure mediated by the nervous system and bloodborne chemicals primarily operate via all but which of the following? altering blood volume
which of the following is true about veins? veins are called capacitance vessels or blood reservoirs
brain blood flow autoregulation____ is abolished when abnormally high co2 levels persist
normal average blood pressure for a newborn baby is___ 90/55
a patient with essential hypertension might have pressure of 200/120 mm hg. this hypertensive state could result in all of the following changes except____ decreased size of the heart muscle
if blood pressure is almost normal in a person who has lost blood, does that mean the tissues are receiving adequate blood flow? not neessarily
the form of circulatory shock known as hypovolemic shock is____ shock that results from large scale loss of blood volume or after severe vomiting of diarrhea
which of the choices below does not explain why low capillary pressures are desirable? low blood pressure is more desirable than high blood pressures
which of the following do not influence arterial pulse rate? the vessel selected to palpate
modified capillaries that phagocytes are called____ sinusoids
which of the choices below explains why the arterioles are known as resistance vessels? the contraction and relaxation of the smooth muscle in their walls can change their diameter
cerebral blood flow is regulated by____ intrinsic autoregulatory mechanisms
a thrombus (blood clot) in the first branch of the arch of the aorta would affect the flow of blood to the ___ right side of the head and neck and right upper arm
which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation? tunica media
which of the following chemicals does not help regulate blood pressure? nitric acid
the arteries that directly feed into the capillarty beds are called____ arterioles
factors that aid venous return include all except___ urinary output
peripheral resistance___ increases as blood viscosity increases
secondary hypertension can be caused by___ arteriosclerosis
select the correct statement about factors that influence blood pressure excess red cell production would cause a blood pressure increase
the arteries that are also called distributing arteries are the____ muscular arteries
which of the following processes provides a long term response to changes in blood pressure? renal regulation
Created by: 1353843965
 

 



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