Blood Vessels

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Which of the following is not one of the three main factors influencing blood pressure?
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Terms in this set (102)
Which of the following is not one of the three main factors influencing blood pressure?
emotional state
Which of the following chemicals does not help regulate blood pressure?
nitric acid
Which statement best describes arteries?
All carry blood away from the heart.
Which tunic of an artery contains endothelium?
tunica intima
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________.
capillaries
The circulatory route that runs from the digestive tract to the liver is called ________.
hepatic portal circulation
The arteries that are also called distributing arteries are the ________.
muscular arteries
Aldosterone will ________.
promote an increase in blood pressure
The pulse pressure is ________.
systolic pressure minus diastolic pressure
Which of the following signs of hypovolemic shock is a relatively late sign?
rapidly falling blood pressure
Which of the following is likely during vigorous exercise?Capillaries of the active muscles will be engorged with blood..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.Which of the following is true about veins?Veins are called capacitance vessels or blood reservoirs.Which of the following processes provides a long-term response to changes in blood pressure?renal regulationPeripheral resistance ________.increases as blood viscosity increasesBrain blood flow autoregulation ________.is abolished when abnormally high CO2 levels persistBlood flow to the skin ________.increases when environmental temperature risesWhich 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 pressureWhich of the following is a type of circulatory shock?vascular, due to extreme vasodilation as a result of loss of vasomotor toneWhich tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation?tunica mediaThe influence of blood vessel diameter on peripheral resistance is ________.significant because resistance is inversely proportional to the fourth power of the vessel radiusThe form of circulatory shock known as hypovolemic shock is ________.shock that results from large-scale loss of blood volume, or after severe vomiting or diarrheaIn the dynamics of blood flow through capillaries, hydrostatic pressure ________.is the same as capillary blood pressureThe hepatic portal vein ________.carries nutrient-rich blood to the liverThe term ductus venosus refers to ________.a special fetal vessel that allows umbilical blood to bypass the liverWhich of the choices below does not explain why low capillary pressures are desirable?Low blood pressure is more desirable than high blood pressureWhich of the choices below does not involve tissue perfusion?blood clottingWhich of the following do not influence arterial pulse rate?the vessel selected to palpateWhich of the following are involved directly in pulmonary circulation?right ventricle, pulmonary artery, and left atriumHistologically, the ________ is squamous epithelium supported by a sparse connective tissue layer.tunica intimaThe arteries that directly feed into the capillary beds are called ________.arteriolesFenestrated capillaries ________.are not found in the brainModified capillaries that are lined with phagocytes are called ________.sinusoidsFactors that aid venous return include all except ________.urinary outputWhich of the following blood pressure readings would be indicative of hypertension?170/96 in a 50-year-old manSelect the correct statement about factors that influence blood pressure..Excess red cell production would cause a blood pressure increaseMechanisms that do not help regulate blood pressure include ________.the dural sinus reflexThe velocity of blood flow is ________.slowest in the capillaries because the total cross-sectional area is the greatestSelect the correct statement about blood flow.Blood flow through the entire vascular system is equivalent to cardiac output.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 armCerebral blood flow is regulated by ________.intrinsic autoregulatory mechanismsA patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except ________.decreased size of the heart muscle43) 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 volumeSecondary hypertension can be caused by ________.arteriosclerosisWhere in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?lungsNormal average blood pressure for a newborn baby is ________.90/55If blood pressure is almost normal in a person who has lost blood, does that mean the tissues are receiving adequate blood flow?not necessarilyWhat do the ductus arteriosus and the foramen ovale become at birth?ligamentum arteriosum; fossa ovalisWhich of the following would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?a local increase in histamineArteriole blood pressure increases in response to all but which of the following?falling blood volumeThe baroreceptors in the carotid sinus and aortic arch are sensitive to which of the following?changes in arterial pressureWhich of the following is not one of the three main factors influencing blood pressure?emotional stateWhich of the following chemicals does not help regulate blood pressure?nitric acidWhich statement best describes arteries?) All carry blood away from the heart.Which tunic of an artery contains endothelium?tunica intimaPermitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________.capillariesThe circulatory route that runs from the digestive tract to the liver is called ________.hepatic portal circulationThe arteries that are also called distributing arteries are the ________.) muscular arteriesAldosterone will ________.promote an increase in blood pressureThe pulse pressure is ________.systolic pressure minus diastolic pressureWhich of the following signs of hypovolemic shock is a relatively late sign?rapidly falling blood pressureWhich of the following is likely during vigorous exercise?Capillaries of the active muscles will be engorged with bloodWhich 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.Which of the following is true about veins?Veins are called capacitance vessels or blood reservoirs.Which of the following processes provides a long-term response to changes in blood pressure?renal regulationPeripheral resistance ________.increases as blood viscosity increasesBrain blood flow autoregulation ________.is abolished when abnormally high CO2 levels persistBlood flow to the skin ________.increases when environmental temperature risesWhich 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 pressureWhich of the following is a type of circulatory shock?vascular, due to extreme vasodilation as a result of loss of vasomotor toneWhich tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation?tunica mediaThe influence of blood vessel diameter on peripheral resistance is ________.significant because resistance is inversely proportional to the fourth power of the vessel radiusThe form of circulatory shock known as hypovolemic shock is ________.shock that results from large-scale loss of blood volume, or after severe vomiting or diarrheaIn the dynamics of blood flow through capillaries, hydrostatic pressure ________.is the same as capillary blood pressureThe hepatic portal vein ________.carries nutrient-rich blood to the liverThe term ductus venosus refers to ________.) a special fetal vessel that allows umbilical blood to bypass the liverWhich of the choices below does not explain why low capillary pressures are desirable?Low blood pressure is more desirable than high blood pressure.Which of the choices below does not involve tissue perfusion?blood clottingWhich of the following do not influence arterial pulse rate?the vessel selected to palpateWhich of the following are involved directly in pulmonary circulation?right ventricle, pulmonary artery, and left atriumHistologically, the ________ is squamous epithelium supported by a sparse connective tissue layer.tunica intimaThe arteries that directly feed into the capillary beds are called ________.arteriolesFenestrated capillaries ________.are not found in the brainModified capillaries that are lined with phagocytes are called ________.sinusoidsFactors that aid venous return include all except ________.urinary outputWhich of the following blood pressure readings would be indicative of hypertension?170/96 in a 50-year-old manSelect the correct statement about factors that influence blood pressure.Excess red cell production would cause a blood pressure increase.Mechanisms that do not help regulate blood pressure include ________.the dural sinus reflexThe velocity of blood flow is ________.slowest in the capillaries because the total cross-sectional area is the greatestSelect the correct statement about blood flow.Blood flow through the entire vascular system is equivalent to cardiac output.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 armCerebral blood flow is regulated by ________.intrinsic autoregulatory mechanismsA patient with essential hypertension might have pressures of 200/120 mm Hg. This hypertensive state could result in all of the following changes except ________.decreased size of the heart muscleThe 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 volumeSecondary hypertension can be caused by ________.arteriosclerosisWhere in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?lungsNormal average blood pressure for a newborn baby is ________.) 90/55If blood pressure is almost normal in a person who has lost blood, does that mean the tissues are receiving adequate blood flow?not necessarilyWhat do the ductus arteriosus and the foramen ovale become at birth?ligamentum arteriosum; fossa ovalisWhich of the following would not result in the dilation of the feeder arterioles and opening of the precapillary sphincters in systemic capillary beds?a local increase in histamineArteriole blood pressure increases in response to all but which of the following?falling blood volumeThe baroreceptors in the carotid sinus and aortic arch are sensitive to which of the followingchanges in arterial pressure