Ch 19 multiple choice
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Created by:
KatieHopper on July 16, 2011
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30 terms
Terms | Definitions |
|---|---|
 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 regulation |
| Peripheral resistance ________. | increases as blood vessel diameter increases |
| Brain blood flow autoregulation __________. | is abolished when abnormally high CO2 levels persist |
| Blood flow to the skin ________. | increases when body temperature drops so that the skin does not freeze |
| Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation? | Tunica media |
| The influence of blood vessel diameter on peripheral resistance is ________. | significant because resistance is inversely proportional to the fourth power of the vessel radius |
| The form of circulatory shock known as hypovolemic shock is ________. | shock that results from large-scale loss of blood volume, or after severe vomiting or diarrhea |
| In the dynamics of blood flow through capillaries, hydrostatic pressure ________. | is the same as capillary blood pressure |
| The hepatic portal vein ________. | carries nutrient-rich blood to the liver |
| The term ductus venosus refers to ________. | a special fetal vessel that allows umbilical blood to bypass the liver |
| Histologically, the ________ is squamous epithelium supported by a sparse connective tissue layer. | tunica intima |
| The arteries that directly feed into the capillary beds are called ________. | arterioles |
| Fenestrated capillaries ________. | are not found in the brain |
| Modified capillaries that are lined with phagocytes are called ________. | sinusoids |
| Which of the following blood pressure readings would be indicative of hypertension? | 140/90 in a 70-year-old woman |
| Select the correct statement about blood flow. | Blood flow through the entire vascular system is equivalent to cardiac ooutput |
| Secondary hypertension can be caused by ________. | COPD, Valvular disease, scleroderma, recurrent thromboemboli. |
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