Ch 19 multiple choice
| Which of the following is not one of |
the three main factors influencing blood pressure?
| Which of the following chemicals |
does not help regulate blood pressure?
| Which statement best describes |
|All carry blood away from the heart|
| Which tunic of an artery contains|
| Permitting the exchange of nutrients |
and gases between the blood and tissue cells is the primary function of ________.
| 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 ________.
|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|
|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 are called capacitance vessels or blood reservoirs|
| Which of the following processes|
provides a long-term response to changes in blood pressure?
|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.
| The arteries that directly feed into the |
capillary beds are called ________.
|Fenestrated capillaries ________.||are not found in the brain|
| Modified capillaries that are lined with |
phagocytes are called ________.
| 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 through the entire vascular system is equivalent to cardiac ooutput|
| Secondary hypertension can be |
caused by ________.
| COPD, |