Ch.21 hw Flashcards
Which of the following is the most important method of capillary exchange?
simple diffusion
The largest driving force for pulling fluid from the interstitial spaced back into the capillaries is
blood colloid osmotic pressure
The volume of blood that circulates through the systemic (or pulmonary) blood vessels per minute is called
cardiac output
cardiac output is dependent on both
heart rate and stroke volume
Which of the following would not result in an increase in arterial blood pressure?
increased arteriolar vasodilation
Which of the following is not a contribution of the cardiovascular system to other body systems?
blood carries carbon dioxide to body tissues and removes oxygen for use by other organs
The cardiovascular center is located
in the medulla oblongata
Which of the following would not occur in response to hypovolemic shock?
release of atrial natriuertic peptide
All the veins of the systemic circulation eventually drains into the
superior and inferior cava and coronary sinus
The pulmonary trunk divides into
right and left pulmonary arteries
What is the function of the hepatic portal system?
transport of venous blood from the gastrointestinal tract and spleen to the liver
Which statement is not true of venous return to the heart?
the respiratory pump increases venous return to the left atrium
Which statement is true about bulk flow?
Blood hydrostatic pressure is lower at the venous end of a capillary
Which is not a feature of capillaries?
connect arterioles to veins
Tunica media of an artery is comprised of
smooth muscle cells and connective tissue
Most of the capillaries in the body are
Continuous capillaries
While you are at rest, the greatest quantity of blood will be found in the
systemic veins and venules
Large proteins and red blood cells can pass
through intercellular clefts in sinusoids
In the metarterioles, smooth muscle tissue helps to regulate
the amount of blood flowing into the capillaries and vascular resistance
The recoil of ____ helps to keep blood flowing during ventricular relaxation
elastic arteries
Which does not increase blood pressure?
atrial natriuretic peptide
Which of the following assist veins in returning blood to the heart?
valves, skeletal muscle pump and respiratory pump
Net filtration is due to
blood hydrostatic pressure and blood colloid osmotic pressure
Which does not increase blood pressure?
increased parasympathetic impulses
