Ch. 19 Blood Vessels hwk qus (exam 2)
In which of the following blood vessels would you expect to find the LEAST amount of carbon dioxide? Hints aorta venae cavae pulmonary vein pulmonary artery
c
elastic arteries are responsible for
the feeling of a pulse
What is the main function of the pulmonary circuit? to release oxygen from the blood to provide oxygen to the lung tissues to oxygenate the blood to provide nutrients to the lung tissues
c
Which statement best describes blood flow through the pulmonary veins? Pulmonary veins bring oxygen-poor blood from lung capillaries toward the heart. Pulmonary veins take oxygen-rich blood to the organs and tissues of the body and then back to the heart. Pulmonary veins carry oxygen-rich blood from lung capillaries to the heart. Pulmonary veins take oxygen-poor blood to the lungs, where the blood can become oxygenated.
c
Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of ________. arterioles veins arteries capillaries
d
Which arteries carry deoxygenated blood? renal arteries aorta carotid arteries pulmonary arteries
d
Which capillaries are the most common in the body? sinusoids anastomoses fenestrated capillaries continuous capillaries
d
Vasodilation will result in increased blood flow to a given tissue. True False
true
muscular arteries are responsible for
vasoconstriction
what are any blood vessels that carry blood toward the heart using valves called?
veins
veins that directly drain blood from capillaries are called
venules
how blood flows through the pulmonary and systemic circuits
- pulmonary capillaries send oxygen rich blood directly to the pulmonary veins - pulmonary veins sends oxygen rich blood to the left side of the heart - the left side of the heart sends oxygen rich blood to the aorta/thoracic aorta - the aorta/thoracic aorta send oxygen rich blood directly to the systemic arteries and capillaries of the body - the system arteries and capillaries of the body send oxygen poor blood to the system veins - systemic veins send oxygen poor blood to the superior/inferior venae cavae - the superior/inferior venae cavae send oxygen poor blood to the right side of the heart - the right side of the heart sends oxygen poor blood to the pulmonary trunk/pulmonary arteries - pulmonary trunk/arteries sends oxygen poor blood to the pulmonary capillaries
The aorta is an example of a(n): elastic artery. muscular artery. vein. arteriole.
a
The kidneys filter the blood; it is necessary for plasma, both fluid and dissolved chemicals, to be rapidly removed from the blood without the removal of larger proteins or cells. Which capillary would be best suited for this filtration? fenestrated capillaries sinusoids continuous capillaries anastomoses
a
Which of the following is true about veins? Veins are called capacitance vessels or blood reservoirs. Up to 35% of total body blood is in venous circulation at any given time. Venous valves are formed from the tunica media. Veins have a small lumen in relation to the thickness of the vessel wall.
a
Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation? tunica media basement membrane tunica externa tunica intima
a
Which type of blood vessel typically LACKS one or more of the three tunics? capillaries veins muscular arteries elastic arteries
a
Which vessels carry blood toward the heart? veins arterioles muscular arteries capillaries
a
what are any blood vessels that carry blood away from the heart called?
arteries
arteries that directly control blood flow to capillaries are called
arterioles
The arteries that are also called distributing arteries are the ________. arterioles muscular arteries elastic arteries capillaries
b
The arteries that directly feed into the capillary beds are called ________. venules arterioles muscular arteries elastic arteries
b
Where are the vasa vasorum located? in the tunica intima of large veins in the tunica externa of large blood vessels in the tunica media of muscular arteries in the tunica media of arterioles
b
Which description most accurately describes the functions of the superior and inferior venae cavae? The superior vena cava primarily drains oxygen-rich blood from the right lung, while the inferior vena cava drains oxygen-poor blood from the organs of the body. The superior vena cava primarily drains oxygen-poor blood from the body above the diaphragm, while the inferior vena cava drains oxygen-poor blood from areas below the diaphragm. The superior vena cava brings oxygen-rich blood to the right atrium, while the inferior vena cava brings oxygen-rich blood from the organs below the diaphragm to the right ventricle. The superior vena cava brings oxygen-rich blood to the heart, while the inferior vena cava carries oxygen-poor blood away from the heart.
b
Which type of blood vessel is the most permeable? fenestrated capillaries sinusoid capillaries continuous capillaries arterioles
b
Which of the choices below explains why the arterioles are known as resistance vessels? They distribute blood to various parts of the body. Their prime function is the exchange of nutrients and wastes between the blood and tissue cells. They contain a large quantity of elastic tissue. The contraction and relaxation of the smooth muscle in their walls can change their diameter.
d
Which of the following is characteristic of veins but not arteries? elastic membranes large muscular tunic vasa vasorum larger internal diameter
d
Which tunic of an artery contains endothelium? basement membrane tunica externa tunica media tunica intima
d
Which type of blood vessels typically are regulated by sphincters? elastic arteries muscular arteries veins capillaries
d
Which vessels carry blood away from the heart? venules veins capillaries arteries
d
arteries that can absorb the most pressure are called
elastic arteries
arteries with a thick tunica media and abundant smooth muscle is called
muscular arteries
