Chapter 12 Flashcards
_______ are tubes that deliver blood to the tissues.
a. Veins
b. Blood vessels
c. Lymph vessels
d. Venules
b. Blood vessels
_______ carry blood from the ventricles of the heart to the tissues and
organs of the body.
a. Capillaries
b. Veins
c. Arterioles
d. Arteries
d. Arteries
When plasma enters the tissues, it is called _______ fluid.
a. tissue
b. blood
c. interstitial
d. both A and C
d. both A and C
_______ are the smallest branches of an artery and are important in
regulating blood pressure.
a. Venules
b. Capillaries
c. Arterioles
d. Micro-arteries
c. Arterioles
_______ permit materials to be exchanged between the blood and tissues.
a. Capillaries
b. Veins
c. Arterioles
d. Arteries
a. Capillaries
The _______ is a smooth muscle cell that regulates the blood supply to each organ and its subdivisions.
a. endothelium
b. tunica media
c. lymph node
d. precapillary sphincter
d. precapillary sphincter
Arterioles and venules are connected by _______ in the liver, spleen, and bone marrow.
a. tunics
b. sinusoids
c. capillaries
d. hepatic veins
b. sinusoids
The _______ circulation connects the heart and all the organs and tissues.
a. pulmonary
b. systemic
c. artery
d. lymphatic
b. systemic
The pulmonary _______ deliver blood to the lungs.
a. veins
b. venules
c. arteries
d. capillaries
c. arteries
The left ventricle pumps blood into the largest artery in the body, the _______.
a. femoral artery
b. radial artery
c. carotid
d. aorta
d. aorta
The aortic arch curves from the ________ and makes a U-turn.
a. left ventricle
b. abdominal aorta
c. ascending aorta
d. thoracic aorta
c. ascending aorta
The _______ aorta is the region of the aorta below the diaphragm.
a. ascending
b. abdominal
c. thoracic
d. descending
d. descending
The _______ receives blood from the upper portions of the body.
a. inferior vena cava
b. superior vena cava
c. carotid vein
d. descending aorta
b. superior vena cava
The two _______ pass through the foramen magnum and join on the
ventral surface of the brain stem.
a. carotid arteries
b. basilar arteries
c. jugular veins
d. vertebral arteries
d. vertebral arteries
The _______ delivers blood from the organs of the digestive system to the liver.
a. hepatic portal vein
b. basilar artery
c. radial artery
d. aortic arch
a. hepatic portal vein
Blood delivered to the intestine by the _______ enters capillaries in the
intestinal wall.
a. mesenteric arteries
b. venous sinuses
c. portal veins
d. carotid arteries
a. mesenteric arteries
Which of the following veins carries blood rich in oxygen?
a. Jugular
b. Coronary
c. Pulmonary
d. None of the preceding answers is correct;
veins always carry blood poor in oxygen
c. Pulmonary
Blood pressure can be calculated by multiplying _______.
a. blood flow × blood viscosity
b. blood flow × peripheral resistance
c. pulmonary pressure × aortic pressure
d. blood volume × blood flow
b. blood flow × peripheral resistance
Low blood pressure stimulates the kidneys to release the enzyme _______,which acts on the plasma protein _______.
a. aldosterone; angiotensin
b. angiotensin II; renin estrogen
c. renin; angiotensinogen
d. renin; angiotensin III
c. renin; angiotensinogen
Important function(s) of the lymphatic system is/are _______.
a. to maintain fluid balance
b. to defend the body against disease by
producing lymphocytes
c. to absorb lipids from the intestine
d. all of the preceding answers are correct
d. all of the preceding answers are correct
_______ conduct blood back toward the heart.
a. Arteries
b. Arterioles
c. Capillaries
d. Veins
d. Veins
From capillaries, blood passes into _______.
a. arterioles
b. venules
c. arteries
d. large veins
b. venules
The wall of an artery or vein has three layers, or _______.
a. tunics
b. capillaries
c. sphincters
d. metarterioles
a. tunics
Most _______ have valves that permit the flow of blood toward the heart,
even against the force of gravity.
a. arteries
b. sinuses
c. veins
d. capillaries
c. veins
_______ in the wall of an arteriole allows it to constrict or relax, changing
its radius.
a. Endothelium
b. Smooth muscle
c. Cardiac muscle
d. Connective tissue
b. Smooth muscle
_______ are small vessels that directly link arterioles with venules.
a. Arteries
b. Veins
c. Metarterioles
d. Capillaries
c. Metarterioles
Blood flows through a continuous network of blood vessels that forms a double circuit; the _______ circulation connects the heart and lungs.
a. pulmonary
b. systemic
c. aortic
d. cardiac
a. pulmonary
The pulmonary _______ return the blood, rich in oxygen, to the left
atrium.
a. arteries
b. capillaries
c. veins
d. arterioles
c. veins
The sequence of blood flow through the pulmonary circulation is
_______.
a. right atrium → left atrium → right
ventricle → pulmonary artery →
pulmonary capillaries → pulmonary veins
b. right ventricle → left atrium → right
atrium → pulmonary artery → pulmonary
capillaries → pulmonary veins
c. right atrium → right ventricle →
pulmonary artery → pulmonary
capillaries → pulmonary veins → left
atrium
d. left atrium → right atrium → right
ventricle → pulmonary capillaries →
pulmonary veins → pulmonary artery
c. right atrium → right ventricle →
pulmonary artery → pulmonary
capillaries → pulmonary veins → left
atrium
The _______ passes through the chest cavity.
a. aortic arch
b. thoracic aorta
c. ascending aorta
d. abdominal aorta
b. thoracic aorta
The _______ receives blood returning from below the level of the
diaphragm.
a. inferior vena cava
b. superior vena cava
c. carotid arteries
d. internal jugular
a. inferior vena cava
Blood from the venous sinuses empties into the _______ at both sides of
the neck.
a. carotid arteries
b. brachiocephalic veins
c. internal jugular veins
d. basilar artery
c. internal jugular veins
The hepatic portal vein delivers blood to the _______.
a. intestine
b. inferior vena cava
c. kidney
d. liver
d. liver
Blood returning from the brain passes through the brachiocephalic vein
and then passes into the _______.
a. carotid arteries
b. superior vena cava
c. internal jugular veins
d. circle of Willis
b. superior vena cava
Blood pressure depends on _______.
a. blood flow × blood viscosity
b. blood flow × peripheral resistance
c. pulmonary pressure × aortic pressure
d. blood volume × blood flow
b. blood flow × peripheral resistance
_______ is an increase in blood vessel diameter that decreases resistance
to blood flow.
a. Vasodilation
b. Blood pressure
c. Vasoconstriction
d. Viscosity
a. Vasodilation
Baroreceptors _______.
a. are sensitive to changes in blood pressure
b. respond to changes in viscosity
c. are venous receptors that maintain
pressure in veins
d. produce aldosterone
a. are sensitive to changes in blood pressure
Angiotensin II acts indirectly to maintain blood pressure by increasing the
synthesis and release of the hormone _______ by the adrenal glands.
a. renin
b. aldosterone
c. fibrinogen
d. norepinephrine
b. aldosterone
Lymphatic vessels from all over the body, except the right upper quadrant,
deliver lymph to the _______.
a. carotid arteries
b. superior vena cava
c. thoracic duct
d. right lymphatic duct
c. thoracic duct
The _______ is a pinkish-gray lymphatic organ located in the upper
thorax. It plays a key role in the body’s immune processes.
a. thymus gland
b. thyroid
c. liver
d. spleen
a. thymus gland
