Download Heart Last modified January 9, 2017 at 5:21 am

Heart
Question # 1 Atria differ from ventricles in that they
A) are larger.
B) have thicker walls with more muscles.
C) receive blood from veins.
D) have a higher blood pressure.
E) empty through the semilunar valves.
Question # 2 The coronary vessels
A) supply and drain the heart muscle.
B) bypass the heart ventricles.
C) send blood directly to the lungs.
D) are not really necessary because the heart can get its blood supply from the "inside."
E) lead directly from the atria to the ventricles.
Question # 3 The receiving zone of a vertebrate heart is
A) a plaque.
B) the aorta.
C) an atrium.
D) a capillary bed.
E) all of the above
Question # 4 The bicuspid (mitral) valve is located between the
A) left and right atria.
B) right atrium and right ventricle.
C) the left and right ventricles.
D) left atrium and left ventricle.
E) left ventricle and the aorta.
Question # 5 The cardiac muscle of the heart is called the
A) pericardium.
B) endocardium.
C) endothelium.
D) chordae tendineae.
E) myocardium.
Part 2:
Question # 1 What occurs during systole?
A) Oxygen-rich blood is pumped to the lungs.
B) The heart muscle tissues contract.
C) The atrioventricular valves suddenly open.
D) Oxygen-poor blood from all body regions except the lungs flows into the right atrium.
E)
Question # 2 The pulmonary circulation
A) involves the hepatic portal vein.
B) moves oxygen-rich blood to the kidneys.
C) includes the coronary arteries.
D) leads to, through, and from the lungs.
E) all of the above
Question # 3 In the human systemic circuit, blood will pass through all but which of the following?
A) liver
B) limbs
C) lungs
D) digestive organs
E) brain
Question # 4 Which of the following statements is true?
A) Arteries carry only oxygenated blood.
B) The systemic circuit leaves the heart from the left ventricle.
C) Blood passes through only one capillary bed on its trip through the systemic circuit.
D) Platelets survive a longer time than erythrocytes.
E) The heart is able to pick up the oxygen it needs as the blood flows through it.
Question # 5 If a physician hears two "lub" sounds instead of one, then which of the following conditions is true?
A) The semilunar valves are not closing simultaneously.
B) The atrial blood is flowing backward and causing the extra sound.
C) The atrioventricular valves are not closing at the same time.
D) The AV and semilunar valves are not closing at the same time.
E) No such double sound has ever been heard.
Question # 6 The aorta leaves the
A) left atrium.
B) a. left atrium. b. right atrium. right atrium.
C) left ventricle.
D) right ventricle.
Question # 7 The pulmonary artery carries blood away from the
A) aorta.
B) right atrium.
C) right ventricle.
D) left atrium.
E) left ventricle.
Question # 8 Blood from the body is first received by the heart in the
A) coronary vein.
B) left atrium.
C) right ventricle.
D) right atrium.
E) left ventricle.
Part 3:
Question # 1 An artificial pacemaker supplements the actions of
A) sympathetic nerves.
B) the atrioventricular node.
C) the medulla oblongata.
D) the sinoatrial node.
E) the heart muscle itself.
Question # 2 Which of the following statements is false?
A) A heart will stop beating when the nerves to the heart are severed.
B) Some cardiac muscle cells are self-excitatory.
C) The pacemaker of the heart is the sinoatrial node.
D) Cardiac muscles join end to end to allow rapid communication.
E) Cardiac muscles contract essentially in unison.
Question # 3 The heart
A) will contract as a result of stimuli from the sinoatrial node.
B) contracts only as a result of nerve stimulation from the central nervous system.
C) is activated primarily through the autonomic nervous system.
D) pulse is primarily under the control of the atrioventricular node.
E) is completely independent of all nervous control.
Question # 4 Heart excitation originates in the
A) atrioventricular node.
B) intercalated disk.
C) sinoatrial node.
D) pericardium.
E) all of the above
Question # 5 Which of the following has the highest blood pressure?
A) right ventricle
B) right atrium
C) left ventricle
D) left atrium
E) pulmonary circulation
Question # 6 The diastolic pressure for a normal young adult would be
A) 60 mmHg.
B) 80 mmHg.
C) 100 mmHg.
D) 120 mmHg.
E) 140 mmHg.
Question # 7 The part of the brain responsible for blood pressure is the
A) medulla oblongata.
B) cerebellum.
C) cerebrum.
D) corpus callosum.
E) pons.
Part 4:
Question # 1 Which of the following has the highest blood pressure?
A) right ventricle
B) right atrium
C) left ventricle
D) left atrium
E) pulmonary circulation
Question # 2 The diastolic pressure for a normal young adult would be
A) 60 mmHg.
B) 80 mmHg.
C) 100 mmHg.
D) 120 mmHg.
E) 140 mmHg.
Question # 3 The part of the brain responsible for blood pressure is the
A) medulla oblongata.
B) cerebellum.
C) cerebrum.
D) corpus callosum.
E) pons.
Question # 4 Blood pressure is highest in the
A) aorta.
B) pulmonary artery.
C) capillary bed.
D) subclavian vein.
E) lower vena cava.
Part 5:
Question # 1 By controlling their musculature, which of the following can vary the resistance to blood flow?
A) arteries
B) veins
C) capillaries
D) arterioles
E) all of the above
Question # 2 Because of their great elasticity, which of the following can function as blood volume reservoirs during
times of low metabolic output?
A) veins and venules
B) arteries
C) arterioles
D) capillaries
E) all of the above
Question # 3 Which controls the distribution of blood?
A) arteries
B) arterioles
C) capillaries
D) venules
E) veins
Question # 4 Which are pressure reservoirs with low resistance to flow?
A) arteries
B) arterioles
C) capillaries
D) venules
E) veins
Question # 5 Which are highly distensible reservoirs for blood volume?
A) arteries
B) arterioles
C) capillaries
D) venules
E) veins
Question # 6 The greatest volume of blood is found in the
A) aorta and arteries.
B) capillaries.
C) veins.
D) lungs.
E) heart.
Question # 7 Which of the following is NOT found in an arteriole?
A) elastic layer
B) basement membrane
C) smooth muscle
D) valve
E) endothelium
Question # 8 By controlling their musculature, which vessels can vary the resistance to blood flow?
A) arteries
B) veins
C) capillaries
D) arterioles
E) all of the above
Question # 9 The greatest drop in blood pressure occurs in the
A) arteries.
B) arterioles.
C) capillaries.
D) venules.
E) veins.
Question # 10 In its travel through the human body, blood usually continues on from capillaries to enter
A) arterioles.
B) venules.
C) arteries.
D) veins.
E) other capillaries.
Part 6:
Question # 1 At the arteriole end of the capillary, more fluid leaves the capillary than enters as a result of
A) osmotic pressure.
B) hydrostatic force.
C) gap junctions.
D) vasodilation.
E) all of the above
Question # 2 The blood makes "pickups" and "deliveries" MOST DIRECTLY to
A) body cells.
B) lymph.
C) interstitial fluid.
D) non-blood tissue.
E) organs.
Question # 3 The interstitial fluid is
A) a reservoir.
B) the extracellular fluid.
C) supplied by the blood.
D) similar to sea water.
E) all of the above
Question # 4 Extracellular fluid contains all but which of the following?
A) erythrocytes
B) ions
C) white blood cells
D) lymph
E) water
Part 7: (For Answers, See Blood: Part 4).
Question # 1 Hemostasis in vertebrates includes all of the following EXCEPT
blood clot formation.
vessel constriction.
release of iron to aid in the clumping of platelets.
vessel spasms.
platelets releasing substances that cause them to attract each other.
Question # 2 Which of the following is NOT involved in the formation of a blood clot?
plasma cells
fibrinogen
thrombin
fibrin
All of the above are involved.
Question # 3 Which of the following is an enzyme?
fibrinogen
fibrin
prothrombin
thrombin
plasminogen
Question # 4 If you are blood type A,
you carry antibodies for type B blood.
you carry markers for type B blood.
you can donate blood to a person with type O blood.
you can receive blood from a person with type AB blood.
none of the above
Question # 5 Type A blood will NOT agglutinate when mixed with
type B blood.
type A blood.
type AB blood.
type O blood.
both A and AB, but will clump with types B and O.
Question # 6 Which blood type is the universal donor?
A+
B
AB+
AB
O
Question # 7 Which blood type is the universal recipient?
A
B+
AB+
AB
O+
Question # 8 In the Rh disease
the mother must be positive and her first and second children positive.
the mother must be negative and her first and second children positive.
the mother must be negative and her first and second children negative
the mother must be positive and her first and second children negative.
the mother and the father must both be negative and the child positive.
Part 8:
Question # 1 The most common vascular disease is
A) phlebitis.
B) hypertension.
C) leukemia.
D) sickle cell anemia.
E) a stroke.
Question # 2 A stroke is a rupture of a blood vessel in the
A) leg.
B) brain.
C) heart.
D) lung.
E) internal organs.
Question # 3 In atherosclerosis
A) abnormal multiplication of smooth muscle cells in blood vessels occurs.
B) the arterial walls fill with connective tissue.
C) the lipids in the bloodstream become embedded in the walls of the endothelial lining.
D) a fibrous net covers the entire abnormal area
E) all of the above
Question # 4 The mineral associated with atherosclerosis is
A) iron.
B) magnesium.
C) cobalt.
D) calcium.
E) iodine.
Question # 5 Cholesterol is believed to be carried by
A) albumin.
B) high-density lipoproteins.
C) low-density lipoproteins.
D) triglycerides.
E) both b and c