Chpt 15 Quiz 1

What is the effect of vasoconstriction?

• Heart rate decreases

• Peripheral resistance decreases

• Viscosity increases

• Blood pressure increases

Blood flowing from the vena cavae to the pulmonary trunk passes through what series of structures?

• Right ventricle, pulmonary valve, right atrium, tricuspid valve

• Right atrium, tricuspid valve, right ventricle, pulmonary valve

• Right atrium, pulmonary valve, right ventricle, tricuspid valve

• Right ventricle, tricuspid valve, right atrium, pulmonary valve

In which direction does the apex of the heart point?

• Projects superiorly and to the left side of the body

• Projects superiorly and to the right side of the body

• Projects inferiorly and to the left side of the body

• Projects inferiorly and to the right side of the body

What is the normal pacemaker of the heart?

• AV bundle

• Sinoatrial node

• Atrioventricular node

• Purkinje fibers

Name the layers of the wall of the heart and surrounding structures from deep to superficial.

• Fibrous pericardium, parietal pericardium, pericardial cavity, epicardium, myocardium, endocardium

• Epicardium, myocardium, endocardium, pericardial cavity, parietal pericardium, fibrous pericardium

• Endocardium, myocardium, epicardium, pericardial cavity, parietal pericardium, fibrous pericardium

• Myocardium, endocardium, epicardium, fibrous pericardium, pericardial cavity, parietal pericardium

What is a function of the pulmonary circuit?

• It carries oxygen-poor blood to the lungs.

• It carries oxygen-poor blood from the tissues.

• It carries oxygen-poor blood to the heart.

• It carries oxygen-poor blood to the tissues.

The pulmonary trunk divides into what two vessels?

• Left and right pulmonary arteries

• Left and right pulmonary veins

• Superior and inferior venae cavae

• Ascending and descending aorta

The aortic baroreceptor senses stretching of the aorta. How will the nervous system respond?

• Increased parasympathetic activity will decrease heart rate.

• Increased sympathetic activity will decrease heart rate.

• Increased parasympathetic activity will increase heart rate.

• Increased sympathetic activity will increase heart rate.

The coronary sinus drains blood from the wall of the heart into the left atrium.

• True

• False

Where is the popliteal artery located?

• In the abdominal cavity

• Deep to the scapula

• In the groin

• Behind the knee