Human Anatomy (lecture quiz #7)

Pectinate muscles are found on the Anterior wall of the right atrium Posterior wall of the right ventricle Anterior wall of the right ventricle Anterior wall of the right and left atria Posterior wall of the right and left ventricles

Anterior wall of the right and left atria

Valves in veins Make the use of a skeletal muscle pump unnecessary for venous blood flow Are the leading cause of high blood pressure Are found only in the largest veins Cause venous blood flow to go in only one direction Are formed of the tunica media

Cause venous blood flow to go in only one direction

The papillary muscles attach to the cusps of the atrioventricular valves by means of the Pectinate muscles Trabeculae carneae Conus arteriosus Chordae tendineae Tricuspid valve

Chordae tendineae

The end of the aorta occurs when the vessel bifurcates into the Brachiocephalic artery Subclavian arteries Common iliac arteries Common carotid arteries None of these answers is correct

Common iliac arteries

As an arterial pathway moves farther from the heart, the arteries Get smaller Get larger Show no change in their lumen size

Get smaller

The layer of the heart wall composed of cardiac muscle tissue is the Pericardium Myocardium Endocardium Pericardial cavity Pectinate muscle

Myocardium

The heart valves Stabilize and hold the arteries leaving the heart Permit the passage of blood in one direction Separate the right and left sides of the heart Are only used in the fetal heart Direct the conduction impulse through the heart muscle

Permit the passage of blood in one direction

Which carries oxygenated blood from the lungs to the heart? Pulmonary arteries Pulmonary veins Pulmonary trunk Inferior vena cava Superior vena cava

Pulmonary veins

The heartbeat is initiated by the cardiac muscle fibers of the _______________ node.

Sinoatrial

The left atrium and left ventricle are part of which circuit of the cardiovascular system? Pulmonary circuit Cardio circuit Coronary circuit Systemic circuit Schwann circuit

Systemic circuit

The function of the coronary sinus is to Connect the top and bottom halves of the heart Guide the aorta out of the heart Guide the inferior vena cava into the right atrium Take blood from the coronary circulation to the right atrium Shunt blood from the right atrium to the left atrium

Take blood from the coronary circulation to the right atrium

All cardiac veins eventually drain into the coronary sinus for return of the blood from the myocardium to the right atrium. True False

True

Normal passage of blood from the atria to the ventricles only happens if the atrioventricular valves are open. True False

True

Blood pressure is lowest in Arteries Veins Arterioles Venules Capillaries

Veins

The brachiocephalic veins are formed by the a: Internal jugular veins b: Right sigmoid sinus c: Left sigmoid sinus d: Subclavian veins e: Traight sinus a, b, e a, c, d b, c, e a, d b, d, e

a, d

Because of their role in material exchanges, the _______________ are considered to be the functional units of the cardiovascular system.

capillaries

The pulmonary arteries carry _______________ blood to the lungs.

deoxygenated

Another name for the visceral layer of the serous pericardium is ________________.

epicardium

The ______________ circuit consists of the chambers on the right side of the heart as well as the pulmonary arteries and veins.

pulmonary

The inferior chambers of the heart are called ________________.

ventricles