Chapter 19 homework

false

In modifying cardiac activity, the parasympathetic innervation comes from the cardioacceleratory center in the brain and the sympathetic innervation comes from the cardioinhibitory center in the brain.

1. Right Atrium 2. Right Ventricle 3. Left Atrium 4. Left Ventricle

Match the vessel with its associated chamber. 1. Inferior and superior vena cava 2. Pulmonary trunk 3. Pulmonary veins 4. Aorta

1.Blood leaves the right side of the heart. 2.Blood enters the pulmonary arteries and travels to the lungs. 3.Blood enters the pulmonary veins. 4.Blood enters the left side of the heart. 5.Blood enters the systemic arteries. 6.Blood delivers oxygen to the tissues, and then enters systemic veins.

Put the pattern of circulation into the correct order, beginning with the pulmonary circulation.

Right atrium

Oxygen-poor blood enters which chamber of the heart?

left atrium, left ventricle

Oxygenated blood flows from the __________ to the __________ before being pumped into the systemic circulation

False

Pulmonary arteries carry highly oxygenated blood.

true

Serous fluid secreted by both the parietal and visceral layers of the pericardium, and released into the pericardial cavity, lubricates the membranes and facilitates the almost frictionless movement of the heart when it beats.

false

The coronary sinus is a large vein that collects venous blood from all areas of the heart and drains it directly into the left atrium of the heart.

epicardium

The external layer of the heart wall is the

Serous

The inner layer of the pericardium is a thin, transparent layer of simple squamous epithelium called the __________ pericardium.

False

The only arteries in the body that carry oxygen-poor blood are the coronary arteries

fibrous

The pericardium consists of a tough, fibrous connective tissue outer layer called the __________ pericardium.

tricuspid valve

The right atrioventricular valve is also called the

Left Ventricle

The wall of the __________ is much thicker than any other chamber in the heart which allows for stronger contractions to pump blood through the systemic circulation.

Arteries carry blood away from the heart. Veins carry blood back to the heart. Capillaries are the sites of exchange between the blood and the lungs or body cells.

What are the primary blood vessel types and their functions? Check all that apply.

Purkinje fibers Atrioventricular bundle Atrioventricular (AV) node Sinoatrial (SA) node

What are the structures included in the heart's conduction system? Check all that apply.

pacemaker

The sinoatrial (SA) node is referred to as the _____________ of the heart.

Match the heart valve with its description.

1. Between right atrium and right ventricle - Tricuspid valve 2. Between left ventricle and ascending aorta -Aortic semilunar valve 3. Between right ventricle and pulmonary trunk -Pulmonary semilunar valve 4. Between left atrium and left ventricle-Bicuspid valve

Oxygenated blood enters the left atrium. Deoxygenated blood from the systemic circulation enters the right atrium. Once in the heart, deoxygenated blood is pumped from the right atrium to the right ventricle.

Check all of the ways in which the heart chambers are involved in pulmonary circulation.

Aortic valve

Left ventricular contraction propels blood through which valve?

1. Epicardium 2. Myocardium 3. Endocardium 4. Myocardium 5. Endocardium 6. Epicardium

Match the component of the heart wall with the correct explanation or definition. 1. Thin serous membrane of the outer surface of the heart 2. Thick middle layer of the heart 3. Covers surfaces of the heart valves 4. Composed of cardiac muscle cells 5. The inner surface of the heart 6. Also known as the visceral pericardium

1. Atria 2. Ventricles 3. Septum 4. Fibrous Skeleton

Match the component of the heart with its description. 1. Chambers of the heart that receive blood from the venous system 2. Chambers of the heart that pump blood into the arterial system 3. Separates the right atrium and ventricle from the left atrium and ventricle 4. Separates the atria from the ventricles

1 Fibrous layer of the pericardial sac 2 Serous layer of the pericardial sac 3 Pericardial cavity 4 Epicardium 5 Myocardium 6 Endocardium

Place the heart wall structures in the order you would find them, beginning with the most superficial one first.