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Chapter 12: Heart
Terms in this set (41)
Which vessels empty into the left atrium?
Right pulmonary veins
Left pulmonary veins
The right and left ventricles are divided from each other by the _____ septum.
The valves that separate the upper and lower chambers of the heart are called ______ valves.
The artery that exits the aorta and then divides into the circumflex artery, the anterior interventricular artery, and a marginal artery is the _____ _____ artery.
The anterior ventricular artery, the circumflex artery, and the marginal artery are branches of the ______ ______ _____.
left coronary artery
The branch of the left coronary artery that travels down the front of the heart to the apex of the heart is the ____ ____ artery.
The right coronary artery runs along the _____ sulcus and supplies blood to the _______.
coronary; right ventricle
The blood vessels that collect venous drainage from the heart are the ______ _____.
The left and right pulmonary ______ empty into the left atrium.
The valves that prevent the backflow of blood into the atria are called _____ valves.
What is the the action of an "atrial systole"
What is the the action of an "atrial diastole"
What is the the action of an "ventricular systole"
What is the the action of an "ventricular diastole"
What is the order for the three layers of the heart wall from deepest to superficial.
The histology of the heart may be described by which phrases?
Composed mostly of cardiac muscle tissue
Involuntary muscle tissue
The heart is predominately composed of _____ muscle tissue.
Identify the characteristics of cardiac muscle cells.
Intercalated discs between cells
Elongated, branching cells
Centrallu located nuclei
Te human heart consists of ____ chambers.
The organ that separates pulmonary and systemic circulation and maintains the flow of blood through the circuits is the _________.
The thick end-to-end connections between cardiac muscle cells are called ______ _____.
Blood leaving the right ventricle would flow through the following structures in which order, starting with the first at the top?
1) Pulmonary Valve
2) Pulmonary truck
3) Pulmonary Artery
4) Pulmonary Veins
5) Left Atrium
6) Bicuspid Valve
The right and left coronary arteries arise from the ______.
When does blood flow through the coronary circulation increase?
In the posterior atrioventricular sulcus is a large vein called the ____ that collects venous drainage from all of the coronary veins and drains into the right atrium.
Identify the functions of the heart.
Adjusting blood supply depending on tissue needs.
Moving blood in one direction.
Separating pulmonary and systemic circulations.
Generating blood pressure.
What are the channels in intercalated discs that allow ions to flow directly form the cytoplasm of cone cardiac cell to another called?
The thin-walled superior chambers of the heart are called the right and left _____.
The thick inferior chambers of the heart that pump blood into the arteries are called _____.
List in order the events of the cardiac conduction system, starting with the first at the top.
1) The SA node fires.
2) Excitation spreads through the artial myocardium.
3) AV node fires.
4) Excitation spread down the AV bundle.
5) Purkinje fibers distribute excitation through the ventricular myocardium.
The blood vessels that supply nutrients and oxygen only to the heart muscle make up the specific type of circulation called the _____ circulation.
At a given point in time, blood flows in the heart from _____.
both atria to both ventricles
What is the double-layered sac that surrounds the heart called?
The double-walled sac enclosing the heart is called the ________.
The visceral and parietal pericardium are collectively called the ______ pericardium.
The ____ pericardium defines the outer boundary of the pericardial cavity, whereas the ____ pericardium is actually the outer part of the heart wall.
What is the period in which a heart chamber relaxes and fills with blood called?
The two-part lining of the pericardial cavity is called the ______ pericardium.
The chambers of the heart located at the base of the heart are the _______.
Which groove encircles the heart, separating the atria from the ventricles?
The groove that is between the ventricles on the back of the heart is the posterior _____ sulcus.
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