The heart contains four chambers - two atria and two ventricles.
The heart is made up of three layers: the epicardium, myocardium and...
The fibrous and serous pericardium layers are seperated by a thin,...
Bradycardia means rapid heart rate while Tachycardia indicates a...
In the depolarization cycle, ions cross the cell membrane after a...
During one heartbeat. ventricular diastole and ventricular systole...
Stroke volume is the amount of blood ejected with each ventricular...
This is considered the hearts main pacemaker:
The left coronary branches off into the left anterior descending and...
Cardiac output refers to the amount of blood pumped by the ventricles...
Cardiac output is measured by multiplying _____________ by stroke...
Norepinephrine and epinephrine increase heart rate, automaticity, AV...
The semilunar valves include the aortic and the _______.
The mitral valve has two cusps and the tricuspid valve has three.
Atrial fibrillation can cause a loss of atrial kick and cardiac...
When the left ventricle pumps blood through the aortic valve into the...
The ________ arteries supply the heart muscle with blood and oxygen.
Tachycardia is commonly caused by ____________ in the automaticity of...
The three factors that affect stroke volume are preload, afterload and...
Match the branch of the nervous system with the chemicals associated...
The bottom of the heart is known as the ____.
The myocardium makes up the smallest portion of the hearts wall.
The mitral valve is located between the
The _________ nerve carries impulses that slow heart rate and the...
The right atria receives
The SA Node is located in:
The AV node is responsible for delaying impulses from the SA node.
Match each node with the correct impulse rate.
Match the cardiac cycle phase with the correct description.
The __________ valves are the pulmonic and aortic valve. Their cusps...
Isovolumetric relaxation occurs when ventricular pressure falls below...
_________ are cord-like tendons that connect the papillary muscles to...
During ventricular ejection the ventricles eject 70% of the blood.
Backflow of blood from one chamber to another is known as __________.
When a cell is fully depolarized, it attempts to return to its resting...
The atrioventricular valves are:
When the left ventricle contracts it pumps blood through the _______...
The right ventricle pumps blood through the pulmonic valve into the...
The Purkinje fibers extend from the bundle branches into the...
The two branches of the autonomic nervous system are the sympathetic...
The ___________ divides the right and left atrium and helps them...
Give the names of the two atrioventricular (AV) valves.
Because the atria collect blood, their walls are thicker than the...
The entire network of specialized nervous tissue that extends through...
These fibers conduct impulses rapidly through the muscle to assist in...
Cardiac veins collect deoxygenated blood from the capillaries of the...
An athlete's heart usually weighs more than that of the average...
Pericardial effusion, a condition of having excess pericardial...
______________ is a special characteristic of pacemaker cells that...
________ affects cardiac output by shortening diastole and allowing...
The Purkinje fibers can also serve as a pacemaker and are able to...
The ______________ septum seperates the left and right ventricles.
A ____________, or backwards, conduction usually takes longer and can...
Impulses from the bundle of His travel much faster down the left...
___________ specialized myocardial fibers, located just beneath...
In reentry events, where impulses cause depolarization twice in a row...
The heart is supplied by the two branches of the _______ nervous...
An EKG/ECG represents the pumping of the heart.
This phase of the cardiac cycle is in response to ventricular...
After depolarization-repolarization occur, the resulting electrical...
Normal cardiac output is
The action potential is represented by a curve that shows ___________...
The top of the heart, or its base, lies just below the _____ rib.
Cardiac cells at rest are considered ________, meaning that no...
The coronary ostium is _________
What is another name for the cholinergic branch of the autonomic...
Specialized nerve cells in the aorta and the internal carotid arteries...
_______________ is/ are the bundle of cardiac muscle fibers that pass...
When cell membranes separate different concentrations of ions, such as...
The cardiac veins join to form an enlarged vessel called the ________,...
Circulation of blood through a network of minor vessels that become...
The heart is located in the ___________ cavity.
What age does a child have to reach before his/ her heart is located...
An action potential curve shows the electrical changes in a _________...
A network of anastomoses is called __________.
The parasympathetic branch serves as the hearts:
Impulses that begin below the AV node can ____________ This is...
The layer of connective tissue that surrounds the heart is called...
____________ refers to blood flow that reaches the upper and...
During diastole, the ventricles contract and the atria relaxes.
____________ is the reconnection of two streams that previously...
This ability depends on how much the muscle fibers are stretched at...
Depolarization-repolarization consists of four cycles.
Partial depolarization due to an injured pacemaker cell can lead to...
The tissue surrounding the AV node is called __________ tissue
The __________ artery supplies oxygenated blood to the lateral walls...
When triggered activity occurs, the resultant depolarization is called...
The coronary arteries fill with blood during:
Match the depolarization-repolarization phases to the correct action...
Match the description to the correct term.
The heart can't pump unless an _________________ occurs first.
Generation and transmission of electrical impulses depend on four...
Which is the correct path that impulses travel after...
During which sequence of phases is the cardiac cell said to be in its...
Match the stroke volume factors with the correct description.
Phases of the Curve: Match the depolarization-repolarization cycle...
MI is the abreviation for Mycardial Infraction which is another name...
Depolarization-repolarization Cycle: Phase 0, 1, 2, and 3 will show up...
A tract of tissue extending into the ventricles next to the...
Match the phases of the cardiac cycle with the order of which they...