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Chapter 14 and 15 The heart/Circulation of the blood
Terms in this set (90)
The heart has its own special covering, a loose fitting in extensible sac called
The bulk of the heart wall is thick, contractile middle layer called
The type of tissue that lines the heart and blood vessels is the
Blood leaving the left atrium passes next through the
Blood leaving the right atrium passes next through the
The order which an impulse passes through the conduction system of the heart is
SA node, AV node, AV bundle, and Purkinje fibers
discharging chambers, they have thicker walls than the atria
Heart begins with
The chordate tendineae are attached to the
What structure contains oxygen rich blood
blood flows to the heart muscle by way of the right and left coronary arteries, the coronary arteries are the first branch of the aorta
Another term for "hardening of the arteries" is
The pacemaker for the conduction system of the heart is the
the ECG deflection that represents the depolarization of the ventricles is the
The ECG defection that represents the depolarization of the atria is the
The ECG deflection that represents the repolarization of the ventricles is the
Repolarization of the atria
is very small is hidden by the large QRS complex that occurs at the same time
Cardiac output is determined by the
heart rate and stroke volume
What tends to decrease heart rate
the neurotransmitter acetyleholine
What are the upper two chambers of the heart?
atrium or atria
What are the lower two chambers?
The system that supplies our cells' transportation needs is the
The ? or blunt point at the lower edge of the heart lies on the diaphragm, pointing to the left
what divides the heart into right and left sides between the atria
Inflammation of the heart lining is
What are the two AV valves?
bicuspid or mitral valve and tricuspid valve
What is the inner layer of the pericardium?
visceral pericardium or epicardium
What is the outer layer of the pericardium?
If the pericardium becomes inflamed, a condition called
What is located between the two ventricular chambers and the large arteries that carry blood away from the heart when contraction occurs?
SL valves or semilunar valves
What is the condition caused when the flaps of this valve extend back into the left atrium, causing the valve to leak
mitral valve prolapse
Cardiac damage resulting from a delayed inflammatory response to a streptococcal infection that occurs most often in children?
Rheumatic heart disease
movement of blood from the left ventricle through the body
abnormal heart sound often caused by disorders of the valves
movement of blood from the right ventricle to the lungs
severe chest pain
high blood pressure
structures through which blood returns to the left atrium
treatment for certain coronary disorders
The heart beats at an average rate of ? bmp
each complete beat of the heart is called
a cardiac cycle
the pace maker of the heart is also known as the
a rapid heart rhythm, over 100 beats per minutes, is referred to as
describes the electrical activity that triggers contraction of the heart muscle
a diagnostic tool that uses ultrasound to detect valve and heart disorders is known as an
frequent premature contractions can lead to
a drug that slows and increases the strength of cardiac contractions is
congestive heart failure inevitably causes
failure of the right side of the heart due to blockage of pulmonary blood flow is called
a non medical rescuer can defilbrillate a victim in ventricular fibrillation with the use of an
coumadin and dicumarol are examples of commonly used oral
the superior vena cava carriers blood to the
what precedes ventricular contraction
P wave, atrial depolarization, and ventricular depolarization
may be caused by infection or trauma, often causes severe chest pain, and may result in impairment of the pumping action of the heart
outside covering that surrounds and protects the heart
thin-walled upper heart cavities that receive blood from veins are called
a valve that permits blood to flow from the right ventricle into the pulmonary artery is called
ventricle contraction of the heart occurs immediately after depolarization of the
a variation in heart rate during breathing cycle is called
allow patients to move around freely without external pumps, are artificial hearts that are made up of biologically inert synthetic materials, still have limited use
carry blood away from the heart
carry blood to the heart, have one way valves that prevent back flow of blood
function as exchange vessels
outermost layer of arteries and veins
smooth muscle cells that guard the entrance to capillaries
superior vena cava
carries blood out of the left ventricle
decreased blood supply to a tissue
necrosis that has progressed to decay
a type of arteriosclerosis caused by lipids
a section of an artery that has become abnormally widened
varicose veins in the rectum
cerebral vascular accident
Each chamber of the heart is lined by a thin layer of smooth tissue known as the
Which of the following is the atrioventricular valve that is located on the left side of the heart?
what is on the left side of the heart?
what wave occurs with depolarization of the atria
An immediate life-threatening arrhythmia, in which a lack of ventricular pumping stops the flow of blood to vital organs, is:
a general term for a disease of the myocardium is
a calcium channel-blocker?
the ductus venosus is part of?
what influences blood pressure
blood volume, strength of heart contractions, and heart rate
what happens when blood volume is loss?
device used to measure blood pressure?