modified cardiac muscle fibers in the subendothelial tissue, concerned with conducting impulses through the heart.
test that provides a comprehensive picture of the levels in the blood of cholesterol and triglycerides and their lipoprotein carriers (HDL, LDL, VLDL)
how does the heart contract
by the conduction system of the heart, the SA node initiates the electrical impulse that begins each heartbeat, the electrical impulse then travels through the AV node, through the bundle of HIS and into the right and left bundle branches that end in a network of nerves called the Purkinje fibers
a nuclear medicine test that evaluates how well the ventricular wall of the heart moves when it contracts
procedure to map the heart's conduction system in a patient with an arrhythmia
What is a cardiothoracic surgeon?
it is a person that does surgical procedures pertaining to the heart and thoracic cavity
to end a contraction of the heart, positive potassium ions diffuse out of the cell, while molecular pumps move positive sodium and some calcium ions out of the cell and move the rest of the calcium ions into storage within the cell
When and why would digitalis be used?
to treat congestive heart failure because it decreases the heart rate and strengthens the heart's contractions
When and why would thrombolytic be used?
to treat a blood clot that is blocking blood flow through an artery because thrombolytic drugs lyse (breaks apart) a clot
When and why would aspirin be used?
to prevent heart attacks because it prevents blood clots from forming by keeping platelets from sticking together
to begin a contraction of the heart, an impulse from the SA node changes the permeability of the myocardial cell membrane.
between the right atrium and right ventricle, opens when the right atrium contracts to allow blood flow into the right ventricle then closes to prevent blood from flowing back into the right atrium
between the right ventricle and the pulmonary trunk, opens when the right ventricle contracts to allow blood flow into the pulmonary trunk and pulmonary arteries then closes to prevent blood from flowing back into the right ventricle
mitral (bicuspid) valve-
between the left atrium and left ventricle, opens when the left atrium contracts to allow blood flow into the left ventricle then closes to prevent blood from flowing back into the left atrium
between the left ventricle and the aorta, opens when the left ventricle contracts to allow blood flow into the aorta then closes to prevent blood from flowing back into the left ventricle
instrument used to measure the pressure of the pulse by using a thin inflatable cuff
symptoms of angina pectoris
pain can be crushing, squeezing, heaviness, or pressure-like sensation in the chest, with pain extending up into the jaw, teeth, neck, or down the left arm, often with extreme sweating(diaphoresis) and a sense of doom
Patients diagnosed with HTN may be prescribed an antihypertensive drug to combat the more than normal pressure.
The first arteries that branch off the aorta and bring oxygenated blood to the heart muscle are the ________ arteries.
In coronary artery bypass grafting, a part of the ______ vein is harvested from the leg and sutured in to bypass the blockage in the coronary artery.
If an EKG tracing shows bigeminy, there was a repeating pattern of ______.
a normal contraction then a premature contraction
A healthcare professional will inform the patient who is scheduled to have a TEE that the catheter will be inserted into his/her ___________.
The myocardium is thickest in the ________ ventricle because it must work the hardest to pump blood to the entire body.
A paramedic notifies the hospital that the ambulance is bringing in a patient with a suspected AMI. This means the patient may have had a heart _________.
A/An ___________ is a physician who specializes in diagnosing and treating diseases of the heart.
What is an uncomfortable sensation felt in the chest during a premature contraction of the heart?
Which word parts do you need to build a medical word that means inflammation of a vein?
-itis which means inflammation of and phleb/o- which means vein
In the pelvic cavity, the abdominal aorta ends as it splits in two (bifurcation) to form the right and left ______ arteries.
Which nuclear medicine procedure is also known as a radionuclide ventriculography (RNV) or gated blood pool scan?
single-photon emission computed tomography (SPECT) scan
What is a chronic condition in which an enlarged heart cannot pump sufficient amounts of oxygenated blood to the body?
congestive heart failure
Structures that help regulate the blood flow between the artia and the ventricles are called the heart ________.
The part of the pericardium that is next to the wall of a cavity is the ________ pericardium.
The thoracic cavity contains the lungs and the ________, an irregularly shaped, central area between the lungs.
A patient with left-sided heart failure would most likely be treated with two types of drugs: a diuretic drug to remove edema from the tissues and a/an ________ drug to strengthen heart contractions.