5 Written questions
5 Matching questions
- End-systolic volume
- Stroke volume (SV)
- Transverse (T) tubules
- Right ventricle
- a Tubelike invagination of the sarcolemma that conducts action potentials toward the center of the cylindrical muscle fibers.
- b because cells of the SA node spontaneously generate action potentials at a greater frequency than other cardiac muscle cells, these cells are called ...... of the heart.
- c opens into the pulmonary trunk.
- d The volume is decreased to 50-60 mL.
- e is the volume of blood pumped during each heartbeat (cardiac cycle), and it is equal to end-diastolic volume minus end-systolic volume.
5 Multiple choice questions
- is a higher-pitched sound often described as "dubb".
- is a larger branch of the right coronary artery, and other branches supply blood to the lateral wall of the right ventricle.
- is an instrument, placed beneath the skin, equipped with an electrode that extends to the heart and provides an electrical stimulus at a set frequency.
- is an artery that exits the heart, carries blood from the left ventricle to the body
- results when a prolonged lack of blood flow to a part of the cardiac muscle leads to a lack of oxygen and ultimately cellular death.
5 True/False questions
Coronary arteries → is an artery that exits the heart, carries blood from the right ventricle to the lungs.
Pericardial fluid → helps reduce friction as the heart moves within the pericardial sac.
Endocardium → The thick middle layer of the heart, is composed of cardiac muscle cells and is responsible for the heart's ability to contract.
Great Cardiac Vein → the major vein draining the tissue on the left side of the heart.
Heart-lung machine → is the number of times the heart beats (contracts) per minute.