Principles of Biomedical Sciences 4.3
Key Terms Exam Questions with Latest
Update
Atrioventricular Node - ANSWER-A specialized mass of conducting cells located at the
atrioventricular junction in the heart.
Blood Pressure - ANSWER-Pressure exerted by the blood upon the walls of the blood
vessels, especially arteries, usually measured by means of a sphygmomanometer and
expressed in millimeters of mercury.
Cardiology - ANSWER-The study of the heart and its action and diseases.
Diastole - ANSWER-The stage of the heart cycle in which the heart muscle is relaxed,
allowing the chambers to fill with blood.
Diastolic Pressure - ANSWER-Blood pressure that remains between heart contractions.
Electrocardiogram (EKG) - ANSWER-A measurement of heart electrical activity.
Heart Rate - ANSWER-A measure of cardiac activity usually expressed as the number
of beats per minute.
Hypertension - ANSWER-An abnormally high blood pressure.
Pacemaker - ANSWER-An electrical device for stimulating or steadying the heartbeat or
reestablishing the rhythm of an arrested heart.
Pulse - ANSWER-The rhythmic expansion and recoil of arteries resulting from heart
contraction; can be felt from the outside of the body.
Sinoatrial Node - ANSWER-A small mass of tissue that is made up of Purkinje fibers,
ganglion cells, and nerve fibers, that is embedded in the musculature of the right atrium,
and that originates the impulses stimulating the heartbeat -- called also S-A node, sinus
node.
Sphygmomanometer - ANSWER-An instrument for measuring blood pressure and
especially arterial blood pressure.
Systole - ANSWER-The stage of the heart cycle in which the heart muscle contracts
and the chambers pump blood.
Key Terms Exam Questions with Latest
Update
Atrioventricular Node - ANSWER-A specialized mass of conducting cells located at the
atrioventricular junction in the heart.
Blood Pressure - ANSWER-Pressure exerted by the blood upon the walls of the blood
vessels, especially arteries, usually measured by means of a sphygmomanometer and
expressed in millimeters of mercury.
Cardiology - ANSWER-The study of the heart and its action and diseases.
Diastole - ANSWER-The stage of the heart cycle in which the heart muscle is relaxed,
allowing the chambers to fill with blood.
Diastolic Pressure - ANSWER-Blood pressure that remains between heart contractions.
Electrocardiogram (EKG) - ANSWER-A measurement of heart electrical activity.
Heart Rate - ANSWER-A measure of cardiac activity usually expressed as the number
of beats per minute.
Hypertension - ANSWER-An abnormally high blood pressure.
Pacemaker - ANSWER-An electrical device for stimulating or steadying the heartbeat or
reestablishing the rhythm of an arrested heart.
Pulse - ANSWER-The rhythmic expansion and recoil of arteries resulting from heart
contraction; can be felt from the outside of the body.
Sinoatrial Node - ANSWER-A small mass of tissue that is made up of Purkinje fibers,
ganglion cells, and nerve fibers, that is embedded in the musculature of the right atrium,
and that originates the impulses stimulating the heartbeat -- called also S-A node, sinus
node.
Sphygmomanometer - ANSWER-An instrument for measuring blood pressure and
especially arterial blood pressure.
Systole - ANSWER-The stage of the heart cycle in which the heart muscle contracts
and the chambers pump blood.
