dugang saheart Flashcards
What overlies the heart
precordium
weigh of heart in men
310g
weigh of heart in women
255 g
occurs when blood flows to tissues and organs, promoting oxygen and carbon dioxide diffusion.
Perfusion
return oxygenated blood to the left atrium.
pulmonary veins
transports oxygenated
blood from the left ventricle to the body.
aorta
The SA node generates electrical
impulses with inherent rhythmicity at a
rate of
of 60-100 per minute.
primary “pacemaker” of the heart,
SA node
Reflects ventricular depolarization (and atrial repolarization), leading to ventricular contraction;
QRS complex:
Signifies ventricular
repolarization, indicating the return of
the ventricles to a resting state.
T wave:
Marks the period between
ventricular depolarization and the onset of ventricular repolarization.
ST segment:
Represents the total time
for ventricular depolarization and repolarization, from the beginning of the Q wave to the end of the T wave; its duration varies with heart rate.
QT interval:
is a method used to measure and record
this electrical activity.
Electrocardiography (ECG or EKG)
found in the neck, is a key pulse point because it’s
close to the heart. Its pulsation matches
closely with the heartbeat’s rhythm.
carotid artery pulse,
ones are deeper and
closer to the midline of the neck, running next to the sternocleidomastoid muscle.
Internal jugular vein
