Examlex
Where is the Trapezium found?
Atrial Depolarization
The electrical activation of atrial myocardium (heart muscle) that leads to the contraction of the atria, marked as the P wave on an electrocardiogram (ECG).
Electrocardiogram
A diagnostic test that measures the electrical activity of the heart to identify various heart conditions.
Semilunar Valves
Valves located at the exits of the heart, preventing blood from flowing back into the ventricles from the arteries.
Diastole
The phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.
Q4: _ galaxies have star formation, but no
Q8: One of the first tests of the
Q16: Th e apparen t magnitud e o
Q17: The collapse of the iron core of
Q22: Helioseismology maps of rotation in the Sun's
Q32: Which telescope will be launched into solar
Q35: The _ of the Moon's orbit is
Q43: Ancient astronomers often had difficulty explaining _,
Q62: During the first reaction of the proton-proton
Q62: When Tycho saw no parallax in the