This Russian physiologist's major published work was "Conditioned Reflexes" in 1926
His first law of planetary motion states the planets' orbits are ellipses with the sun at one focus
Water is fluoridated to help prevent these body parts from decaying
Myocarditis is the inflammation of this muscle
North American types of this bird include Montezuma, mountain & bobwhite
Its symbol K comes from kalium, a Latinized version of the Arabic word for alkali
It's the type of energy a body possesses by virtue of its movement
This basic state of matter has no fixed volume or fixed shape
In a rainbow this color appears between blue & violet
In 1928 physicist Walther Muller helped this man improve his radiation detector