What is a spectrometer? A spectrometer is an tool commonly used by astronomers which splits the light collected by a telescope into its colors. This allows astronomers see the details in the light from space. Astronomers know how to get a lot of special information about a space object by studying its light. By using spectrometers, we can find out the temperature of an object in space, learn which direction it is traveling, find out how fast it is going, figure out its weight and even find out what it is made of.
Negative inotropes weaken the heart's contractions and slow the heart rate. These medicines are used to treat high blood pressure (hypertension), chronic heart failure, abnormal heart rhythms (arrhythmias), and chest pain (angina).
046 How Adrenaline and Acetylcholine Affect Heart Rate. Leslie Samuel March 30, 2011 IBTV, Physiology, The Circulatory System 64 Comments. In this episode, Leslie discusses the effect of adrenaline and acetylcholine on heart rate.These two modifies the conductance of the ions across the membranes of the cells of the SA node causing either an increase or a decrease in heart rate.Watch and learn how it all works.46 How Adrenaline and Acetylcholine Affect Heart Rate. Leslie Samuel March 30, 2011 IBTV, Physiology, The Circulatory System 64 Comments. In this episode, Leslie discusses the effect of adrenaline and acetylcholine on heart rate.