<span>A. Stimulus is the term used to describe what causes organisms to react to their environment. Stimulus is something that can provoke organisms to respond to the world around them. For example, if you put your hand on the stove, the stove is going to be the stimulus for you to get burned and move your hand from it because it will be to hot - that is going to be your reaction to the stimulus. Camouflage is a type of hiding mechanism, parasites are organisms, and homeostasis is equilibrium in an organism. </span>
C. Pepsin is the hormone that is produced mainly in the stomach and regulates secretions of gastric juice.
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a. Cassegrain focus</span> is the focal arrangement in a Cassegrain reflector used in optical telescopes and radio antennas. The primary mirror is a concave mirror, and the secondary mirror that reflects the focused light back to it is a convex mirror.
The ventricles can cause ventricular tachycardia, a rapid dysrhythmia with heart rates of 100 to 250 per minute.
<h3>What is ventricular heartbeat?</h3>
Extra heartbeats known as premature ventricular spasms (PVCs) start within one of the brain's two lower pump chambers (ventricles). The normal pulse rhythm is disrupted by these extra beats, which can occasionally make the chest feel as though it is fluttering or skipping beats.
<h3>What is a normal ventricular?</h3>
The heart's left ventricle serves as its primary pumping chamber. It forces air blood up into the aorta, the main artery in your body, to supply the rest of your body. Based on the American Heart Association, a typical ejection fraction ranges from 50% to 75%. An ejection fraction that is on the edge can be from 41% and 50%.
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