The most striking alien veg of the bunch is the orange or cheddar cauliflower. In shape alone, it resembles any old cauliflower, but its colorâranging from creamy coral to sunburst orangeâis strikingly unique.The hue, it turns out, comes from the extra beta-carotene naturally stored in its florets (which also gives this cauliflower 25 percent more vitamin A than the more common white variety).n shape alone, it resembles any old cauliflower, but its colorâranging from creamy coral to sunburst orangeâis strikingly unique. The hue, it turns out, comes from the extra beta-carotene naturally stored in its florets (which also gives this cauliflower 25 percent more vitamin A than the more common white variety).
If tachycardia is caused by a medical illness, there will be additional symptoms that are specific to that illness. For example, people who have tachycardia caused by hyperthyroidism also can experience nervousness, insomnia, sweating, tremors and other symptoms related to high levels of thyroid hormones.
During rest, the speed of electrical signals originating from the SA node is slow, thus the heart beats slowly. During exercise or excitement, the speed of signals from the SA node increases, and heartbeat quickens. Tachycardia occurring because of rapid firing by the SA node is called sinus tachycardia. Sinus tachycardia is usually a rapid contraction of a normal heart responding to a condition or disease state. Sinus tachycardias can cause palpitations.