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Results 1 - 10 of 49 for Or
  1. Malignant tumors, as seen developing on the right vocal cord, are typically caused by tobacco use.
  2. ... the pituitary is the hypothalamus. It sends hormonal or electrical signals to the pituitary. These determine which ... the hypothalamus might send a hormone called GHRH, or growth hormone releasing hormone. That would trigger the ...
  3. ... Lymph forms at the microscopic level. Small arteries, or arterioles, lead to capillaries, which in turn lead to small veins, or venules. Lymph capillaries lie close to the blood ...
  4. ... and limbs; diagnose serious conditions like placenta previa or breech birth; and check to see whether the mother will have twins or triplets. Ultrasound can be used anytime during pregnancy ...
  5. ... birthing position. Maternal illness due to hypertension, anemia, or heart disease. Like many surgical procedures, cesarean sections ... anesthesia. Usually, the mother is given an epidural or a spinal block. Both of these will numb ...
  6. ... of the respiratory system, such as the trachea, or windpipe, and bronchi, conduct air to the lungs. ... smoothly within the cavity. The process of breathing, or respiration, is divided into two distinct phases. The ...
  7. Air enters the body through the mouth or nose and quickly moves to the pharynx, or throat. From there, it passes through the larynx, or voice box, and enters the trachea. ...
  8. ... egg remains a single cell. After 30 hours or so, it divides from one cell into two. ... is Latin for mulberry. During the first 8 or 9 days after conception, the cells that will ...
  9. ... serious injury. It's also responsible for the fight or flight response that helps protect you when you feel stress or danger. Let's examine an individual neuron up close. ...
  10. ... proper protection from overexposure. But too much ultraviolet, or UV, exposure can cause sunburn. The UV rays ... layers of the skin, where they can damage or kill skin cells. People, especially those who don’ ...
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