What are stem cells? How are they special?
What will be an ideal response?
Stem cells are cells that can develop into different types of body cells; theoretically, they can repair the body. As a stem cell divides, the new cells can remain stem cells or become another kind of cell. It is possible that stem cell research may lead to regenerative or rehabilitative medicine.
Stem cells are special in a number of ways. First, they are unspecialized cells that renew themselves for long periods through cell division. Second, under certain physiologic or experimental conditions, they can be induced to become cells with special functions, such as the beating cells of the heart muscle or the insulin-producing cells of the pancreas.
Many scientists feel that stem cell research may hold the possibility of future cures, preventions, and therapies. In November 2006, scientists succeeded in growing heart valves "using stem cells from the fluid that cushions babies in the womb." These valves might one day be used for babies born with heart defects. In the past, scientists have either had to use embryonic stem cells or generate embryonic-like stem cells—a difficult process. In 2011, however, scientists at the Scripps Research Institute succeeded in "convert[ing] adult skin cells directly into beating heart cells." This technology might make possible new treatments for heart disease, Parkinson's disease, and Alzheimer's disease.
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An automated cell counter consistently produces red blood cell readings that are 20% too low. What type of error is this considered?
A) Absolute B) Random C) Systematic D) Variable
It is best if the medical office manager takes the time to
A. relieve the receptionist for a lunch break. B. say hello to each patient as they arrive in the office. C. read the patient registration form to the patient. D. sit with patients when talking to them.
The lateral pterygoid is a jaw muscle that
a. arises from the sphenoid and the pterygoid plate of the sphenoid and inserts on the mandibular condyle and joint capsule and disk of the TMJ. b. arises on the pterygoid plate of the sphenoid and the maxilla and inserts across the inner surface of the mandibular ramus. c. arises from the zygomatic arch and the coronoid process and inserts across the angle of the mandible. d. arises from the zygomatic arch and the coronoid process and inserts on the mandibular condyle and the joint capsule and disk of the TMJ.
Nasopalatine artery is a branch of the __________________________ section.
Fill in the blank(s) with the appropriate word(s).