Most blood cells are produced in red bone marrow by cells called ________.
Fill in the blank(s) with the appropriate word(s).
hemocytoblasts
Most blood cells are produced in red bone marrow by cells called hemocytoblasts.
You might also like to view...
What is ampere
What will be an ideal response?
A 27-year-old male has been involved in a motor vehicle collision and is entrapped in his car. He is unresponsive with agonal gurgling respirations and blood coming from his nose. His respirations show poor effort and are inadequate. The radial pulse is rapid and weak and skin cool and diaphoretic. An Emergency Medical Responder is holding manual in-line spinal stabilization. What action would
you perform first? A) Mechanical extrication from the vehicle B) Application of a cervical collar C) Control a nasal hemorrhage D) Suction the airway with a hard-tip catheter
After several cycles of lab testing on test animals, a medication can enter clinical trials for evaluation in humans. In phase II clinical trial testing:
A) the trial is expanded to include a large sample size, usually in the thousands of individuals, and establish the overall safety and effectiveness of the drug. B) the medication is compared to other medications on the market. C) consists of the drug being tested on a small number (usually 300 or less) of people with the illness or condition the drug is designed to treat. D) researchers attempt to determine the safe dose and how the medication is both absorbed and eliminated from the body.
Answer the following statement(s) true (T) or false (F)
1. Soft tissue absorbs more radiation and produces more scatter than bone. 2. Penumbra is a geometric unsharpness around the periphery of an image. 3. Automatic collimators are known as positive beam limitation (PBL) devices. 4. PBLs may also filter the x-ray beam. 5. Lead masks may serve as beam restrictors.