Answer: 
- Lead, cobalt, arsenic and selenium appear to pass the placental barrier by a diffusion mechanism. It was also found that the mercury levels in cord blood were almost double those of the mother, suggesting that the foetus may act as a filter for the maternal mercury levels during pregnancy.
Explanation:
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Answer:
Hair
The losing of hair quickly and in clumps occurs with radiation exposure at 200 rems or higher.
Brain
Since brain cells do not reproduce, they won't be damaged directly unless the exposure is 5,000 rems or greater. Like the heart, radiation kills nerve cells and small blood vessels, and can cause seizures and immediate death.
Thyroid
Certain body parts are more affected by exposure to different types of radiation sources than others. The thyroid gland is susceptible to radioactive iodine. In sufficient amounts, radioactive iodine can destroy all or part of the thyroid. Taking potassium iodide can reduce the effects of exposure.
Blood System
When a person is exposed to around 100 rems, the blood's lymphocyte cell count will be reduced, leaving the victim more susceptible to infection. This is often referred to as mild radiation sickness. Early symptoms of radiation sickness mimic those of flu and may go unnoticed unless a blood count is done.According to data from Hiroshima and Nagasaki, symptoms may persist for up to 10 years and may also have an increased long-term risk for leukemia and lymphoma. For more information, visit Radiation Effects Research Foundation.
Reproductive Tract
Because reproductive tract cells divide rapidly, these areas of the body can be damaged at rem levels as low as 200. Long-term, some radiation sickness victims will become sterile.
Answer:
Toward the brain
Explanation:
Motor neurons carry signals from the brain and spinal cord to muscles.
Answer:
Secure the child in the car seat using towels and tape to immobilize her head and chest.
Explanation:
Emergency medical technician (EMT) is used for the health care providers in case of the emergency medical services. They respond quickly and provide medical facilities at the emergency situation.
During the accident the child gets injured badly. She has bleeding and abrasion. The individual can provide medical facilities and first aid to the child. The child should be keep safe and the clean clothes or towels can be used to keep her head straight.
Thus, the correct answer is option (D).
