He may receive healthcare services from any doctor allowed to bill Medicare, as long as he shows the doctor the plan's identification card and the doctor agrees to except the PFFS plan's payment terms and conditions, which could include balance billing
When the skin is exposed to ultraviolet rays, the skin produces a molecule that is turned into Vitamin D.
Sun is the source of ultraviolet rays important for Vitamin D production. Due to this reason, in the case of Vitamin D deficiency, it is recommended by doctor's to absorb sunlight by skin. The Vitamin D production occurs specifically by UV B rays rays which lie in the range of 290-315 nanometer.
The chemical 7-dehydrocholesterol absorbs these rays and convert to previtamin D3. Further, previtamin D3 isomerizes to Vitamin D. Other than sunlight, Vitamin D can be taken through diet. The sources include seafood like fish, fish oil, dairy products, beef liver etc. Vitamin D is required for bone and teeth formation, muscle contraction, immune system etc.
Learn more about Vitamin D -
brainly.com/question/4551554
#SPJ4
Cerebral palsy-<span>Symptoms include exaggerated reflexes, floppy or rigid limbs, and involuntary motions.
alzheimer's disease- </span><span>A progressive disease that destroys memory and other important mental functions.
parkinson's disease- </span><span>Parkinson's often starts with a tremor in one hand. Other symptoms are slow movement, stiffness, and loss of balance.
THE ANSWER IS B (:</span>
