Question

discuss how the skin assists the function of the urinary, digestive, and skeletal systems to contribute to the bodys homeostasis by filling in the blanks of the following sentences: drag the text blocks below into their correct order. when keratinocyte cells are exposed to _, the ultraviolet (uv) rays assist them in producing vitamin d from a precursor _. most milk today is _ with vitamin d, which helps prevent _, which is characterized especially by soft and deformed bones. calcitriol regulates calcium uptake by the _ system and both calcium and phosphorus metabolism in cells. vitamin d leaves the skin and enters the liver and _, where it is converted to a hormone called _. only a small amount of uv _ is needed.

Explanation:

When keratinocyte cells in the skin are exposed to sunlight, UV - rays help produce vitamin D from a precursor molecule. Milk is often fortified with vitamin D to prevent rickets. Calcitriol (an active form of vitamin D) regulates calcium uptake by the digestive system and calcium - phosphorus metabolism. Vitamin D goes to the liver and kidneys and is converted to calcitriol. Only a small amount of UV exposure is needed for vitamin D synthesis.

Answer:

When keratinocyte cells are exposed to sunlight, the ultraviolet (UV) rays assist them in producing vitamin D from a precursor molecule.
Most milk today is fortified with vitamin D, which helps prevent rickets, which is characterized especially by soft and deformed bones.
Calcitriol regulates calcium uptake by the digestive system and both calcium and phosphorus metabolism in cells.
Vitamin D leaves the skin and enters the liver and kidneys, where it is converted to a hormone called calcitriol.
Only a small amount of UV exposure is needed.