I would say at least 18 years old , as soon as you graduate from HS enroll into classes
Answer : B-depressed
Explanation:
The respiratory centers in the brain is located in the brainstem. When the blood PH changes, some receptors in the brain called chemoreceptors are sensitized and activates the respiratory centers to adjust the rate of respiration in a bit to change the PH back to normal. This can be by increasing or decreasing ventilation rate.
In the case of increased blood PH which signifies a decrease in the level of Co2, The respiratory control centers are depressed to decelerate ventilation rate in a bid to increase the level of carbon dioxide levels and PH to normal levels. .
Vitamin B12 is a water-soluble vitamin that cannot be absorbed by the intestinal mucosa unless it has been bound to intrinsic factor.
Intrinsic factor is a glycoprotein secreted by the stomach that is essential for the absorption of vitamin B12. Vitamin B12 is essential for the synthesis of DNA and for the maintenance of normal red blood cells.
Vitamin B12 is an important nutrient that helps keep the body's nerve and blood cells healthy. It also helps make DNA, the genetic material in all cells. Vitamin B12 is found in animal foods such as meat, poultry, fish, and dairy products.
The body needs vitamin B12 to make red blood cells, which carry oxygen throughout the body. Vitamin B12 is also needed for proper brain function and to prevent a type of anemia called megaloblastic anemia, which makes people tired and weak.
Learn more about anemia at : brainly.com/question/29355130
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Answer:
The major functions of the skeletal system are body support, facilitation of movement, protection of internal organs, storage of minerals and fat, and blood cell formation.