Answer:
Explanation:
When the body senses foreign substances (called antigens), the immune system works to recognize the antigens and get rid of them. B lymphocytes are triggered to make antibodies (also called immunoglobulins). These proteins lock onto specific antigens.
Answer:Ghrelin
Explanation:it is a hormone produced in the stomach and other parts of the gastrointestinal tract that encourage the intake of food
Explanation
Sleep can alter your sports performance because of how it affects the body during exercise. Therefore sleep can help your body in many things such as learning and exrisices.
They are found in the Thoracic cavity 34
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