Answer:
The left ventricle LV pumps the oxygen-rich blood through the aortic valve AoV into the aorta Ao the main artery that takes oxygen-rich blood out to the rest of the body.
Answer:
The two hormones, LH and FSH, are responsible for production of testosterone in boys. Testosterone is the male sex hormone produced in the testes. Blood levels of testosterone in boys rise during puberty, and this surge of hormone levels is responsible for development of the male features: facial hair, pubic hair and muscle development.
Explanation:
Someone fighting fever will have a negative nitrogen level. When someone expands energy and fails to provide enough nutrients to their body to recover, negative nitrogen levels occur <span />
