How respiratory and cardiovascular systems work together to maintain homeostasis of the blood ?

Explain how Cardiovascular physiology ?

Where does hypoxia occur? What does blood protect us from?

Describe how the cardiovascular system achieves homeostasis when an individual goes from a supine position to a standing position. (Tip: Use key concepts like stimulus, control center, effectors and responses to achieve homeostasis)      How does the the respiratory system respond and achieve homeostasis in an individual who is hyperventilating?  (Tip: Use key concepts like stimulus, control center, effectors and responses to achieve homeostasis)