Question

review of the function of the cardiovascular and respiratory symptoms:
for each question, fill in the blank using the terms provided.
word bank: alveoli, capillaries, carbon dioxide, increase, oxygen

1. the main function of the respiratory system is to bring in ____________ and remove ____________ from the body.
2. the cardiovascular system transports/moves oxygen through the ______________ to body cells.
3. when oxygen levels in the blood drop, the brain signals the heart to ______________ its rate to maintain homeostasis.
4. tiny air sacs in the lungs where gas exchange occurs are called ______________.

analysis questions

1. how did angelicas respiratory infection disrupt her bodys ability to maintain homeostasis, particularly with oxygen levels in her blood?
2. what role would the heart and cardiovascular system play in responding to the drop in oxygen caused by her lung infection?
3. how do the respiratory and cardiovascular systems work together to maintain stable oxygen and carbon dioxide levels in the body?

Explanation:

• Question 7: The respiratory system's main function is gas exchange. It takes in oxygen ($O_2$) which is needed for cellular respiration and removes carbon dioxide ($CO_2$), a waste product of cellular respiration.
• Question 8: Capillaries are the smallest blood vessels. They have thin walls that allow for easy diffusion of oxygen from the blood (in the capillaries) to the body cells.
• Question 9: When oxygen levels drop, the body needs to increase the rate at which oxygen - rich blood is delivered to cells. The heart rate (the rate at which the heart beats) is increased to pump more blood (and thus more oxygen) per unit time.
• Question 10: Alveoli are tiny air - sacs in the lungs. They have a large surface area and thin walls (one - cell thick), which are ideal for the exchange of oxygen and carbon dioxide between the air in the lungs and the blood in the capillaries surrounding the alveoli.

Answer:

1. oxygen; carbon dioxide
2. capillaries
3. increase
4. alveoli