1. The cells of the SA node at the top of the heart are known as the pacemaker of the heart because the rate at which these cells send out electrical signals determines the rate at which the entire heart beats (heart rate).
2. septum : The septum is a thick wall of muscle that divides the heart. It separates the left and right sides of the heart.
3.The respiratory and circulatory systems work together to maintain homeostasis. The respiratory system moves gases into and out of the blood. The circulatory system moves blood to all parts of the body.
hope this helps! sorry I couldn't do all of them!
Answer:
True. It is there job. When people sign up for a commitment or a job, it is their responsibility to follow through with that and do their job. It's just common sense. :)
1) feelings of euphonia
2) pain relief
3) drowsiness
4) sedation
these are 4 side effects of opiates
Answer:
Taking in oxygen & expelling carbon dioxide and working with the circulatory system.
Explanation:
The lungs work with the circulatory system to pump blood cells with oxygen to all cells in the body, the blood then collects waste and carbon dioxide and brings them back to the lungs where they're taken out of the body when we exhale.
