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). The cells that create these rhythmic impulses, setting the pace for blood pumping, are called pacemaker cells, and they directly control the heart rate. They make up the cardiac pacemaker, that is, the natural pacemaker of the heart. Hope this helps!
Answer:
D) to break down oxygen entering the respiratory system
Explanation:
Because the function of mucus in the nasal cavity is warm, moisturize and filter air entering
The next step is to remember the last number of the last sound and then the emt should indicate or write the systolic and diastolic which will indicate the blood pressure of the person that is being taken. After noting the blood pressure, it is already advisable to remove the stethoscope and the cuff from the arm of the person that has been taken blood pressure.
Calcium helps to maintain the strength of your bones and teeth, keeping them from becoming weak and brittle. Many dairy products contain a fair amount of calcium in them, including milk and cheese. Many vegetables also contain calcium without the high fat content, such as broccoli and kale.
Hope this helps!
