Answer:
The heart is a muscle and therefore it can be stimulated by electrical impulses.
Explanation:
In the heart, the electrical activity is generated in the SA node and conducted from the right atrium to the left atrium in order to contract myocardial cells
Answer:
during pericardiocentesis ,a doctor insert a needle through the chest wall and into the tissues around the heart .one the needle is inside the percardium ,the doctor insert a long ,thin tube called catheter the doctor uses the catheter to drain excess fluid the catheter may comes right out after the procedure <u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>(</u><u>mark </u><u>me</u><u> </u><u>as</u><u> </u><u>an</u><u> </u><u>bra</u><u>inliest</u><u>)</u>
Answer: The dependent variable is weight; the independent variable is exercise.
Explanation:
The dependent variable refers to the variable which depends on the independent variables which are the other factors that are measured.
The dependent variable is expected to change due to the manipulation of the independent variables. Since the researcher is investigating the effects of exercise on weight, the dependent variable is weight while the independent variable is exercise.