Answer:
True
Explanation:
Pacemaker cells, unlike other neurons in the body, can depolarized themselves (and therefore can fire action potentials) without the need of an external innervation of the autonomic nervous system.
Each class of pacemaker cells has its own intrinsic rate.
For example, sinoatrial node rate is 60-100 bpm (the normal heart frequency).
The atrioventricular node is also part of the electrical conduction system of the heart. When the sinoatrial node fails, atrioventricular node takes the lead (40-60 bpm).
Answer:
They allowed to refuse only if they understand their medical situation and the risks and benefits they are assuming.
Hope it helps!!
Answer:
Being over weight, particularly being obese, increases the amount of cholesterol in your bile, which increases your risk of developing gallstones. You should control your weight by eating a healthy diet and taking plenty of regular exercise. But you should avoid low-calorie, rapid weight loss diet.
