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).
Placing the patient on a cardiac monitor.
Blood potassium levels should range between 3.5 and 5.0 milliEquivalents per liter (mEq/L). Potassium concentrations between 5.1 and 6.0 mEq/L are regarded as moderate hyperkalemia. Potassium concentrations between 6.1 and 7.0 mEq/L indicate mild hyperkalemia, whereas concentrations over 7 mEq/L indicate severe hyperkalemia.
If drugs are the cause of the hyperkalemia, treatment options include stopping or changing them. In an emergency, intravenous infusions of glucose and insulin can assist transfer potassium back into body cells, and sodium bicarbonate injections can also be used to encourage potassium migration into cells and lower blood levels. In extreme situations, potassium can be removed from the body via dialysis.
Here's another question with an answer similar to this about serum potassium level: brainly.com/question/28271622
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Answer:
b. Latent
Explanation:
About 1/3 of the worlds population have TB but do not show any signs or symptoms. This is because during Latency the bacilli is efficiently contained in the lungs by the immune cells such as neutrophils and macrophages.
Answer:
During the last part of the systolic phase, called ejection phase, the pressure in the left ventricle is higher than the pressure in the aorta.
Explanation:
During the ejection phase, the pressure in the left ventricle is higher than in the aorta, this enables the sigmoid valve to open. Once it opens, the blood will flow from the left ventricle into the aorta. This way, the pressure in the left ventricle will progressively decrease and the pressure in the aorta will increase until both pressures are equal and the valve closes.
