GamerGirl15
22.04.2020 •
Biology
Blood pressure is generated byA. Valves in the heart B. Contractions of the heart muscle C. Veins D. Contractions of the diaphragm muscle
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Ответ:
The answer is B, contractions of the heart muscle.
Explanation:
Basically blood pressure is the pressure in which your blood is pushed away from the heart to the other parts of your body. So the force in which the heart has to use to pump that blood is the blood pressure. This is called the systolic pressure. The harder your heart has to work to pump the blood, the higher your pressure will be. There's a secondary pressure is called diastolic pressure. This is the second force where your heart rests between pumps. So you will have 2 numbers for blood pressure, the systolic and the diastolic. You want your heart to work as little as possible to pump the blood through your body.
Ответ:
White Blood cell: Fights pathogens that can cause sickness
Platelet: Helps in the healing of cuts and wounds
Plasma: Contains the liquid portion of blood