PLEASE HELP ME How could the body attempt to lower blood pressure?
- Remove water from the blood and constrict the blood vessels
- Add water to the blood and constrict the blood vessels
- Remove water from the blood and dilate the blood vessels
- Add water to the blood and dilate the blood vessels

Which of the following produces the first heart sound?
- The closing of the valves between the ventricles and the body
- The opening of the valves between the atria and the ventricles
- The closing of the valves between the atria and ventricles
- The opening of the valves between the ventricles and the body

A doctor detects an irregularity in the first part of the heartbeat. Where would the abnormality occur that would cause this irregularity?
- Valve between the left atrium and left ventricle
- Valve between the left atrium and the body
- Valve between the left ventricle and left atrium
- Valve between the left ventricle and the body

How could a hormone produce hypertension in the body?
- Constrict the blood vessels and inhibit the kidneys from removing water from the blood
- Dilate the blood vessels and inhibit the kidneys from removing water from the blood
- Constrict the blood vessels and stimulate the kidneys to remove water from the blood
- Dilate the blood vessels and stimulate the kidneys to remove water from the blood

Blood vessel plaques can...
- increase blood pressure by reducing the flexibility of blood vessels
- increase blood pressure by reducing the water content of the blood
- reduce blood pressure by increasing blood volume
- reduce blood pressure by increasing heart rate