Tag: human body and organ system

Blood pressure is the pressure exerted by the flowing blood on the elastic walls of arteries. Blood pressure is measured in two stages- systolic and diastolic. The instrument by which we can measure blood pressure is called sphygmomanometer. In humans, the blood pressure is measured in the brachial artery.

Blood pressure is the pressure applied on the arteries and veins during the circulation. The instrument used is called a sphygmomanometer and two variables are measured as follows
1. Systolic pressure, which occurs during heart muscle contraction which forces blood into arteries, averages around 120mmHg and is expressed in millimeters of mercury (mm Hg).
2. Diastolic pressure, which occurs during relaxation of the heart muscle, averages around 80 mm Hg.

Hypertension is the term for blood pressure that is higher than normal (120/80). In this measurement, 120 mm Hg (millimeters of mercury pressure) is the systolic, or pumping pressure and 80 mm Hg is the diastolic, or resting, pressure.

Normal resting blood pressure or arterial blood pressure for an adult human being is about 120/80 mm Hg. Blood pressure is summarized by two measurements, systolic and diastolic, which depend on whether the heart muscle is contracting (systole) or relaxed between beats (diastole).

A healthy blood pressure reading should be lower than 120/80 mm Hg. Normal blood pressure is less than 120 mm Hg systolic and 80 mm Hg diastolic, and may vary from 90/60mm Hg to 120/80mm Hg in a healthy young woman. A blood pressure of 140/90 mmHg or higher indicates high blood pressure.

Blood pressure is regulated by the amount of water and salts. It is regulated by hormones secreted by the adrenal gland. Aldosterone regulates a number of salts and water in the blood. The fluctuation in the blood pressure is measured by Sphygmomanometer. It was invented by Samuel Siegfried Karl Ritter von Basch in 1881. Hence, the correct answer is option A.

Systole is the period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle (the sequence of events in a single heart beat). Systole causes the ejection of blood into the aorta and pulmonary trunk.

The blood flows under great pressure in the arteries and veins. Blood pressure may be defined as the pressure exerted by the blood on the arteries and veins. It is measured by sphygmomanometer.

Blood pressure is the pressure applied on the wall of the arteries and veins. The systolic phase applies greater pressure than the diastolic phase. Normal blood pressure of human being must be 120/80mmHg.

The diastolic blood pressure measures the pressure in the arteries between heartbeats (when the heart muscle is resting between beats and refilling with blood). A normal diastolic blood pressure is 80mm of Hg.