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Explain one of the reasons why a person changing quickly from a horizontal to vertical position temporarily may feel dizzy?
The reason has to do with how blood flows through the body, and blood pressure. When lying down, blood pressure to the brain is fairly low, since there is less pressure required to pump blood to the brain in a horizontal body - it's not fighting gravity as the entire body is on the same level plane.
However, when a person stands up too quickly, the body doesn't have enough time to react to the rapid increase in gravity that short distance causes, and therefore doesn't have enough time to increase blood pressure flow to the brain. So the reason a person can feel dizzy is that when they stand up, there isn't enough blood flow to the brain yet - it takes a couple of seconds for the heart to catch up. It can also happen even if a person is just stiting down and stands up.
What else can I help you with?
Which way is vertical up or down?
Vertical means up and down. A horizontal line goes from the left to the right (or from the right to the left) like this: ----------------------------- A horizontal line goes from a position that is low to a position that is high (or from a position that is high to a position that is low) like this: | | | | | | | | But the word "vertical" does not tell you which direction the line is drawn, just the it is a line.
What term means changing the vertical or horizontal size of a graphic by a percentage?
ZOOM - The feature in image and document viewers and editors.
What is the horizontal and vertical lines in a coordinate system?
Horizontal is X-Axis and Vertical is Y-Axis.
What is an antonym for vertical?
An antonym for the word 'vertical' is 'horizontal'
Is X equals 0 horizontal or vertical?
Vertical.
How are vertical and horizontal definrd?
Vertical is defined as the direction or position that is perpendicular to the plane. Horizontal is defined as to be parallel to the horizon.
What two things change when an objects in motion?
horizontal and vertical position
Which way is vertical up or down?
Vertical means up and down. A horizontal line goes from the left to the right (or from the right to the left) like this: ----------------------------- A horizontal line goes from a position that is low to a position that is high (or from a position that is high to a position that is low) like this: | | | | | | | | But the word "vertical" does not tell you which direction the line is drawn, just the it is a line.
Why are high capacity pumps usually in a vertical position rather than a horizontal position?
This is not always true. High velocity pumps can be found in horizontal configurations too. It all depends on the application (sometimes the manufacturer) whether it will be a horizontal of vertical pump.
In the 5G position for welding pipe the pipe must?
The pipe must be fixed (not rolled) in the horizontal position. With the pipe horizontal, the weld is vertical. The pipe being fixed requires the welder to weld flat (top), vertical (sides), and overhead (bottom). The pipe must be fixed (not rolled) in the horizontal position. With the pipe horizontal, the weld is vertical. The pipe being fixed requires the welder to weld flat (top), vertical (sides), and overhead (bottom).
How is position defined in two directions?
Position is defined using two coordinates: x for horizontal position and y for vertical position. The x-coordinate determines the position along the horizontal axis, while the y-coordinate determines the position along the vertical axis. Together, these coordinates pinpoint a specific location in two dimensions.
What is the name of horizontal and the vertical lines drawn to determine the position of any point in the Cartesian planeM?
Very simply (and unimaginatively), the horizontal axis or x axis and the vertical or y axis.
What is vertical and what is horizontal?
Vertical is up and horizontal is across
If you wanted to make a line graph to graph the motion of an object what would you put what on the horizontal axis and what would you put on the vertical axis?
You put time on the horizontal axis and distance on the vertical axis.
What is the trajectory of the projectile?
An "ideal" projectile trajectory ... without the influence of wind or air resistance ... is a section of a parabola. That's the figure you get when the horizontal position changes at constant speed and the vertical position changes at a speed that is itself changing at a constant rate.
Is the san Andreas fault horizontal or vertical?
Vertical and horizontal
Which position is responsible for both horizontal and vertical separation between aircraft?
B. Radar controller
