Blood Pressure

Question 1

what is blood pressure?

Answer 1

the force exerted against walls of the arteries

Question 2

whats is hypertension? what would the blood pressure be for hypertension?

Answer 2

high blood pressure. 130/80mmHg or higher

Question 3

what are two components that affects blood pressure?

Answer 3

1. caridac output
2. arteriolar resistance

Question 4

what is cardiac output?

Answer 4

the volume of blood discharged from the left ventricle (into the aorta)

Question 5

what affects cardiac output?

Answer 5

-stroke volume (volume of blood ejected per beat)
-heart rate
(stroke volume x heart rate)

Question 6

what is arteriolar resistance?

Answer 6

diameter of vessel < diameter more resistance to flow there > blood pressure (IDFK)

Question 7

What affects blood pressure?

Answer 7

-exercise
-illness
-body mass
-stress

Question 8

True or False: Pateints with weak hearts will have less SV therefore greater HR

Answer 8

True

Question 9

True or False: Athletes with strong hearts will have less SV therefore greater HR

Answer 9

False. Athletes will have a greater SV therefore a lower HR

Question 10

when it comes to blood pressure, what does systolic mean?

Answer 10

contraction of ventricle sends out a wave of blood that expands vessel

Question 11

when it comes to blood pressure, what does diastolic mean?

Answer 11

pressure of blood flowing through vessel after pulse

Question 12

What device is used to measure blood pressure?

Answer 12

a Sphygmomanometer.

Question 13

What happens when your blood pressure is too low? (how does it affect)

Answer 13

reduces capacity to transport blood (oxygen)

Question 14

What happens when your blood pressure is too high? (how does it affect)

Answer 14

weaken and rupture arteries

Question 15

Where are Pressure Receptors found? (detect blood pressure)

Answer 15

walls of aorta

Question 16

What occurs when your blood pressure is too high?

Answer 16

impulse is sent to medulla. stimulates parasympathetic nerves. arteries dilate increasing blood flow and decrease in heart rate and stroke volume

Question 17

What occurs when your blood pressure is too low?

Answer 17

impulse is sent to medulla. sympathetic nerves are stimulated. increasing cardiac output and arterioles to constrict raising blood pressure

Question 18

how does stress affect blood pressure?

Answer 18

sympathetic nerves stimulate to release of epinephrine.

Question 19

What does epinephrine do to the heart rate?

Answer 19

increases heart rate and breathing rate. causes release of rbs from spleen. blood increase to internal organs (head, muscle, heart), decrease to others (stomach, intestine)