BLOOD PRESSURE

Question 1

Blood pressure

Answer 1

declines as blood progresses through the vascular system from arteries to veins;

Arteries > Arterioles > Capillaries > Venules > Veins

Question 2

Blood pressure

Answer 2

the force blood exerts against the inner walls of blood vessels;

most commonly refers to pressure in arteries supplied by the branches of the aorta.

measured in the brachial artery.

Question 3

Arterial Blood Pressure

Answer 3

increases and decreases in a pattern corresponding to the phases of the cardiac cycle

Question 4

Right ventricle

Answer 4

• into the pulmonary trunk

Question 5

Left ventricle

Answer 5

• into the aorta

Question 6

Maximum pressure in the arteries

Answer 6

systolic pressure (increase)

Question 7

ventricles relax (ventricular diastole)

Answer 7

arterial pressure decreases; lowest pressure that remains in arteries before the next ventricular contraction

diastolic pressure (decrease).

Question 8

Cardiac Output

Answer 8

= HR (heart rate) * SV (stroke volume)

Homeostasis – 120/80

Question 9

Starling’s Law of the Heart

Answer 9

The greater the stretch placed on the myocardial fibers, the greater the force with which they contract which leads to an increase in STROKE VOLUME

**SMALLER SPACE -> INC blood pressure
BIGGER SPACE -> DEC blood pressure

ensures that blood volume discharged from the heart is equal to the volume entering its chambers.

Question 10

CONSTANTLY CHANGING

Answer 10

HEART RATE
STROKE VOLUME
PERIPHERAL RESISTANCE

Question 11

Cardiovascular Regualtion

Answer 11

• time perfusion ->send blood to where it is needed

Question 12

Cardiac Output Increases

Answer 12

Blood Pressure Rises 
Baroreceptors in Aortic Arch and Caortid Sinuses are STIMULATED 
Sensory Impulses to Cardiac center 
Parasympathetic Impulses to Heart 
S-A Node Inhibited 
Heart Rate Decreases 
Blood Pressure Returns to Normal

Question 13

Stroke volume

Answer 13

volume of blood discharged by the left ventricle with each contraction.

**amt of blood pumped out of heart per beat

Question 14

Cardiac output

Answer 14

volume of blood discharges by the left ventricle per minute; equals stroke volume x heart rate.

**amt of blood ejected from heart per minute

Question 15

Heart Action

Answer 15

produces blood pressure by forcing blood into arteries.

determines how much blood enters the arterial system with each ventricular contraction

Question 16

Blood Volume

Answer 16

the sum of the formed elements and plasma volumes in the vascular system

Blood pressure is directly proportional to the blood volume within the cardiovascular system. Changes in blood volume alter blood pressure.

Question 17

Peripheral Resistance

Answer 17

amt of resistance of blood flow

Force created by friction between the blood and the walls of the blood vessels; hinders blood flow

Question 18

Viscosity

Answer 18

ease with which a fluid’s molecules flow past each other. Increased viscosity -> increased resistance to flow.