Blood pressure

Question 1

What generates blood pressure in the heart?

Answer 1

the left ventricle

Question 2

Left ventricle BP

Answer 2

-the blood pressure here fluctuates a lot
- 120 mmHg (contract) to almost 0 (relaxed)

Question 3

Aortic BP

Answer 3

-pressure in the left ventricle = pressure in aorta (120-80 mmHg)
this is because of the opening of aortic semilunar valve

Question 4

Capillaries

Answer 4

-one layer
-where diffusion happens which works best for short distance

Question 5

Elastic Arteries

Answer 5

-thick walls, a lot of smooth muscle, elastin
-can take pressure and volume to out to aorta

Question 6

Arterioles

Answer 6

-thinner walls smooth muscle
-can feel pulse

Question 7

Ventricular contraction

Answer 7

aorta is directly connected to left ventricle
-when the ventricle contracts, pushes the stroke volume to aorta
-Aorta and arteries expand and store pressure in elastic walls

Question 8

Ventricular relaxation

Answer 8

-when relaxed blood will want to go back into the ventricle
-aortic semilunar valve prevents it from doing that
-smooth muscle control keeps blood going in upward direction to the rest of the circulatory system

Question 9

Blood pressure

Answer 9

Systolic/ diastolic

Question 10

Pulse pressure

Answer 10

systolic - diastolic

Question 11

Mean arterial pressure (MAP)

Answer 11

diastolic + 1/3 (pulse)
or
1/3 (systolic) + 2/3 (diastolic)