Chapter 17 Vascular System

Question 1

The systemic system is powered by the ?

Answer 1

L ventrical and has a long pathway through all the body

Question 2

The pulmonary circuit is supplied by ?

Answer 2

R ventrical. Short low pressure circulation

Question 3

In the Systemic circuit Arteries carry?

Answer 3

Oxygenated blood

In the pulmonary circuit arteries carry deoxygenated blood

Question 4

In the systemic circuit Veins carry ?

Answer 4

Deoxygenated blood

Pulmonary circuit oxygenated blood

Question 5

Elastic arteries are located near the heart they include?

Answer 5

Aorta and it’s primary branches

Question 6

Muscular (distributing) arteries

Answer 6

Deliver blood to organs
Thickest tunica media of all blood vessels
More smooth muscle less elastic
Less able to stretch more vasoconstriction

Question 7

Arterioles

Answer 7

Smaller arterioles lead directly to capillary beds.

Question 8

Define blood flow

Answer 8

The amount of blood that flows through blood vessels, organs, or systemic circulation in millilitres per minute.

Question 9

Blood pressure define

Answer 9

The force the blood exerts against the inner walls of blood vessels.

Question 10

Define Resistance

Answer 10

The friction between blood and blood vessel walls. Blood pressure must over come this force for the blood to continue flowing.

Question 11

The maximum pressure during ventricular contraction is called

Answer 11

Systolic pressure

Question 12

The lowest pressure that remains in the arteries before the next ventricular contraction is called the

Answer 12

Diastolic pressure

Question 13

What are activated by increase atrial bp?

And where are they located

Answer 13

Baroreceptors

Carotid sinuses
Aortic arch
And in the walls of most neck and thoracic arteries

Question 14

Chemoreceptor reflexes

Answer 14

Activated by increase bp
Stretching causes BR to send impulses to CV center.
Inhibits the cardioacceleratory and vasomotor while stimulating the cardioinhitor center.

By decreases as a result.

Question 15

Major hormones that regulate by act on the

Answer 15

Kidneys

Question 16

Hormones that work to retain water + sodium therefore increase BP

Answer 16

ADH (from posterior pituitary)
Agiotensin II (liver)
Aldosterone (adrenal cortex)

Question 17

Hormones that increase water and sodium excretion therefor lowering BP.

Answer 17

Atrial naturectic hormone (heart)

Question 18

Aterial system consists of

Answer 18

Aorta, l + r pulmonary arteries

Question 19

Elastic arteries

Answer 19

Located near the heart
Have thick walls
Aorta and primary branches most elastic

Question 20

Muscular arteries

Answer 20

Distribute blood to specific body parts

Question 21

Define BP

Answer 21

Cardiac output x peripheral resistance

Force of area exerted on the wall of blood vessels by blood