Anatomy of blood vessels

Question 1

Pulmonary circuit

Answer 1

heart -> lungs -> heart

Question 2

Systemic circuit

Answer 2

heart -> body -> heart

Question 3

3 types of blood vessels

Answer 3

arteries (conductance)
capillaries (exchange)
veins (capacitance)

Question 4

Arteries

Answer 4

carry O2^ blood away from heart (conductance)

Question 5

Arterioles

Answer 5

smaller form of artery (resistance)

Question 6

Capilaries

Answer 6

most numerous; where of O2 and CO2 between blood and tissues “exchange”

Question 7

Veins

Answer 7

70% of blood in venous circulation “capacitance”

Question 8

Tunica intima

Answer 8

innermost, simple squamous, thin and flat; simple squamous endothelium forms slick shiny surface

Question 9

Tunica media

Answer 9

elastic and smooth muscle tissue; thicker in arteries than in veins bc of higher pressure; smooth muscle contracts and relaxes (effects size of lumen)

Question 10

Tunica advantitia

Answer 10

tough connective tissue; support and protect blood vessels

Question 11

Lumen

Answer 11

opening of vessel where blood passes

Question 12

Systemic arteries are either ____ or ____ branches from aorta

Answer 12

direct or indirect

Question 13

20% of circulation in ____

Answer 13

brain

Question 14

Vertebral arteries and Carotid arteries join to form an _____ called the ____ that supplies the ______ with blood (located at base of brain)

Answer 14

anastamosis, circle of willis, brain

Question 15

Hepatic portal system

Answer 15

Hepatic portal vein -> 2nd capillary bed, ^digestive end products ->liver; liver detoxifies bad end products and makes good digestive end products usable

Question 16

Fetus gets blood through single umbilical ____ ^O2,blood goes out through paired umbilical _____ v O2

Answer 16

Vein, arteries

Question 17

_______ sends ^O2 through umbilical vein; receives v O2 through umbilical arteries

Answer 17

Placenta

Question 18

Ductus Venosus

Answer 18

blood bypasses the liver and portal system straight to the heart

Question 19

Foramen Ovale

Answer 19

opening between 2 atria in the heart, allows blood flow from R atrium directly to L atrium
(bypasses lungs and pulmonary circuit)

Question 20

Ductus arteriosis

Answer 20

connection between pulmonary artery and aorta, allows blood that goes through pulmonary artery to be directed to the aorta -> body