Topic 12 - Circulatory Route

Question 1

circulatory routes

closed, double circulation

closed = ?

Answer 1

blood confined to heart and blood vessels

Question 2

circulatory routes

closed, double circulation

double = ?

Answer 2

2 routes (pulmonary + systemic)

Question 3

Name the 3 types of circulations in the adult circulation

Answer 3

1. pulmonary circulation
2. systemic circulation
3. coronary circulation (visible externally)

Question 4

pulmonary circulation

step 1:

Answer 4

right ventricle to lungs via pulmonary arteries (deoxy blood)

Question 5

pulmonary circulation

step 1: right ventricle to lungs via pulmonary arteries (deoxy blood)

step 2:

Answer 5

pick up oxygen in lungs via capillaries

Question 6

pulmonary circulation

step 1: right ventricle to lungs via pulmonary arteries (deoxy blood)

step 2: pick up oxygen in lungs via capillaries

step 3:

Answer 6

lungs to left atria via pulmonary veins (oxygenated blood)

Question 7

pulmonary circulation

starts at the:

Answer 7

right ventricle (deoxy blood)

Question 8

pulmonary circulation:

from the right ventricle to

Answer 8

pulmonary arteries (deoxy blood)

Question 9

pulmonary circulation:

from pulmonary arteries to

Answer 9

capillaries in respiratory portion of lungs (oxy blood)

Question 10

pulmonary circulation:

from capillaries in respiratory portion of lungs to

Answer 10

pulmonary veins (oxy blood)

Question 11

pulmonary circulation:

from pulmonary veins to

Answer 11

left atrium

Question 12

Systemic circulation

step 1:

Answer 12

left ventricle to organs via aorta (oxygenated)

Question 13

systemic circulation

step 1: left ventricle to organs via aorta (oxygenated)

step 2:

Answer 13

organs remove oxygen via capillaries

Question 14

systemic circulation

step 1: left ventricle to organs via aorta (oxygenated)

step 2: organs remove oxygen via capillaries

step 3:

Answer 14

organs to right atrium via superior + inferior vena cava (deoxygenated)

Question 15

overall route of systemic circulation

and name the subdivisions

cerebral =

heptatic =

coronary =

Answer 15

left ventricle to right atrium = systemic circulation

subdivisions

cerebral = brain

heptatic = liver

coronary = heart

Question 16

draw the coronary circulation

Answer 16

Question 17

fetal circulation

step 1:

Answer 17

fetus gets O_2, nutrients from + expels wastes to mothers blood

Question 18

fetal circulation

step 1: fetus gets O_2, from nutrients from + expels wastes to mother’s blood

step 2:

Answer 18

• exchange site in the placenta
  
  • blood supplies in close together, but do not mix

Question 19

fetal circulation

differences from adult circulation

1. umbilicle vein…
2. lungs + liver…
3. umbilicle arteries…

​

Answer 19

1. umbilicle vein (towards fetal heart)
2. lungs + liver basically non-functional
3. umbilicle arteries (away from fetal heart)

Question 20

name the 3 main parts of the body that is different between the adult circulation and the fetal circulation

Answer 20

1. umbilicle vein (towards the fetal heart)
2. lungs + liver basically non functional
3. umbilicle arteries (away from fetal heart)

Question 21

fetal circulation: differences from adult circulation

umbilical vein (towards the fetal heart)

Answer 21

• carries oxygenated blood from placenta to vena cava

Question 22

fetal circulation: differences from adult circulation

lungs + liver basically non functional

Answer 22

• 3 shunts to bypass (although some blood flow to these organs for nourishment/growth

Question 23

fetal circulation: differences from adult circulation

lungs + liver basically non functional

i.

ii.

iii.

Answer 23

i. ductus venosus
ii. foramen ovale
iii. ductus arteriosus

Question 24

fetal circulation: differences from adult circulation

lungs + liver basically non functional

ductus venosus

• connects _________ (oxy or deoxy?) to __________ (oxy or deoxy?) to _______ liver

Answer 24

• connects umbilical vein (oxy blood) to inferior vena cava (deoxy blood) to bypass iver
  
  • permits most of the oxygenated blood coming from the placenta to bypass the liver
• oxy and deoxy blood mixes
• mixed blood enters fetal heart via inferior vena cava

Question 25

in the fetal circulation mixed blood enters fetal heart via

Answer 25

inferior vena cava

Question 26

Fetal circulation: Differences from adult circulation: foramen ovale * hole in where? * allows what?

Answer 26

* hole in **interatrial septum** * allows **blood to move from the right to left atrium (bypass lungs)**

Question 27

what allows blood to move from the right to the left? ## Footnote a) ductus venosus b) foramen ovale c) ductus arteriosus

Answer 27

foramen ovale

Question 28

Fetal circulation: Differences from adult circulation: ductus arteriosus * connects what?

Answer 28

connects pulmonary trunk + aorta (bypass lungs)

Question 29

Fetal circulation: Differences from adult circulation: umbilical arteries (away from fetal heart) * returns what

Answer 29

returns mixed blood to placenta

Question 30

what returns mixed blood to placenta? ## Footnote a) umbilical veins b) lungs and liver c) umbilical arteries d) ductus arteriosus

Answer 30

umbilical arteries