Lecture Exam 3 - 34F) - 34G) Circulation and Gas Exchange – Humans

Question 1

• So how does the Pulmonary circuit bring blood from the lungs?

Answer 1

Right side of the heart/Right Ventricle: So it pumps blood into the Pulmonary trunk, which then goes into the Pulmonary arteries, into the capillaries, picks up Oxygen rich, moves it down to the left side of the heart.

Question 2

• Once the right ventricle contacts, what happens?

Answer 2

Pushes blood/oxygen deficient through the lungs via Pulmonary arteries

Question 3

• Diffusion works in the lungs how? Do we need energy for this to occur?

Answer 3

Where we have the exchange of O2 and Co2

Question 4

• Oxygen rich comes back to the heart via the what?

Answer 4

Pulmonary Veins - because remember, this bring it Oxygen rich from the capillary beds after Diffusion takes place, then its comes back into the Left side of the heart.

Question 5

• So the right side of the heart is pumping blood into the lungs, via the lungs which again is called our what?

Answer 5

Pulmonary Circuit

Question 6

• Which side of the heart is the Systematic Circuit?

Answer 6

Left

Question 7

• The left side pumps Oxygen ___ blood into the Capillary beds into what?

Answer 7

Oxygen rich into organs AND tissues (rest of the body) – VIA THE AORTA

Question 8

• So do keep in mind, when the Right ventricle pumps deoxygenated blood through the Pulmonary Trunk (passes through the Semilunar Valve 1st), it then goes through the Pulmonary Arteries which then pumps Oxygen____ to the Capillary beds (one side to the other side of Capillary beds) which then pumps Oxygen ______ through the Pulmonary Veins, then through the Left ______ then through the _____- then through the Left _______ then through the ______ to the rest _____ then Oxygen _____ goes back through the _______ and the _______ back to the Right ______ again.

Answer 8

Rich
Oxygen rich to the Pulmonary veins
Left Atrium
Mitral Valve
Left Ventricle
Aorta
rest of the body
Poor
Supieror Valve
Inferior Valve
Atrium

Question 9

• In Mammalian Circulation – Oxygen (O2) is being pumped into the body tissues via the what?

Answer 9

Aorta

Question 10

• Once O2 Rich blood from the Aorta goes to arteries and through the body, it then starts to branch to what 3 places?

Answer 10

Capillaries head/arms (carotid artery) –
Coronary artery (heart) –
Aorta
Abdomen, capillaries organs/legs.

Remember:
The right side of your heart receives oxygen-poor blood from your veins and pumps it to your lungs, where it picks up oxygen and gets rid of carbon dioxide.

Question 11

• In Mammalian Circulation Systemic – blood returns, then deposited into the Capillaries beds via what?

Answer 11

Via diffusion

Question 12

• How does blood get dumped into the right atrium of the heart? What is doing the pumping in the right ventricle? Via Superior and Inferior vena cava – but how the right Ventricle Pumps?

Answer 12

I think because of the deoxygenated poor blood that makes it fill up kind of like a pipette and then has to contract to push blood out.

Question 13

• In Mammalian Circulation – The superior vena cava is part of the___

Answer 13

head, arms

Question 14

• IN Mammalian Circulation – The Inferior vena cava is part of the____

Answer 14

trunk, hind limbs

Question 15

• Dumping blood into the right atrium / right ventricle is pumping, but what kind of Oxygen is with Co2 rich blood which is in the right atrium to right ventricle?

Answer 15

Oxygen Poor - just like in humans, so it would be Oxygen Poor on the Right Atrium/Ventricle while its Co2 Rich.