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Oxygen Transport
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Created by
Tayeeba Choudhury
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Cards (82)
What is the chemical formula of the heme group shown in the image?
CH=CH2
What are the main components of the heme group?
Porphyrin ring
Iron (Fe2+)
atom at the center
Methyl, vinyl, and propionate
side chains
What is the function of the alveoli in the lungs?
Movement
of
air
What happens to carbon dioxide during gas exchange in the lungs?
Carbon dioxide moves from
capillary
into
alveolus
What are the tiny sacs in the lungs called?
Alveoli
What are the key components involved in the function of the alveoli?
Alveolar
sacs
Capillary walls
Red
blood cells
Oxygen
Carbon dioxide
How thick are the walls that gases pass through in the lungs?
One cell thick
What is the role of hemoglobin in red blood cells?
Transports oxygen from lungs to tissues
Binds
oxygen molecules
via
heme groups
Contributes to the red color of blood
Where does air travel after entering the nose or mouth?
Down the
airways
to the
lungs
What is the role of alveoli in the respiratory system?
They
absorb oxygen
from
the
air
What are the thin-walled blood vessels in the lungs called?
Capillaries
How is carbon dioxide removed from the body?
When you
exhale
What systems are involved in oxygen transport?
Respiratory system
: brings oxygen into lungs
Circulatory system
: delivers oxygen throughout the body
What are the main components of the respiratory system?
Lungs
,
airways
, and
diaphragm
How does the structure of the alveoli facilitate efficient gas exchange?
The thin
capillary walls
and large surface area of the alveoli allow for rapid diffusion of gases
If a person is exercising and their muscles require more oxygen, how would this affect the human gas exchange process?
The rate of oxygen intake and
carbon dioxide
expulsion would increase
What are the main steps of the human gas exchange process?
Oxygen (O2)
is taken in through the lungs
Oxygen diffuses into the bloodstream and binds to
red blood cells
Carbon dioxide (CO2)
diffuses from the bloodstream into the lungs
Carbon dioxide is expelled from the body through exhalation
What occurs when you breathe out?
Carbon dioxide
leaves the body
What happens when you breathe in?
Air
enters through nose or mouth
What is the primary function of the respiratory system?
Bringing
oxygen
into the body
What factors affect oxygen transport efficiency?
Large surface area of
alveoli
Thin walls of alveoli
Proximity to
capillaries
Blood flow
Partial pressure
differences
What is the chemical formula of the heme group shown in the image?
CH=CH2
How does the iron ion in heme groups function in hemoglobin?
It binds to
oxygen molecules
How does greater blood flow influence oxygen transport?
It speeds up
gas transport
What is oxygen transport?
Movement of oxygen from
lungs
to
bloodstream
How does the partial pressure of oxygen (pO2) and carbon dioxide (pCO2) differ between the systemic arteries and systemic veins?
The systemic arteries have a
higher
pO2 and
lower
pCO2 compared to the systemic veins
What is the name of the iron-containing compound shown in the image?
Porphyrin
What is the name of the process shown in the image?
Human
gas exchange
What is the significance of the respiratory process in the body?
It ensures
oxygen
is transported throughout the body
What is the partial pressure of carbon dioxide (pCO2) in the systemic veins?
45
mmHg
What is the partial pressure of carbon dioxide (pCO2) in the systemic veins?
45
mmHg
What type of cells transport oxygen throughout the body?
Red blood cells
What gas dissolves into the plasma after gas exchange in the lungs?
Oxygen
What is the process of oxygen transport in the bloodstream?
Oxygen dissolves in
plasma
after
gas exchange
Binds to
hemoglobin
in
red blood cells
Red blood cells transport oxygen via the
circulatory system
Oxygen is delivered to all
tissues
What is the partial pressure of carbon dioxide (pCO2) in the alveolar air?
40 mmHg
What is the name of the group of molecules shown in the image?
Heme group
What is hemoglobin?
A
protein
with four
subunits
How does increased surface area affect oxygen transport efficiency?
It improves efficiency of
gas exchange
What gas is expelled by the lungs during human gas exchange?
Carbon dioxide
(CO2)
How do the walls of alveoli contribute to gas exchange?
Thin walls facilitate efficient
gas exchange
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