first part of respitory Flashcards
oxygen is very important
the trillion cells in our body needs a endless supply of oxygen.We cannot do without oxygen,for even a little while,as we can with food and water
when cells use oxygen
they give off carbon dioxide,a waste product the body must get rid of.
The respitory system provides
oxygen to the body ,disposes carbon dioxide,and helps regulate blood ph.
Gas exchange
occurs in the air sacs of the lungs,calles the aveoli,and at capillary beds around the body
Gas exchange is the process of swapping oxygen (O₂) and carbon dioxide (CO₂) between the lungs, blood, and body tissues. It happens in two main places:
In the lungs (external respiration):
When you inhale, oxygen moves from the air in your lungs (alveoli) into your blood.
At the same time, carbon dioxide moves from your blood into the alveoli to be exhaled.
In the tissues (internal respiration):
Oxygen in the blood is delivered to body cells.
Cells use the oxygen for energy and produce carbon dioxide as a waste product.
Carbon dioxide then moves into the blood to be transported back to the lungs for removal.
This process is essential because it keeps oxygen levels high enough for energy production and removes waste CO₂ to prevent it from building up in the body.
too much carbon dioxide
will cause the ph to be more acidic
How do the cardiovascular and respiratory systems work together to supply the body with oxygen and dispose of carbon dioxide?
The respiratory system oversees gas exchanges between the blood and the external environment. The cardiovascular system transports respiratory gases (oxygen and carbon dioxide) between the lungs and the body’s cells using blood as the transporting fluid. If either system fails, cells die due to oxygen deprivation and carbon dioxide accumulation.
The organs of the respiratory system include
the nose, pharynx, larynx, trachea, bronchi and their smaller branches, and the lungs, which contain the alveoli (al-ve′o-li), or terminal air sacs (Figure 13.1)
the aveoli
the gass exchange with blood only happens with the aveoli.
Deoxygenated blood from the body returns to the right side of the heart.
The right side of the heart pumps this deoxygenated blood into the pulmonary arteries, which carry it to the lungs.
In the lungs, the blood moves through tiny blood vessels called capillaries surrounding the alveoli.
When you breathe in, oxygen from the air inside the alveoli moves across the alveolar membrane into the blood.
Carbon dioxide, which is waste from the body’s metabolism, moves from the blood into the alveoli to be exhaled.
The now oxygenated blood returns to the left side of the heart and is pumped out to the rest of the body to deliver oxygen to the cells.
So, the alveoli really act as the site where oxygen enters the blood and carbon dioxide exits, all while you breathe in and out!
the other respitory systems other than aveoli
are really just conducting passageways that carry air through the lungs.
The passageways from the nose to the larynx are called the
upper respiratory tract,
the trachea to the alveoli are the
lower respiratory tract.
conducting passageways also
purify, humidify, and warm incoming air. Thus, the air finally reaching the lungs has fewer irritants (such as dust or bacteria) than the air outside, and it is warm and damp.
