Transcript Respiratory System2010_2

Why we need a ventilation System?
• Amoebas don’t need a ventilation system because
they are in an environment where oxygen is
always at a higher concentration outside the cell
than inside the cell so oxygen will continue to
diffuse into cell.
• Humans bodies are to thick and only our outside
cells are exposed to air. Diffusion wouldn’t be
efficient. A ventilation system is needed to get
oxygen to cells deep in your body tissues.
• We also need to keep the concentration gradient
there to make sure oxygen diffuses in the right
direction.
• Tidal volume
– Volume of air inhaled
and exhaled with
each breath
• Vital capacity
– Maximum volume
inhaled and exhaled
during forced
breathing
• Residual volume
– Air left in alveoli after
forced exhalation
• Factors that impact it
– Sex
– Height
– Smoking
– Physical Activity
– Altitude
• O2 transport
– Low solubility of O2 in
H2O
– Respiratory pigments are
proteins with metal
atoms
• Hemoglobin – Fe
• Hemocyanin – Cu
• Allow reversible binding
of O2
• Drop in pH results in a
lowered affinity of
hemoglobin for O2
concentration and
pressure drives the
movement of gases
into and out of
blood
Asthma-is an inflammatory
disorder of the airways
Triggers -pollen, smoke, dust or
mold, a cold, or even exercise
Air moves freely through the
airways.
Two main affects on your lungs:
-first is inflammation, airway tissues irritated, red, and swollen. Inflammation is
always there, even when you are not having a lot of symptoms. When the
tissues become inflamed, mucus also plugs the airways, decreasing airflow.
-second is constriction, tightening of muscles around your airways.
Its harder for air to move in and out of the lungs
Affects-asthma attack, wheezing, chest tightness, or shortness of breath.
Daily treatment plan, you can reduce your symptoms and help prevent
future attacks.
Anemia-is the lack of oxygenated blood in
the body
Causes: Anemia is caused by a lack of
oxygen in the blood. The main cause is
a lack of iron (main component of
hemoglobin) in the blood.
SYMPTOMS
Paleness of the skin.
Paleness of the eyelids.
Paleness of the lips.
Paleness of the fingernails.
Spoon-shaped fingernails due to
lack of iron.
Paleness of the gums.
Brittle hair.
Increased respiration.
TREATMENTS
A balanced diet, eating healthy food
especially those that contain a high
amount of iron. Some
recommendations: lentil soup, spinach,
egg yolks, dried prunes, broccoli,
turnips and whole grains (with hulls).
Where is CO found?
CO is found in combustion fumes, such as those produced by cars and trucks,
small gasoline engines, stoves, lanterns, burning charcoal and wood, and gas
ranges and heating systems.
What are the symptoms of CO poisoning?
The most common symptoms of CO poisoning are headache, dizziness,
weakness, nausea, vomiting, chest pain, and confusion. High levels of CO
inhalation can cause loss of consciousness and death.
How does CO poisoning work?
Red blood cells pick up CO quicker than
they pick up oxygen. If there is a lot of CO
in the air, the body may replace oxygen in
blood with CO. This blocks oxygen from
getting into the body, which can damage
tissues and result in death.