Soc 17 Flashcards
Respiration
the movement of air from outside the body into the cells within tissues.
Diaphram
the primary muscle usrd in the process of inspiration, or inhalation. A dome-shaped sheet of muscle that separates the chest from the rest of the body cavity.
Trachea
the tube that takes the air into the chest, also known as the wind pipe.
Bronchus
tube along within air passes from the trachea into the lungs.
Bronchioles
smaller branches coming off the bronchi.
Aveoli
tiny sacs at the end of the bronchioles, where bas exchange take place
Haemoglobin
Haemoglobin: a type of protien found in every red blood cell.
Gaseous exchange
the delivery of oxygen from the lungs to the bloodstream and the removal of carbon dioxide from the tissues
How does the diaphram work?
When breathing in, the intercostal miscles contract and lift the chest upwards.
Oxygen debt
The ammount of oxygen needed at the end of a physical activity to break down lactic acid.
Vital capacity and Tidal volume
Measures that feature in sport, training and evaluation.
Vital capicty is the greatest amount of air that can be pass into and out of the lungs by the most forceful inspiration and expiration.
Tidal volume is the amount of air inspired and expired with each normal breath at rest or during exercise.
Inhaled and exhaled air
The air you breathe in is 20% oxygen and 0.4% carbon dioxide
The air you breathe out is 16% oxygen and 4% carbon dioxide
While resting you breathe 21 times a minute, taking in about half a litre of air with each breath. This increases when you exercise.
How does the exercise i pact the respiratory system?
1.After a sustained period of regular exercise, the improved efficiency of the lungs will allow
better delivery of oxygen to the working muscles, therefore the body will be able to cope better during exercise.
Additionally, carbon dioxide will be removed more efficiently
3. More alveoli become available for gases exchange
4. More blood vessels therefore an increase in capillaries around the alveoli = more oxygen
