respiritory system
- Created by: Chantelle..
- Created on: 09-01-19 16:22
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- respiratory system
- nasal cavity
- main route of air entry to the blood
- lined with ciliated epithelial cells
- contain mucus creating cells
- lined with ciliated epithelial cells
- function
- warm, filter and clean the air
- main route of air entry to the blood
- larynx
- produces vocal sounds as air passes over the vocal cords
- function
- large role in speech
- ensures food passes into the oesophagus and not trachea
- trachea
- muscular tube with cartilage rings around it
- function
- allows flexability
- passage for air to be passed to the bronchi
- bronchi
- main passageway for air to the lungs
- cartilage rings present in the bronchi
- function
- control air entry
- through contraction and relaxation of muscle walls
- regulates speed and volume of air flow in the lungs
- main passageway for air to the lungs
- bronchioles
- passage from the bronchi
- allows air to be passed
- no cartilage
- would interrupt with flexability
- function
- control air entry
- through contraction and relaxation of muscle walls
- regulates speed and volume of airflow
- passage from the bronchi
- pleural membranes
- closed sac of plural fluid
- layer on the surface of the lung
- layer on the internal surface of the ribcage
- function
- prevents friction during breathing
- allows the lungs to glide
- prevents friction during breathing
- lungs
- main organs of the respiratory system
- function
- transport oxygen from the air to the blood
- removes carbon dioxide from the blood
- alveoli
- tiny air chambers
- at the end of each bronchiole
- walls are one cell thick
- surface covered in capillaries
- function
- allows gaseous exchange to take place
- diaphragm
- a large dome shaped sheet of muscle
- encloses the lower surface of the chest cavitiy
- function
- separates lungs from the rest of the body
- supports inspiration and expiration
- intercostal muscles
- occupy the spaces between the 12 pairs of ribs
- function
- their contraction allow chest expansion for breathing
- nasal cavity
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