Human Breathing Flashcards
Where does each nostril lead to
Each nostril leads to the nasal chamber
What makes air easier to pass from the lungs to bloodstream
Filtered or cleaned by the hairs and mucus
Moistened
Warmed
What is the name of the flap of tissue in the pharynx
Epiglottis
What does the larynx do
Contains two vocal cords that vibrate to produce sound
What converts sounds to speech
Tongue or lips
What are the trachea and its subdivisions made up of
Muscle, elastic fibres with incomplete c strings of cartilage
What is the importance of cartilage in the structure of the trachea ect
It is strong snd rigid snd prevents tubes from closing when air is drawn into them
Where doesnt have cartilage
Brochioles - become narrow during asthma attack
What protects the lings from infection
Mucus traps eg dust
Cilia beat and move particals upwards past epiglottis and thrn pass throigh oesophogus
What lines each lung
Pleural membranes
Outer - lines chest wall and diaphra,
Inner - lines the lungs
What is the gap inbetween pleural lines
Pleural cavity
Contains liquid that lubricates membranes reducing friction when breathing
How are the alveoli adapted for gaseous exchange
There is a huge amount
Thin walled
Moist structure
Network of capillaries
Carbon dioxide and water enter alveoli how?
They pass out of cyroplasm to blood plasma and then diffuse to alveoli
What happens to oxygen from alveoli
Reverse direction to co2
From alveoli to blood plasma
What controls the rate of breathing
Brain
