Which of the following is responsible for generating pressure in pulmonry arteries?
Systole of the right ventricle
Which of the following is the primary site of gas exchange ?
Alveoli
nasal cavity→ Air is warmed, humidified and filtered
Pharynx : food and air
Larynx→ Voice box
Trachea : Cylinder tube made up of rings of cartilage that help support the trachea and keep it open for the air to travel through
Alveoli (in the alveolar sac ) is where the gas exchange occurs
Made of thin walled cells, have a lot of surface area and are in direct contact with capillaries
Nervous system regulates the involuntary breathing
It uses pH to do so.
Increase of CO2 concentration increases H+ concentration, so the blood pH become more acidic, this acidity tells the brain to send a signal to the intercostal muscles (los músculos que nos ayudan a respirar) and restores the pH to return to pH 7
