Week 8 Flashcards
List some functions of pulmonary ventilation.
- Venous blood flow
- Lymph flow
- Speech
- Smell
The lungs are mostly passageways and elastic tissue what is the role of eclectic tissue.
Lungs recoil passively when exhaling, conserving ATP.
What is the specific function of cilia in the trachea?
Move contaminated mucus to oropharynx for swallowing.
What does the epiglottis do?
Prevents food and water entering the respiratory passages.
When the diaphragm and intercostal muscles contract the?
Volume of the thoracic cavity increases.
A respiratory arrest would result from damage to what?
Medulla oblongata
What does the phrenic nerve do?
Stimulates the diaphragm to contract.
In the absence of respiratory surfactant?
It is difficult to keep the alveoli open.
Gases move across the respiratory membrane by what?
Diffusion
Most carbon dioxide is transported in the blood as what?
Bicarbonate
