Lab 10: Respiratory System Flashcards
Which processes are involved in respiration?
1) Ventilation - air in and out of lungs
2) Gas exchanged between blood and lungs
3) Transport of O2 and CO2 in blood
4) Gas exchange between blood and tissues
5) Cellular metabolism.
What does respiratory system consist of?
Nose, nasal cavity, pharynx, larynx, trachea, bronchi, and lungs.
How are respiratory movements accomplished?
By diaphragm and muscles of thoracic and abdominal walls.
How is the pulmonary function measured?
By a respirometer
Define tidal volume (Vt).
Volume of air inhaled with each breath.
Define expiratory reserve volume (ERV).
Volume of air that can be forcefully exhaled following normal expiration.
Define inspiratory reserve volume (IRV).
Volume of air that can be forcefully inhaled following a normal inspiration.
Define residual volume (RV).
Volume of air remaining in lungs after maximal expiration.
Define vital capacity (VC).
Volume of air forcibly exhaled after maximal inspiration.
Define total lung capacity (TLC).
Volume of air in lungs after maximal inspiration.
Define functional residual capacity (FRC).
Volume of air remaining in lungs at end of normal expiration.
Define inspiratory capacity (IC).
Amount of air that can be inspired by maximal effort beginning at end of normal expiration.
Define dead space volume (Vd).
Volume of air in each tidal volume that does not participate in respiratory gas exchange.
Define maximal voluntary ventilation (MVV).
Maximal volume of gas that can be ventilated during a given number of seconds (12-30) and is expressed as L/min. Aka maximal breathing capacity.
Define forced expiratory vital capacity (FEVC).
Maximal expiratory rate air can be forced from lungs following maximal inspiration.
