Exam Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, gas exchange - Answer: diffusion at the respiratory surface
ventilation - Answer: air or water is moved over special gas exchange organs
partial pressure - Answer: the pressure of one particular gas in a mixture
respiratory system - Answer: the collection of cells, tissues, and organs responsible for gas exchange
between an animal and its environment
gill - Answer: Organ that exchanges gases beween blood and surrounding water
operculum - Answer: the stiff flap of tissue that covers the gills of fish
lung - Answer: respiratory organ used for gas exchange between blood and air
tracheal system - Answer: open circulatory system composed of spiracles, trachea, and tracheoles used
to exchange gases
spiracles - Answer: small opening that connects air-filled trachea to the external environment for gas
exchange
trachea - Answer: connects larynx to bronchi (windpipe)
bronchi - Answer: one of a pair of large tubes that lead from the trachea to each lung
bronchioles - Answer: One of the small tubes in lungs that carry air from the bronchi to the alveoli
alveoli - Answer: One of the tiny air-filled sacs of a mammalian lung
diaphragm - Answer: Muscular sheet of tissue that separates the chest and abdominal cavities