2026 Exam Questions and Answers
Graded A+
respiratory zone
respiratory bronchioles, alveolar ducts, alveoli
What does the Respiratory Zone do?
Allow inhaled oxygen to diffuse into the lung capillaries in exchange
for CO2
Conducting Zone
nose, pharynx, larynx, trachea, bronchi, bronchioles
What does conducting zone do?
conducts air to respiratory zone, humidifies, warms, and filters air
Most common cancer mutation?
Acquired
What does anticholinergic mean?
blockade of muscarinic receptors - This inhibits nerve impulses
responsible for involuntary muscle movements and various bodily
functions
What does dopamine do?
influences movement, learning, attention, and emotion. Dopamine
enables neurons in your brain to communicate and control
movement.
What does messenger RNA do?
Transcribes information from the DNA in the nucleus and carries it to
the cytoplasm, and then to the ribosome. Single-stranded,
intermediate molecule. Carries the instructions for making proteins.
What do ribosomes do?
Make proteins (protein synthesis)
Neurotransmitters
chemical messengers that cross the synaptic gaps between neurons
Neurotransmitters at the parasympathetic postganglionic synapses
Acetylcholine and nitric oxide
Atropine Neurotransmitters