Which of the Following Is True of the Lower Respiratory

question 11

Multiple Choice

Which of the following is true of the lower respiratory tract?

• A)Contains the respiratory organs in the chest
• B)Contains all respiratory organs
• C)Contains all respiratory structures lined with mucous membrane
• D)Contains all organs distal to the larynx

---

Definitions:

Depolarization

A decrease in membrane potential that makes the interior of a cell less negative compared to the outside, crucial for nerve impulse transmission.

Voltage-Gated Channel

A type of protein channel in cell membranes that opens or closes in response to changes in electrical membrane potential.

Synaptic Vesicle

Secretory vesicle in the presynaptic terminal containing neurotransmitter substances.

Chemical Synapse

A specialized junction at which a neuron communicates with a target cell across a synaptic cleft using chemical messengers.