What Are the Smallest Conducting Passageways of the Lungs

question 30

Multiple Choice

What are the smallest conducting passageways of the lungs?

• A) main (primary) bronchi
• B) alveoli
• C) terminal bronchioles
• D) alveolar ducts

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Definitions:

Synaptic Knob

The part of a neuron that connects to another neuron or muscle cell, facilitating the transmission of neurotransmitters across the synaptic gap.

Synapse

The junction between two neurons or a neuron and a muscle cell, where electrical or chemical signals are transmitted from one cell to another.

Neurilemma

The outermost layer of a nerve fiber, crucial for the regeneration of peripheral nerve fibers and also known as the Schwann cell sheath.

Myelinated Pathway

Neural pathways composed of axons that are coated with myelin, which speeds up the transmission of nerve impulses.