General Anatomy · Respiratory System · Medium

Bronchiole

Meaning: A small airway branching off a bronchus, without cartilage, leading towards the air sacs.

In practice: In asthma, smooth muscle around the bronchioles contracts, narrowing the airways and causing wheeze.

Quick check

Two questions on related general anatomy words.

Which word means: The smooth muscle of the bladder wall that contracts to expel urine.

Which word means: The thighbone — the longest and strongest bone in the human body.

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