stirrup-bone
Definition
Noun (Anatomy): "stirrup-bone" refers to the innermost of the three small bones in the middle ear of mammals, also known as the stapes. It is shaped like a stirrup (the part of a saddle that supports a rider's foot) and transmits sound vibrations from the incus to the oval window of the inner ear.
Usage Examples
- (It is the tiniest ossicle in the ear.)
- (Injury to this bone affects sound transmission.)
- (The surgeon repaired the middle ear bone.)
Advanced Usage
"stirrup-bone reflex": an involuntary contraction of the stapedius muscle that dampens loud sounds, protecting the inner ear.
- The stirrup-bone reflex helps prevent damage from sudden loud noises. (The stapes muscle tightens to reduce vibration.)
"stirrup-bone fracture": a rare injury to the stapes, often from head trauma or barotrauma.
- A stirrup-bone fracture may require surgical repair. (A break in the stapes needs medical intervention.)
Variants and Related Words
Stapes (n): the scientific term for the stirrup-bone.
- The stapes is the third ossicle in the chain. (It is the technical name for the stirrup-bone.)
Stapedial (adj): relating to the stapes or stirrup-bone.
- Stapedial otosclerosis is a condition where the stapes becomes fixed. (It describes a disease of the stirrup-bone.)
Synonyms
- Stapes: the formal anatomical term.
- Stirrup: a common, shortened name for this bone in informal medical contexts.
Related Idioms
- There are no common idioms using "stirrup-bone" due to its specialized anatomical nature. However, in ear anatomy contexts, the phrase "ossicular chain" includes the stirrup-bone.
- The ossicular chain consists of the malleus, incus, and stirrup-bone. (The three bones work together to transmit sound.)