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Measurement of inner ear vessel diameters with casting method
M Moriguchi1, H Masutani, M Sugita
1Department of Otolaryngology, Osaka City University Medical School, Japan.
Acta Oto-Laryngologica. Supplementum
|January 1, 1991
Summary
The stria vascularis in rat and guinea pig inner ears has larger blood vessels, suggesting slower blood flow. The anterior vestibular artery is also larger than the posterior vestibular artery.
Area of Science:
- Oto-rhino-laryngology
- Vascular Anatomy
- Inner Ear Physiology
Background:
- The inner ear's vascular supply is crucial for its function.
- Understanding cochlear and vestibular blood vessel dimensions is important for diagnosing and treating hearing and balance disorders.
Purpose of the Study:
- To measure and compare the diameters of inner ear blood vessels in rats and guinea pigs.
- To investigate the vascular characteristics of the stria vascularis and vestibular arteries.
Main Methods:
- Casting method using Mercox resin for scanning electron microscopy.
- Measurement of vessel diameters in all parts of the inner ear in rats and guinea pigs.
Main Results:
- Stria vascularis vessels were significantly larger in diameter than other cochlear lateral wall capillaries in both species, especially guinea pigs.
- The anterior vestibular artery (AVA) exhibited a larger diameter compared to the posterior vestibular artery (PVA).
Conclusions:
- The larger diameter of stria vascularis vessels suggests slow blood flow and greater blood retention capacity.
- The size difference between AVA and PVA correlates with the areas they supply within the vestibule.