Functional anatomy of the male feline urethra: Morphological and physiological correlations
Functional anatomy of the male feline urethra: Morphological and physiological correlations
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DOI：
10.1016/s0022-5347(01)61989-x
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发表时间：
1999-02-01
影响因子：
6.6
通讯作者：
Grill, WM
中科院分区：
文献类型：
--
作者：
Wang, BQ;Bhadra, N;Grill, WM
将解剖学和组织学方法与尿道压力分布 (UPP) 测量相结合，研究雄性猫尿道的功能。使用带有两个微隔膜压力传感器的硅橡胶导管来测量 UPP，检查每个节段尿道的大体解剖结构和超微结构，并将其与压力分布数据相关联。前列腺前尿道由三层平滑肌组成，而前列腺远端的横纹肌占主导地位。尿道周围横纹肌组织的功能导致前列腺后尿道和尿道球的基线压力增加和压力快速波动。 UPP 受到膀胱压力、测量重复、尿道中传感器方向以及测量导管类型的影响。良好控制的高保真度测量使得 UPP 的特征与尿道和周围肌肉组织的解剖结构之间建立了明确的相关性。此外，对尿道超微结构和微观解剖结构的观察扩展了先前对盆腔尿道的描述。
Anatomical and histological methods were combined with measurements of the urethral pressure profile (UPP) to investigate the functional aspects of the urethra in male cats. A silicone rubber catheter with two microdiaphragm pressure transducers was used to measure the UPP, Gross anatomy and ultrastructure of the urethra at each segment were examined and correlated with the pressure profile data. The preprostatic urethra was composed of three layers of smooth muscle, while distal to the prostate striated muscle became predominant. Increased baseline pressure and rapid fluctuations in pressure in the postprostatic urethra and bulbourethra resulted from the function of periurethral striated musculature. The UPP was affected by the bladder pressure, repetition of the measurement, the sensor orientation in the urethra, and the type of measurement catheter. Well controlled high fidelity measurements enabled a clear correlation to be established between the features of the UPP and the anatomy of the urethra and surrounding musculature. Additionally, observations on the ultrastructural and microscopic anatomy of the urethra extend a previous description of the pelvic urethra.