精液收集和射精引发了公羊生殖系统血液流量的变化
Mariana Garcia Kako Rodriguez1, M Isabel Vázquez2, Julia Giriboni3
1Unidad Académica de Fisiología, Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República (UdelaR), Ruta 8 km 18, 13000, Montevideo, Uruguay. mariana_kako@hotmail.com.
Tropical animal health and production
|September 22, 2023
概括
射精改变了公羊生殖器官的血液流动,影响了关键动脉. 这些血液动力学变化根据使用的射精方法略有变化,超静脉脉缩速度峰值显示了最显著的程序差异.
科学领域:
- 生殖生理学 生殖生理学
- 兽医医学 兽医医学 兽医医学
- 动物科学动物科学
背景情况:
- 了解射精对男性生殖功能的生理影响,对于动物繁殖和生殖健康至关重要.
- 以前的研究集中在射精的直接影响上,对随后的丸和辅助性腺血流的血液动力学变化给予了较少的关注.
研究的目的:
- 调查射精是否改变丸和辅助性腺血流在公羊.
- 要确定这些射精后的血流变化是否根据射精的方法不同.
主要方法:
- 十二只成年科里代尔公羊接受了四种不同的射精程序:电射精,人工阴道,通过直肠超声波引导的辅助性腺按摩和自然交配.
- 血液动力学参数,包括内动脉和上动脉的最大静脉缩速度 (PSV) 和末端静脉缩速度 (EDV),在射精前30分钟和射精后90分钟即测量.
主要成果:
- 在所有组中,在射精后90分钟观察到内动脉PSV显著下降 (P=0.01) 和上动脉PSV显著增加 (P=0.042).
- 射精改变了内动脉和副静脉动脉的PSV,以及副静脉动脉EDV.
- 超直肠动脉PSV是唯一的血液动力学变量,根据射精程序显示出显著差异.
结论:
- 射精会导致雄羊生殖系统的血液流动动态发生变化.
- 虽然射精会影响生殖血液流动,但具体的血液动力学变化会根据使用的射精方法呈现小差异.
- 超直肠动脉PSV被确定为一个敏感的指标,反映了射精方法的程序差异.
相关概念视频
01:17Male Sexual Response: Erection & Ejaculation
2.7K
Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
2.7K
01:15Sperm Transport
892
The journey of sperm from its origin to the point of ejaculation begins within the seminiferous tubules of the testis. Here, Sertoli cells produce fluid that propels non-motile sperm through a series of conduits, starting with the straight tubules leading to the rete testis. This interconnected network of tubules acts as the initial pathway for sperm, guiding them into the efferent ductules and then into the epididymis for maturation.
The maturation phase occurs in the epididymis, where sperm...
The maturation phase occurs in the epididymis, where sperm...
892
01:25Accessory Ducts of the Male Reproductive System
1.2K
The male reproductive system is a complex network of organs and tissues that work together to produce and transport sperm. The epididymis, vasa deferens, ejaculatory ducts, and urethra are the accessory ducts involved in sperm maturation and transportation. These ducts play a critical role in the production and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle....
The epididymis is a small, comma-shaped organ located at the back of each testicle....
1.2K
01:16Accessory Glands of the Male Reproductive System
1.7K
The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
1.7K
01:22Sperm Structure and Semen Composition
2.6K
During ejaculation, males release around 2-5 milliliters of semen, which is a complex mixture of mature sperm and various fluids produced by accessory glands. The mature sperm cells measure approximately 60 micrometers in length and consist of a head, neck, midpiece, and tail. The head is flattened and tapered, measuring about 4 to 5 micrometers in length. It contains a nucleus with condensed chromosomes and an acrosome, a cap-like structure filled with enzymes essential for penetrating the...
2.6K
01:17Autoregulation of Blood Flow
2.4K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
2.4K