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Male Sexual Response: Erection & Ejaculation01:17

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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.
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Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.
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The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
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Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
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The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
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Hormonal correlations of premature ejaculation.

Andrea Sansone1, Francesco Romanelli, Emmanuele A Jannini

  • 1Section of Medical Pathophysiology, Food Science and Endocrinology, Department of Experimental Medicine, "Sapienza" University of Rome, Viale Regina Elena, 324, 00161, Rome, Italy, andrea.sansone@uniroma1.it.

Endocrine
|January 2, 2015
PubMed
Summary

Premature ejaculation is a common male sexual dysfunction impacting quality of life. While research on causes and treatments is advancing, the precise endocrine control of ejaculation remains unclear, requiring further study.

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Area of Science:

  • Reproductive endocrinology
  • Men's sexual health

Background:

  • Premature ejaculation (PE) is the most common male sexual dysfunction, affecting up to one-third of men and significantly impairing quality of life.
  • Increased public interest and reduced delay in seeking medical advice for sexual dysfunctions have led to a greater demand for effective treatments.

Purpose of the Study:

  • To review the current understanding of the endocrine regulation of ejaculation.
  • To highlight the need for further research into the hormonal mechanisms underlying ejaculatory disorders.

Main Methods:

  • Literature review of studies on the causes and treatments of ejaculatory disorders.
  • Analysis of the established role of endocrine regulation in male reproduction.

Main Results:

  • While the endocrine control of ejaculation is not fully understood, sex steroid, pituitary, and thyroid hormones are implicated.
  • Existing research has significantly increased knowledge regarding PE and its management.

Conclusions:

  • The precise mechanisms of endocrine control over ejaculation require further investigation.
  • Identifying specific hormonal targets is crucial for developing novel treatments for premature ejaculation.