Penis: Anatomy, Picture, Erection, and Ejaculation - WebMD
Nettet17. mai 2024 · An erection occurs when your penis fills with blood, causing it to expand and become firm. You might have an erection if you feel sexually aroused, though sometimes they just happen. An...
Normal male sexual function: emphasis on orgasm and ejaculation
NettetDuring sexual arousal, NO is released from cavernous nerve terminals through the action of neuronal NO synthase . The NO activates guanylate cyclase, which in turn converts guanosine triphosphate to cyclic guanosine monophosphate (15, 17), leading eventually to smooth muscle relaxation and vasodilation .
Sexual arousal - Wikipedia
NettetSexual arousal can come from porn or other sexual material. The potential stimuli for sexual arousal vary from person to person, and from one time to another, as does the level of arousal. Stimuli can be classified according to the sense involved: somatosensory (touch), visual, and olfactory (scent).
Physiology of Penile Erection and Pathophysiology of Erectile ...
NettetSexual stimulation triggers release of neurotransmitters from the cavernous nerve terminals. This results in relaxation of these smooth muscles and the following events: Dilatation of the arterioles and arteries by increased blood flow in both the diastolic and the systolic phases. Trapping of the incoming blood by the expanding sinusoids.
Neurophysiology of male sexual arousal—Behavioral perspective
Nettet24. jan. 2024 · Neuronal structures such as the amygdala, bed nucleus of stria terminalis, hypothalamus, nucleus raphe, periaqueductal gray, and nucleus paragigantocellularis play crucial roles in controlling the level of arousal and regulating peripheral responses via specific autonomic effectors.
Erection - Wikipedia
NettetPenile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual attraction or libido, although erections can also be spontaneous. The shape, angle, and direction of an erection vary considerably between humans.
Erection | Penile Anatomy, Neurotransmitters & Hormones
NettetDuring erection, blood flows into the spaces, causing distention and elevation of the penis. The amount of blood entering the penis can be increased by physical or psychological stimulation. As blood enters, there is a temporary reduction in the rate and volume of blood leaving the penis.
Anatomy and Physiology of Erection, Ejaculation, and Orgasm
NettetThe arousal stage continues to the threshold of orgasm. Changes seen during the desire stage are intensified. Breathing, heart rate, and blood pressure continue to increase, and muscle spasms begin in the face, hands, and feet. The …
Physiology of Erection and Pathophysiology of ... - Urologic …
NettetErectile dysfunction. Pathophysiology. Impotence. Key points. Introduction. The complex pathway from sexual arousal to penile erection has been elucidated in great detail. Advances in neuroimaging have delineated the cortical and limbic system involvement in …
Neuroanatomy and function of human sexual behavior: A …
Nettet30. sep. 2019 · In males, physiological sexual arousal begins with an erection, which is a reflexogenic event driven by sensorial signals conveyed by dorsal nerve of the penis after stimulation of free nerve endings situated along the penis and glans.