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Erectile Dysfunction Pathophysiology

Penile erection is managed by two different mechanisms. The first one is the reflex erection, which is achieved by directly touching the penile shaft. The second is the psychogenic erection, which is achieved by erotic or emotional stimuli. The former uses the peripheral nerves and the lower parts of the spinal cord, whereas the latter uses the limbic system of the brain. In both conditions, an intact neural system is required for a successful and complete erection. Stimulation of penile shaft by the nervous system leads to the secretion of nitric oxide (NO), which causes the relaxation of smooth muscles of corpora cavernosa (the main erectile tissue of penis), and subsequently penile erection. Additionally, adequate levels of testosterone (produced by the testes) and an intact pituitary gland are required for the development of a healthy erectile system. As can be understood from the mechanisms of a normal erection, impotence may develop due to hormonal deficiency, disorders of the neural system, lack of adequate penile blood supply or psychological problems. Restriction of blood flow can arise from impaired endothelial function due to the usual causes associated with coronary artery disease, but can also be caused by prolonged exposure to bright light.

Intimate Part

An intimate, personal, or private part is a place on the human body which it is usually customary to keep covered with clothing in public areas, as a matter of decency. The term is a euphemism.

Definitions vary, but in Western cultures they are primarily the parts involved in sexual arousal, procreation, and elimination of excreta and related matter, including:

the buttocks, anus and perineum

for boys and men: the penis and scrotum

for girls and women: the pudendal cleft, vulva and, the breasts

The term intimate parts may be construed to mean only the external body parts that are visible when naked, rather than the body parts more commonly referred to. For example, when naked, a woman's pudendal cleft is predominantly visible rather than the vagina, and a man's scrotum is visible rather than the testes which are contained within.

Female breasts are considered as parts that would be covered in most contexts, but with a degree of tolerance for toplessness varying in different regions and cultures. For example, Fischtein, Herold and Desmarais 2005 found that of a sample of 1,479 Canadians, 72.4% felt that toplessness on city streets should be illegal, but in public parks only 62.1% felt it should be illegal and on public beaches only 48.1% felt that it should be illegal. The results for toplessness on city streets varied by gender, with significantly more women responding that it should be illegal than men; by age, with those aged 40–49 least likely 67.5% to think it should be illegal and those aged 20–29 most likely 79.9%; and by religious commitment, with those attending church at least weekly most likely 85.1% to think it should be illegal and those never attending least likely 57.7%. The differences became less significant for toplessness in public parks and even less so for toplessness on public beaches. The study highlighted the range of attitudes towards public nudity.

In some periods of European history, female shoulders and legs may have been considered intimate parts. More conservative viewpoints in the West in some contexts still find it appropriate that females should cover their shoulders, particularly when entering a church or other sacred space.

In Islamic traditions, the definition of awrah is similar to the definition of intimate parts in Western culture. The extent of cover for the female body depends upon the situation, but may include the hair, shoulders and neck in addition to the aforementioned intimate parts. The entire body except the face and hands should be covered in public or in front of unrelated men. The Hanafi school of thought, which is followed by most Muslims in the world, agree that the feet are not part of the awrah and therefore may be revealed.

Exposure of one's intimate parts, particularly unintended exposure, is typically connected with feelings of shame. Such exposure may be subject to strict social rules, social control and criminal justice; see indecent exposure.

Intentionally touching the intimate parts of another person, even through clothing, is often associated with sexual intent. If this is done without legally valid consent of the person being touched, it may be considered sexual harassment or sexual assault.

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Acting schools

Acting schools are what separate good actors from not so good actors. To be the best actor you can be you need the proper school. Go to acting schools to find the right program for you. Most acting schools, depending on the discipline, will cover beginning as well as advanced classes. Many schools will also hold classes throughout the day and night to accommodate the various schedules of its students. Prior to attending any school, actors sometimes audit certain classes (if the school offers this option) to see if they would benefit from the training. Acting schools are commonly defined as places designated for learning the craft of acting.

Learn acting through intensive summer camps and greatly improve your acting ability. Visit summer camps to find the nearest camp in your area. Many summer camps offer students the opportunity to write, direct and perform in their own projects. This not only helps a student improve his/her acting ability, it also offers a more comprehensive understanding of overall productions.

Nipple Erection

The erection of nipples is not due to erectile tissue, but due to the contraction of smooth muscle under the control of the autonomic nervous system. It is more akin to a hair follicle standing on end than to a sexual erection. Nipple erections are a product of the pilomotor reflex which causes goose bumps. The erection of the nipple is partially due to the cylindrically-arranged muscle cells found within it.

Nipple erection can also be caused by a tactile response to cold temperature in both males and females. Nipple erection may also result during sexual arousal in females and males, or during breastfeeding. Both are caused by the release of oxytocin.

Nipples of both males and females are one of the erogenous zones, which are generally stimulated by hands or by mouth during foreplay, which leads to sexual arousal. Female nipples are more sensitive, due to more nerve supply and endings. During arousal they generally become stiff, erect and protrude out.

The nipple and areola of males and females can be erotic receptors, sometimes intense enough to elicit orgasm in some individuals of either sex.