The erection mechanism of the penis in most vertebrates is blood vascular. A major evolutionary transition occurred in birds, where the erection mechanism changed from blood vascular to lymphatic. Within birds, however, the erection mechanism of the ratite penis has remained unknown. Early work suggested that the erection mechanism in ostrich Struthio camelus was blood vascular while no descrip...

There is a tremendous housing shortage in the world that can only be overcome by innovative designs and enlightened production management. This paper presents a method for fast erection of apartment housing units that have architectural flexibility, manufacturing flexibility, and erection flexibility. The paper describes innovative jointing methods for large panel erection and presents characte...

Objective: Total of 1,896 cases of drugs combined with audio-visual stimulation induced penile erection hardness monitoring were summarized, the results of cases with no correlation accompaniment diseases and associated with diseases were compared. Methods: Total of 1,896 cases Rigiscan exam were underwent in our center, the patients were aged 18-72 years old (average 41.3 years), courses of di...

How to understand the erectile function? How to define erectile dysfunction? In general, erectile function is evaluated by the quality of penile erection. If penis shows good erection, we think erectile function is normal. Otherwise, erectile dysfunction occurs. This concept is reflected in the definition of erectile dysfunction (ED). ED is defined as the persistent inability to attain and main...

How to understand the erectile function? How to define erectile dysfunction? In general, erectile function is evaluated by the quality of penile erection. If penis shows good erection, we think erectile function is normal. Otherwise, erectile dysfunction occurs. This concept is reflected in the definition of erectile dysfunction (ED). ED is defined as the persistent inability to attain and main...

The control of sexual function is made by central nervous system like many body functions. Normal hypothalamicpituitary-gonadal axis are needed for erection health. Autonomic and somatic nervous system are in charge of the erection except the central nervous system. These nerves are responsible in achieving erection by stimulation of the bulbocavernosus and iskiocavernosus muscle [1]. Somatic n...

Background: Vajikarana herbs from Ayurveda are known to enhance the sexual performance in folklore. The objective is to evaluate their effect by molecular and pharmacological screening. Materials and Methods: In the present study, the effect of four Vajikaran Rasayana herbs on penile erection, sperm count, seminal fructose content in vivo and nitric oxide (NO) release in vitro was assessed. Pen...

BACKGROUND To assess prevalence of condom-associated erection loss and to identify correlates of erection loss among men attending a sexually transmissible infections (STI) clinic. METHODS Men (n = 278) attending an STI clinic responded to an anonymous questionnaire aided by a CD recording of the questions. The sample was screened to include only men who had used a condom during penile-vagina...

INTRODUCTION Spontaneous erection accompanied by an activity thought to be and referred to as masturbation occurs in stallions. Spontaneous erection involves extension of the penis from the prepuce with engorgement to its full length and rigidity, in a solitary, rather than heterosexual, context. The activity known as masturbation involves rhythmic bouncing, pressing, or sliding of the erect pe...

BACKGROUND The extent of genetic influence on erectile dysfunction (ED) is unknown. This study determines the contribution of heredity to ED in a sample of middle-aged men. METHODS A classical twin study was conducted in the Vietnam Era Twin Registry, a national sample of male-male pairs (mean birth year, 1949) who served on active duty during the Vietnam era (1965-1975). A 1999 male health s...