The penis is the external midline urinary and reproductive structure of the male urogenital system. It is derived mainly from branches of the internal pudendal artery. Arises from the genital tubercle from the cranial end of the cloacal membranewhich lengthens to form the phallus male and female.
The penis is the male external excretory and sex organ. The penis contains the external opening of the urethra, which is used for urination and to deliver semen into the vagina of a female sexual partner. Erectile tissue inside the penis allows the penis to increase in size and become rigid during sexual stimulation.
NCBI Bookshelf. David Weech ; John V. Authors David Weech 1 ; John V.
The penis is the male copulatory organ. It is formed from three parts; two Corpora cavernosa, comprising of cavernous tissue and a connective tissue sheath the tunica albuginea, and the single Corpus Spongiosum which contains the urethra encased in a vascular tissue sleeve. There are two types of penis: the musculovascular and fibroelastic penis.
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Penisthe copulatory organ of the male of higher vertebrates that in mammals usually also provides the channel by which urine leaves the body. The corresponding structure in lower invertebrates is often called the cirrus. The human penis is anatomically divided into two continuous areas—the body, or external portion, and the root.
Last week, we discussed the myths and facts about female orgasms. Some questions that have probably crossed your mind might include: Why do boys ejaculate? What do testicles actually do besides sit there? And, are there any parts of a penis that are more sensitive than others?
Operative Urology at the Cleveland Clinic pp Cite as. The bulk of the penis is made up of three erectile bodies: two corpora cavernosa and the single corpus spongiosum Fig. The dorsally located corpora cavernosa contain erectile tissue within a compliant sheath of connective tissue, the tunica albuginea.
In this article, we will look at the functions and structure of the penis and how these give rise to certain clinical conditions. Note: In the anatomical position the penis is erect, so the dorsal side is that closest to the abdomen and the ventral side is closest to the testes. The root and body of the penis are spanned by three masses of erectile tissue. In the root, these tissues are known as the left and right cruraand the bulb of the penis.