Anatomy of the male reproductive system PDF

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Anatomy of the male reproductive system...

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Anatomy of the male reproductive system. Components: Deferential conduit Testicular artery (Abdominal aorta branch) Artery of the deferential duct (Lower bladder artery branch) Cremasteric artery (Lower epigastric artery) Pampiniform Venous Plexus (Testicular Veins) Sympathetic fibers (along with parasympathetic through the deferential duct) The genital branch of the genitofemoral nerve (Musculo cremaster) Lumbar lynononoins. Scrotum: Skin sac formed by the skin and fascia of the dartos muscle and next to it a layer of smooth muscle (Muscle dartos) that is inserted into the skin and causes it to wrinkle with the cold. It is divided into two cavities by the scrotal septum inside and out by the scrotal rafe (Rest of the fusion of the scrotal lip tumefactions). The surface fascia dartos is continued by the anterior with the membranous layer of the subcutaneous tissue (Fascia de Scarpa, which comes from the anterolateral wall of the abdomen) and at the back, with the subcutaneous tissue of the perineum (Fascia de Colles, which is an extension of the layer membranous of the perineum's subcutaneous tissue). ARTERIAL IRRIGATION: Article. Posterior scrotals Perineal branch of the inner artery Article. Previous scrotals External branches of the femoral artery Cremastric branch of the lower epigastric artery VENOUS DRAINAGE: (It's the same as arteries) Scrotal veins Lymphatic: Surface inguinal lymphnodes Innervation: -Anterolateral Genital branch of the genitophageal nerve (L1-L2) -Previous Anterior Scrotal Nerves (N. ilioinguinal) -Rear Posterior Scrotal Nerves (Perineal ram of the perineal nerve pudendo (S2-S4)) -Lower perineal palms of the posterior femoral skin nerve (S2-S3)

Epididymis: It is formed by the intense and tiny contortions of the epididymis duct. It is located on the back side of the testicle and is covered by the vaginal tunic, except on its posterior edge. The size of the tubules decreases from the head to the tail. In this last portion it is called a deferential conduit. The straight semi-noifts Rete thesis Conductillos Ephendians Epididymis. Innervation: N. Autonomous Testicular Plexus F. parasympathetic vágales F. sympathetic (Segment T7). Deferential conduit: Its path is as follows: Tail of the epididymism spermatic cording Inguinal conduit crosses the outer iliac vessels and enters the pelvis It passes through the side wall of the pelvis (Placing outside the parietal peritoneum) It attaches to the duct of the seminal vesicles to form the ejaculator duct. (No structure is placed between the deferential duct and the peritoneum during its journey.) This duct passes by crossing over the ureter (near the posterolateral angle of the bladder) and runs between the bladder and the peritoneum until it reaches the bottom of the bladder. Behind the bladder, the deferential duct is positioned above the seminal and then medial vesicles to the bladder and the ureter, in this part widens to form the blister of the deferential duct, then narrows and attaches to the prostate duct, forming the duct, forming the duct eyaculator. ARTERIAL IRRIGATION: A. of the deferential duct (Born of the lower bladder artery and anastomose with the testicular artery behind the testicle. VENOUS DRAINAGE: The veins accompany the arteries and have the same names. LYMPHATIC DRAINAGE: External iliac lynodes. Innervation: Lower hypogastric plexus bouquets (It has a rich autonomous inervation that facilitates the rapid contraction required to expel sperm during ejaculation). Seminal veins: They are elongated structures of 5cm in length that lie between the bottom of the bladder and the rectum. They are on the prostate and their function is to secrete a thick alkaline fluid that is mixed with sperm. Its upper ends are located behind the ureters and peritoneal upholstery (there the peritoneum of the straight bladder bag separates them from the rectum). Its lower

ends are related to the rectum, separated only by the bladder straight septum. The seminal vesicle duct is joined at the point where the deferential duct is renamed an ejaculator duct. ARTERIAL IRRIGATION: Branches of the lower bladder a. and the middle rectal a. VENOUS DRAINAGE: Veins accompany the arteries of the same name. LYMPHATIC DRAINAGE: Internal iliac lynodes. Innervation: It has a plexus of nerve fibers and some sympathetic nodes. Sympathetic presynaptic fibers pass through the upper lumbar and hypogastric nerves and parasympathetic fibers, the splhate nerves of the pelvis to reach the lower hypogastric or pelvic plexus. Ejculating conduits: They're tubes of +- 2.5cm. length that arise by the junction of a seminal vesicle with the deferential duct. They originate at bladder neck height and pass very close to the prostate and prostate sides and converge to join in the seminal colbladder through small slits or into the utricle hole. ARTERIAL IRRIGATION: Arteries of the deferential ducts. VENOUS DRAINAGE: Prostate and bladder venous plexes. LYMPHATIC DRAINAGE: External iliac ganglia. Innervation: Lower hypogastric plexus. Prostate: It is a gland approx. 3cm in length. It consists of a glandular portion (2/3) and a fibromuscular (1/3). It surrounds the prostate urethra and has a dense fibrous capsule externally wrapped by a fibrous prostate sheath that continues with puboprostate ligaments. It also has: A base that is related to the bladder neck. A vertex that is in contact with the fascia of the upper face of the urethral sphincter and with the deep perineal muscles. An anterior muscle face that is mostly composed of transverse muscle fibers that continues inside with the urethral sphincter and is separated from pubic symphysis by fat from the retropubic space.

A posterior face related to the blister of the rectum. Intermingle faces related to the lifting muscle of the anus. You have to add the described lobes that are described: Anterior lobe or isthmus, which is in front of the urethra, is fibromuscular and muscle fibers continue with those of the urethral sphincter. Rear lobe, which is located behind the urethra and under the ejaculating ducts. Side lobes, on each side of the urethra (larger portion). Medium lobe that sits between the urethra and ejculculculating ducts and is related to the bladder neck. *It can also be divided into peripheral and central (Medium) lobes. The prostate ducts (20-30) open to the prostate breasts located on either side of the seminal colletal on the posterior wall of the prostate urethra. Seminal fluid contributes about 20% to sperm. ARTERIAL IRRIGATION: A. prostate A. internal iliac, of the lower bladders and to a lesser extent the cannda and middle rectal. VENOUS DRAINAGE: Xae venous prostate Veins internal iliac. Cephalic continues with the bladder plexus, and later with the inner vertebral plexus. LYMPHATIC DRAINAGE: Internal and sacred iliac ganglia. Innervation: Parasympathetic Pelvic Splhate Nerves (S2-S4) Sympathetic Lower hypogastric plexus. Bulbrel glands: They are two glands, similar in size to a pea, that are located posterolaterally to the membranous portion of the urethra. The ducts of these glands pass through the lower fascia of the sphincter muscle of the urethra (perineal membrane), along with the urethra and flow into the proximal part of the spongy urethra in the penis bulb. The secretions pass through the urethra during sexual arousal. Penis: It consists of a root, body and glans. It has 2 cavernous bodies of erectile tissue and the spongy body, surrounded by the albugina robe. Superficial to this is the deep fascia of the penis (De Buck) which is an extension of the deep perineal fascia. The fluffy body contains the fluffy urethra. The cavernous bodies join together in their middle plane to separate back and thus form the pillars of the penis.

The root of the penis consists of: The pillars (Each of these masses of erectile tissue is inserted into the lower portion of the inner face of the corresponding ischial branch ahead of the ischiatic tuberosity). The bulb (The thickened posterior portion of the penis bulb is crossed by the membranous or middle portion of the urethra). Ischiocavernous muscle Bulbous muscle It is found in the superficial perineal pouch between the perineal membrane above and the perineal fascia below. The body of the penis is the free part in a flaccid state. Composed of fine skin, connective tissue, vessels, fascia, cavernous bodies and the fluffy body. With the exception of the bulbospongous fibers near the root and those of the ischiocavernoso hugging the pillars, it lacks muscles. The spongy body expands in the distal area to form the glans of the penis, which has a fold that is the crown of the glans, which covers a constriction area with an oblique groove (The neck) and the urinary meate is located near the tip. The suspensory ligament of the penis: It is a condensation of the deep fascia that goes from the pubic symphysis, passes underneath and staples, inserting itself into the deep fascia where root and body meet. The frond ligament of the penis: It is a subcutaneous elastic band that originates in the dawn line (on the symphysis of the pubis) and divides to surround the penis before inserting into the fascia of the penis. ARTERIAL IRRIGATION: The dorsal arteries that pass through the line that longitudinally joins the cavernous bodies, supply fibrous tissue and the skin. Deep arteries pierce the pillars and travel within the cavernous bodies to nourish erectile tissue. The artery in the penis bulb irrigates the posterior portion of the cavernous body and the bulbouretral glands. The branches of the outer arterias irrigate the skin and are anastomose with the outer canes. Deep arteries (helicin arteries due to their winding when the penis is flaccid), are the main vessels of the cavernous bodies and contribute to erection. VENOUS DRAINAGE: Venous plexus V. deep dorsal of the penis (Deep fascia) passes through the arched ligament of the pubis and flows into the prostate venous plexus. The blood from the surface parts drains to the surface V. surface dorsal V. surface external can? or the side of it.

LYMPHATIC DRAINAGE: Surface inguinal gangs. Innervation: Segments S2-S4 nerve perandandandandanda and pelvic plexus. The dorsal nerve of the penis, which is a terminal branch of the canand, is born in the duct and runs forward reaching the deep perineal pouch, later to the back of the penis passing to the side of the art. dorsal. Inert the skin and glans. Rhes of the ilioinguinal nerve inert the skin of the region....