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Genitourinary system surgical antomy.pptx

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Genitourinary system surgical antomy.pptx

  1. 1. Tips on using my ppt. 1. You can freely download, edit, modify and put your name etc. 2. Don’t be concerned about number of slides. Half the slides are blanks except for the title. 3. First show the blank slides (eg. Aetiology ) > Ask students what they already know about ethology of today's topic. > Then show next slide which enumerates aetiologies. 4. At the end rerun the show – show blank> ask questions > show next slide. 5. This will be an ACTIVE LEARNING SESSION x three revisions. 6. Good for self study also. 7. See notes for bibliography.
  2. 2. Objectives
  3. 3. Objectives • What do we study in Anatomy
  4. 4. Objectives • Embryology • Parts • Size and Weight • Surfaces • Borders • Relations • Arterial Supply • Venous Drainage • Lymphatic Drainage • Nerve Supply • Attachments/Supports • Surface Marking • Microscopic Anatomy • Applied Anatomy • Physiology • Congenital Anomalies
  5. 5. Parts of Urogenital System •
  6. 6. Parts of Urogenital System • Kidneys • Ureters • Urinary Bladder • Prostate and Seminal Vesicles • Penis and male Urethra • Testis and Scrotum • Vulva and Female Urethra • Uterus and Ovary.
  7. 7. Parts of Urinary tract • Upper Urinary tract- Kidneys and Ureters • Lower urinary tract (bladder, prostate and urethra)
  8. 8. Urinary Tract •
  9. 9. Kidneys
  10. 10. Kidneys • The two kidneys lie retroperitoneally on the posterior abdominal wall. • Anteriorly, the right kidney is covered by the liver, the second part of the duodenum and the ascending colon. • The spleen, stomach, tail of pancreas, left colon and small bowel overlie the left kidney. • The renal hilum lies medially and transmits from front to back the renal vein, renal artery and renal pelvis.
  11. 11. Kidneys • The parenchyma of each kidney usually drains into seven calyces, three upper, two middle and two lower calyces. • Each of the three segments represents an anatomically distinct unit with its own blood supply. • One or more renal arteries are present as physiological end arteries that provide the sole blood supply to the tissue they serve. • The renal veins are commonly multiple, variable and richly anastomotic.
  12. 12. Ureters
  13. 13. Ureters • Stones formed in kidney are painless they produce very severe pain when get stuck in ureter. • It has three anatomic sites of narrowing at which kidney stones typically become lodged: 1. The ureteropelvic junction (UPJ), 2. Pelvic brim 3. Ureterovesical junction (UVJ).
  14. 14. Ureters • In the female, it lies close to the lateral fornix of the vagina and is crossed by the uterine vessels, where it is vulnerable to damage during hysterectomy.
  15. 15. Urinary Bladder
  16. 16. Urinary Bladder • It is lined by transitional epithelium (aka. Urothelium) covering the connective tissue lamina propria, which contains a rich plexus of vessels and lymphatics. • When the detrusor muscle hypertrophies, the inner layer,covered by urothelium, stands out, resulting in the appearance of trabeculation. • Over the trigone is a thin layer of smooth muscle to which the epithelium is closely adherent and which extends as a sheath around the lower ureters and into the proximal urethra.
  17. 17. Urinary Bladder • Around the male bladder neck is the smooth muscle internal sphincter innervated by adrenergic fibres, which prevents retrograde ejaculation. • The distal urethral sphincter is a horseshoe-shaped mass of striated muscle that lies anterior and distal to the prostate, or in the proximal two-thirds of the female urethra. It is distinct from the pelvic floor and is supplied by S2–S4 fibres via the pudendal nerve and by somatic fibres passing through the inferior hypogastric plexus.
  18. 18. Urinary Bladder • At the posterolateral bladder neck, condensations of fascia pass forward medially and laterally to the ureter to join with the prostatic fascia; this fascia needs to be divided during cystectomy. • The puboprostatic ligaments are well- defined condensations of the anterior endopelvic fascia; they stretch from the front of the prostate to the periosteum of the pubis and lie lateral to the dorsal vein complex.
  19. 19. Urinary Bladder • The urachus and obliterated hypogastric arteries, together with the folds of peritoneum overlying them, are called the median and lateral umbilical ligaments. • Condensations of fascia also occur around the superior and inferior vascular pedicles. Arteries • The superior and inferior vesical arteries from the internal iliac artery. • Branches from the obturator and inferior gluteal arteries (and from the uterine and vaginal arteries in females) also supply the bladder.
  20. 20. Urinary Bladder Veins • The veins form a plexus on the lateral and inferior surfaces of the bladder. • In the male, the prostatic plexus is continuous with the vesical plexus, which drains into the internal iliac vein. • In the female, similar large veins are continuous with the vaginal plexus.
  21. 21. Urinary Bladder • Lymphatics • These accompany the veins and drain to nodes along the internal iliac vessels and then to the obturator and external iliac chains.
  22. 22. Urinary Bladder INNERVATION The parasympathetic input • This is derived from the anterior primary divisions of the second, third and fourth sacral segments (mainly S2 and S3). • Fibres pass through the pelvic splanchnic nerves to the inferior hypogastric plexus, from where they are distributed to the bladder. • The pelvic plexus can be damaged during deep pelvic operations.
  23. 23. Urinary Bladder INNERVATION The sympathetic input • This arises in the 11th thoracic to the second lumbar segments. fibres pass via the presacral hypogastric nerve (rather than via the sympathetic chains) to the inferior hypogastric plexus.
  24. 24. Urinary Bladder INNERVATION Somatic innervation • Somatic innervation passes to the distal sphincter mechanism via the pudendal nerves and also via fibres that pass through the inferior hypogastric plexus. • In relationship to the posterolateral aspect of the prostatic capsule and are at risk of damage during radical cystoprostatectomy or radical prostatectomy; inadvertent diathermy in the region of these nerves may be the cause of uncommon erectile impotence after transurethral prostatectomy.
  25. 25. THE MALE URETHRA
  26. 26. THE MALE URETHRA • It has four components which are named (from proximal to distal), 1. Prostatic 2. Membranous 3. Bulbar 4. Penile urethra.
  27. 27. THE MALE URETHRA • The prostatic urethra extends from the bladder neck to the verumontanum an important landmark for urologists performing transurethral resection of the prostate. • The membranous urethra lies just distal to the verumontanum and is located where the urethra penetrates the pelvic floor and it is the usual site of urethral rupture at the time of a pelvic fracture. • It is the primary location of continence as a consequence of the surrounding pelvic floor musculature and external urethral sphincter
  28. 28. THE MALE URETHRA • The bulbar urethra extends from the membranous urethra to the penoscrotal junction and is anteriorly located within the corpus spongiosum. •
  29. 29. THE FEMALE URETHRA
  30. 30. THE FEMALE URETHRA • The female urethra is around 2–3 cm long, extending from the bladder neck to the external urethral meatus. • Continence is maintained by the external striated urethral sphincter, which in women extends for almost the whole length of the urethra. • There is extra support from the surrounding pelvic floor musculature. • In contrast to men, the female bladder neck has little role in the maintenance of continence.
  31. 31. Colles’fascia •
  32. 32. Colles’fascia • Aka The membranous layer of the superficial fascia of perineum. • Continues as Scarpa’’s fascia in abdomen • In bulbar urethral injury Extravasation of urine is common if the urine is not diverted and the extravasated urine is confined in front of the mid-perineal point and collects in the scrotum and penis and beneath the deep layer of superficial fascia in the abdominal wall. • Extravasated urine is confined in front of the mid-perineal point by the attachment of Colles’ fascia to the triangular ligament and by the attachment of Scarpa’s fascia just below the inguinal ligament. The external spermatic fascia stops it getting into the inguinal canals.
  33. 33. Penis •
  34. 34. Penis •
  35. 35. Male reproductive system
  36. 36. Penis • The penis is composed of three tubular structures. The Dors altwo structures, which are apposed to each other, are called the corpora cavernosa and are anchored posteriorly onto the pubic rami. • They provide the erectile function. • The third tubular structure is the corpus spongiosum, which contains the urethra and it expands distally to form the glans penis. • The corpora cavernosa have an outer covering of tunica albuginea which is relatively inelastic and which also forms the septum between them. • The central arterial blood supply (the central penile artery) is a branch of the internal pudendal
  37. 37. Testis & Epididymis
  38. 38. Testis & Epididymis • The anatomy of the adult testis reflects its embryonic development. • The testicular arteries originate high up in the retroperitoneum from the abdominal aorta, just below the renal arteries. • The testicular veins drain into the renal vein on the left and the inferior vena cava on the right. • The epididymis lies on the posterior aspect of the testis and is palpable as a separate structure, with a head, a body and a tail. • The vas curves up behind the testis and can be felt above the testis as a firm tubular structure entering the external inguinal ring.
  39. 39. The prostate and seminal vesicles •
  40. 40. The prostate and seminal vesicles •
  41. 41. The prostate and seminal vesicles •
  42. 42. The prostate and seminal vesicles • Prostate is divided into the peripheral zone (PZ), which lies mainly posteriorly and from which most carcinomas arise, and a central zone (CZ), which lies posterior to the urethral lumen and above the ejaculatory ducts as they pass through the prostate; • There is also a periurethral transitional zone (TZ), from which most benign prostatic hyperplasia (BPH) arises. •
  43. 43. The prostate and seminal vesicles • Smooth muscle cells are found throughout the prostate but, • in the upper part of the prostate and bladder neck, there is a separate sphincter muscle that subserves a sexual function, closing during ejaculation. • Resection of this tissue during prostatectomy is responsible for retrograde ejaculation.
  44. 44. The prostate and seminal vesicles • The seminal glands are a pair of 5cm long tubular glands. They are located between the bladder fundus and the rectum • Their most important anatomical relation is with the vas deferens, which combine with the duct of the seminal vesicles to form the ejaculatory duct, which subsequently drains into the prostatic urethra.
  45. 45. Get this ppt in mobile 1. Download Microsoft PowerPoint from play store. 2. Open Google assistant 3. Open Google lens. 4. Scan qr code from next slide.
  46. 46. Get this ppt in mobile 1. Download Microsoft PowerPoint from play store. 2. Open Google assistant 3. Open Google lens. 4. Scan qr code from next slide.
  47. 47. Get my ppt collection • https://www.slideshare.net/drpradeeppande/ edit_my_uploads • https://www.dropbox.com/sh/x600md3cvj8 5woy/AACVMHuQtvHvl_K8ehc3ltkEa?dl =0 • https://www.facebook.com/doctorpradeeppa nde/?ref=pages_you_manage

Notes de l'éditeur

  • In bulbar urethral injury Extravasation of urine is common if the urine is not
    diverted and the extravasated urine is confined in front of
    the mid-perineal point by the attachment of Colles’ fascia to
    the triangular ligament and by the attachment of Scarpa’s fascia
    just below the inguinal ligament. The external spermatic
    fascia stops it getting into the inguinal canals. Extravasated
    urine collects in the scrotum and penis and beneath the deep
    layer of superficial fascia in the abdominal wall.
  • In bulbar urethral injury Extravasation of urine is common if the urine is not
    diverted and the extravasated urine is confined in front of
    the mid-perineal point by the attachment of Colles’ fascia to
    the triangular ligament and by the attachment of Scarpa’s fascia
    just below the inguinal ligament. The external spermatic
    fascia stops it getting into the inguinal canals. Extravasated
    urine collects in the scrotum and penis and beneath the deep
    layer of superficial fascia in the abdominal wall.
  • The attachment of Colles’ fascia to the triangular ligament and by the attachment of Scarpa’s fascia just below the inguinal ligament. The external spermatic fascia stops it getting into the inguinal canals.
  • The attachment of Colles’ fascia to the triangular ligament and by the attachment of Scarpa’s fascia just below the inguinal ligament. The external spermatic fascia stops it getting into the inguinal canals.
  • drpradeeppande@gmail.com
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