TAILIEUCHUNG - Ebook High-Yield gross anatomy (5th edition): Part 2

(BQ) Part 2 book "High-Yield gross anatomy" presents the following contents: Sigmoid colon, rectum and anal canal; spleen; kidney, ureter, bladder and urethra; suprarenal (adrenal) glands; female reproductive system; male reproductive system, pelvis, perineum, upper limb, lower limb. | CHAPTER 12 Sigmoid Colon Rectum and Anal Canal I Sigmoid Colon Figure 12-1 A. General Features The sigmoid colon is a segment of the large intestine which lies between the descending colon and rectum. The sigmoid colon begins at vertebral level S1 . the sacral promontory or pelvic inlet and ends at vertebral level S3 . the rectosigmoid junction Rectosigmoid junction Anorectal junction perineal flexure 90 Pectinate line Figure 12-1 Sagittal view of the male pelvis. The sigmoid colon SC extends from vertebral level S1 to S3 suspended by the sigmoid mesocolon M and ends at the rectosigmoid junction dotted line . The rectum R and ampulla of the rectum AMP are shown along with the transverse rectal folds TF Houston valves . The rectum ends at the anorectal junction dotted line at the tip of the coccyx where the puborectalis muscle PR maintains a perineal flexure of 90 degrees. The anal canal is divided into the upper anal canal U and lower anal canal L by the pectinate line. TC teniae coli RV rectovesical pouch B urinary bladder T testes PC peritoneal cavity RA rectus abdominis muscle. 129 130 Chapter 12 At the rectosigmoid junction the teniae coli which are longitudinal bands of smooth muscle characteristic of the large intestine spread out to form a circumferentially continuous layer of longitudinal smooth muscle of the rectum and the appendices epiploicae are discontinued. The sigmoid colon is highly variable in both position and shape. Since the segmental contractions in the rectum are more active than in the sigmoid colon fecal mass tends to accumulate in the sigmoid colon. The sigmoid colon is suspended by the sigmoid mesocolon . intraperitoneal . The left ureter and left common iliac artery lie at the apex of the sigmoid mesocolon. B. Arterial Supply The arterial supply of the sigmoid colon is from the sigmoid arteries abdominal aorta inferior mesenteric artery sigmoid arteries . C. Venous Drainage The venous drainage of the sigmoid colon is to the .

• Y khoa - Dược
• High Yield gross anatomy
• Sigmoid colon
• Female reproductive system
• Male reproductive system
• Suprarenal glands
• Bladder and urethra
• báo cáo khoa học
• báo cáo y học
• công trình nghiên cứu về y học
• tài liệu về y học
• cách trình bày báo cáo
• Rare tumors and Tumor Like conditions
• Urological pathology
• Renal tumor
• Tumor like conditions
• Urinary bladder
• Renal pelvis
• Ureter and urethra