文档介绍：组织胚胎学课件 七年制英文医学班专用
中国医科大学
基础医学院
组胚—英文教学组
Chapter 17 Urinary System
Components
---kidney : produce urine
---ureters
---bladder -ans, conduct, store and
---urethra remove the urine
---functions:
remove waste products of metabolism
regulate the homeostasis
secrete some bioactive factors- renin, erythropoietin
*ans:
mucosa:
/epi-transitional epi
/lamina propria
muscularis: SM
adventitia: CT
2. Kidney
---bean-shaped, 10-12cm in length, 5-6cm in width, 3-4cm in thickness
---hilum: BV, LV, N and ureters enter or out
*renal pelvis: funnel-shaped expension of upper end of ureter
*calyx: branches of renal pelvis
1)   General structure:
---capsule: DCT
---cortex: dark stained
/medullary ray
/cortical labyrinth
---medulla: slight stained
/renal pyramid
/renal columns
/renal papillae:
-minor calyx
-major calyx
-pelvis
*renal lobe: one renal pyramid and its bounding cortical tissue
*renal lobule: renal tissue including one medullary ray and cortical tissue surround it
According to function, renal parenchyma is mainly consists of uriniferous tubules
---parenchyma:
/uriniferous tubules= renal tubule+ collecting tubules
/renal corpuscle =glomerulus + renal capsule(beginning part of renal tubule)
/nephron=renal corpuscle + renal tubule
---interstitium: CT, BV, N
2) Nephron: structural and functional unit, 1,000,000
---renal corpuscle: cortical and juxtamedullary nephron
/renal glomerulus:
/renal capsule
---renal tubule:
/proximal tubule:
-convoluted portion
-straight portion
/thin segment
/distal tubule:
-straight portion
-convoluted portion