kidney
medullary ray contain straight portion
RC=renal corpuscle MR= medullary ray CL=cortical labyrinth
-
uriniferous tubule
- secretory part
- excretory part
-
glomerulus
yellow =urinary pole red=vascular pole
- Tubule
| PCT | Henle’s loop | DT straight portion (TAL) | DCT | Collecting tubule | |
|---|---|---|---|---|---|
| epithelium | Simple cuboidal (pyramidal) | Simple squamous epithelium | Simple cuboidal | ||
| epithelium | Simple cuboidal epithelium | Simple cuboidal epithelium. | |||
| lumen | ไม่เรียบ(microvilli) | เรียบ | เรียบ | เรียบ larger than PCT ( no brush border | เรียบ |
| cell boundaries | ไม่ชัด | ไม่ชัด | ไม่ชัด | ไม่ชัด | ชัดเจน |
| location | straight portion: In medullary ray and medulla | In medulla | In medulla and medullary ray | cortex | In medulla and medullary ray |
PCT
มี basal striation จาก mitochondria
Henle’s loop
DT straight part
DCT
มีnuclues มากว่า PCT มี Basal striation
CT
ไม่ติดสีรอบ nu ,pale cytoplasm
- juxta glomerular apparatus
-
Juxtaglomerular cell
- location at afferent arteriole
- contain renin granule ( hypertension)
- mechanoreceptor
-
macula densa (MD)
- location at distal convoluted tubule (DCT) between afferent and efferent artriole
- chemoreceptor
-
Cell of Polkissen (extraglomerular mesangial cell)
- Spindle-shaped nucleus
- regulate glomerular blood flow and secrete erythropoietin
-
Ureter
- mucosa: transitional epithelium (urothelium), no gland
- mascularis
- adventitia =fibrosa
-
urinary bladder
- คล้าย ureter (transitional epithelium, no gland, muscularis like lower part of ureter, adventitia have many blood vessel)
- adventitia เป็น serosa or fibrosa
-