1. Urinary system

2. ③ ① ① ② ③ Fig. 1 Cortex of kidney (HE stain)
① cortical labyrinth ② medullary ray ③glomerulus

3. ② ① ③ ②
Fig 2 Cortex of kidney ①Renal corpuscle : renal glomerulus and capsule
②proximal convoluted tubule ③distal convoluted tubule

4. ② ③ ① Fig. 3 Cortex of kidney(HE stain) ①Renal corpusles
② Proximal convoluted tubule ③ Distal convoluted tubule Macula densa(↑)

5. ② ② ① Fig 4 Cortex of kidney(HE stain)：showing cortical labyrinth
①Arteriole ② Proximal convoluted tubule

6. ① ② Fig 5 Cortex of kidney(HE stain)：showing medullary ray
① proximal straight tubule ② distal straight tubule

7. Fig 6 Medulla of kidney (HE stain,low mag.)

8. ① ② Fig 7 Medulla of kidney (HE stain,high mag.) ③ ③
① distal straight tubule ② proximal straight tubule ③thin limbs

9. Fig 8 Medulla of kidney(HE stain)showing collecting tubule

10. ① ② ③ Fig 9 Urinary bladder(HE stain,low mag.)
①transitional epithelium ②lamina propria ③muscularis