BLG 10A/B Study Guide - Final Guide: Endocrine System, Transitional Epithelium, Stretch Reflex
9 Apr 2018
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4 in. (10 cm) long and about 2 in. (6. 4 cm) wide indentation on medial surface (= hilum) Blood vessels and nerves enter and exit kidney, ureter leaves kidney. Innervation of kidney: sns, aids in regulation of renal blood flow (by vasoconstriction, stimulates renin release from granular cells (specialized smooth muscle cells, no pns. Nephron= functional unit of kidney (fig 25. 6, 25. 8: > 1 million nephrons per kidney at birth. Cannot regenerate if damaged i. e. number decrease with age. Ultrastructure of the nephron: (fig 25. 6, 25. 8: consists of: renal corpuscle and renal tubule. Renal tubule: hollow tube- single layer of epithelial cells surrounding urine, epithelial features change along tubule (fig 25. 6, has 3 major parts: re(cid:272)ei(cid:448)es fluid fro(cid:373) bo(cid:449)(cid:373)a(cid:374)"s (cid:272)apsule. Distal convoluted tubule (dct: simple cuboidal epithelium, similar functions to pct but less active, also loosely surrounded by peritubular capillary bed (fig 25. 8) two or more dct join to form cortical collecting duct.
