7 (756)

Development of Nephroh otanophric

¹    ' tissue caps

Develops under

induetive influence of collecting tubules (mesenchyme expresses a transcription factor_A that makes the tissue competent to respond to induction by uret^Kf^ll^Cl'e^0,u,e<1 bud).

Henles

Each collecting tubiiUP is covered at its distąl end by a metanephric tissue cap.

Langman 14-6

Celi

Nephron

Collecting

tubule

B

vestcle

\

Bowmans

capsule

Distal convoluted tubule

Glomerulus

Glomerulus

Bowmans

capsule

Collecting

tubules

^ProximaK

convołutcd

tubule

capsule

Factors produced by ureteric bud (collecting tubules ) cause mesenchyme to epithelialize. See Fig. 14.7, p. 310

loop

Ascending and

limb ot Henle s loop

Smali renal vesicles are formed which give rise to tubules. Proximal end forms Bowmarrs capsule which receives the glomerulus.