A countercurrent system is a system in which the inflow runs parallel to, counter to, and in close proximity to the outflow for some distance. This occurs for both the loops of Henle and the vasa recta in the renal medulla

TLS Online TPP Program

#Id: 1238

#Unit 7. System Physiology – Animal

Corticotropin-releasing hormone (CRH) stimulates secretion of ACTH by corticotropes.

TLS Online TPP Program

#Id: 1239

#Unit 7. System Physiology – Animal

ACTH (corticotropin) controls the secretion of cortisol by the activation of adenylyl cyclase via Galpha s.

TLS Online TPP Program

#Id: 1240

#Unit 7. System Physiology – Animal

The ACTH family is derived from a single precursor, pro-opiomelanocortin (POMC).

TLS Online TPP Program

#Id: 1241

#Unit 7. System Physiology – Animal

Lactotropes -Prolactin (PRL)  promotes mammary gland development and milk production.

TLS Online TPP Program

#Id: 1242

#Unit 7. System Physiology – Animal

GnRH stimulates secretion of FSH and LH by gonadotropes

TLS Online TPP Program

#Id: 1243

#Unit 7. System Physiology – Animal

FSH & LH control growth of the ovaries and testes.