The optic vesicle is able to induce lens formation in the anterior ectoderm but not in the presumptive trunk and abdomen.

TLS Online TPP Program

#Id: 1268

#Unit 7. System Physiology – Animal

The synthesis and secretion of steroid hormones by the adrenal cortex depend on the stimulation of cholesterol desmolase by ACTH.

TLS Online TPP Program

#Id: 1269

#Unit 7. System Physiology – Animal

The zona fasciculata/reticularis, is under the exclusive control of the hypothalamic-pituitary axis.

TLS Online TPP Program

#Id: 1270

#Unit 7. System Physiology – Animal

Negative feedback is exerted by cortisol in the hypothalamic-pituitary axis.

TLS Online TPP Program

#Id: 1271

#Unit 7. System Physiology – Animal

The zona glomerulosa is controlled via; Renin-angiotensin-aldosterone system. 

TLS Online TPP Program

#Id: 1272

#Unit 7. System Physiology – Animal

Aldosterone has three actions on the late distal tubule and collecting ducts of the kidney: 

Increases Na+ reabsorption

Increases K+ secretion

Increases H+ secretion

TLS Online TPP Program

#Id: 1273

#Unit 7. System Physiology – Animal

ACTH stimulates the synthesis and secretion of cortisol by the activation of adenylyl cyclase via Gs.