If cells that have incorporated a high level of BrdU are exposed to light, they will photolyse; this has been used to selectively kill newly dividing cells.

TLS Online TPP Program

#Id: 1232

#Unit 7. System Physiology – Animal

In the intestine,

1,25-dihydroxycholecalciferol induces the synthesis of calbindin D-28 K which promotes Ca2+ absorption.

TLS Online TPP Program

#Id: 1233

#Unit 7. System Physiology – Animal

1,25-dihydroxycholecalciferol stimulates the reabsorption of calcium & phophate ions from kidney.

TLS Online TPP Program

#Id: 1234

#Unit 7. System Physiology – Animal

In bone, 

1,25-dihydroxycholecalciferol acts synergistically with PTH to stimulate osteoclast activity and bone resorption.

TLS Online TPP Program

#Id: 1235

#Unit 7. System Physiology – Animal

The anterior pituitary secretes six peptide hormones: TSH, FSH, LH, GH, prolactin, & ACTH

TLS Online TPP Program

#Id: 1236

#Unit 7. System Physiology – Animal

Thyrotropin-releasing hormone (TRH) Tripeptide stimulates secretion of TSH by thyrotropes

TLS Online TPP Program

#Id: 1237

#Unit 7. System Physiology – Animal

TSH(thyrotropin)   Controls the secretion rate of thyroxine and triiodothyronine by the thyroid gland.