1. OFFSPRING NUMBER VERSUS OFFSPRING SIZE

2. OFFSPRING NUMBER VERSUS PARENTAL CARE

3. FECUNDITY AND PARENTAL CARE VERSUS PARENTAL SURVIVAL

TLS Online TPP Program

#Id: 5797

#Unit 7. System Physiology – Animal

Iodinated Tyrosines (MIT and DIT) are deiodinated by a microsomal iodotyrosine deiodinase, to recover iodine and bound tyrosines and recycle them for additional rounds of hormone synthesis.

TLS Online TPP Program

#Id: 5798

#Unit 7. System Physiology – Animal

The thyroid hormone receptor usually forms a heterodimer with retinoid X receptor (RXR) at specific thyroid hormone response elements on the DNA

TLS Online TPP Program

#Id: 5799

#Unit 7. System Physiology – Animal

TLS Online TPP Program

#Id: 5800

#Unit 7. System Physiology – Animal

Thyrotropin-releasing hormone (TRH) Tripeptide (amide—pyroglutamyl-histidylproline-amide) Stimulates secretion of TSH by thyrotropes

TLS Online TPP Program

#Id: 5801

#Unit 7. System Physiology – Animal

TRH receptors in the pituitary cell membrane activates the phospholipase second messenger system, leads to TSH release.

TLS Online TPP Program

#Id: 5802

#Unit 7. System Physiology – Animal

TSH(thyrotropin)

Increased proteolysis of the thyroglobulin Increased activity of the iodide pump Increased iodination of tyrosine

Increased size and increased secretory activity of the thyroid cells

Increased number of thyroid cells