Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Steroid and Thyroid Hormones
Cytoplasmic receptors for steroids are proteins with two subunits that bind to the steroid molecules. When both receptor sites are occupied by the steroid then the receptor-steroid complex migrates to the nucleus where one subunit ensures that the complex binds to the specific site on the chromatin. Then the receptor subunits separate and the other subunit interact directly with the adjacent region of DNA molecule resulting in the transcription of the DNA segment into mRNA.
Thyroid hormone acts in a similar manner except that the receptor is located in the nucleus. The major hormone secreted by thyroid is thyroxine (T4). It travels in blood attached to carrier proteins. Thyroid also secretes a small amount of triiodothyronine (T3). Carrier proteins have higher affinity for T4 and very little T4 is free in the plasma. Only the free T4 and T3 enter the cells. The rest of the bound T4 acts as a reservoir for slow release. The free T4 that enters the cell s also converted to T3 enzymatically. Therefore, T3 is the chemically more potent and active form of thyroid hormone.
Figure:Steroid and Thyroid Hormones
The reproductive system of house fly: In houseflies seperate male and female organisms are present. Male housefly reproductive system. The male hothe reproductive syste
Limitations of Ecological Pyramids The pyramid of energy is a significant improvement over the previous two types of ecological pyramids, yet all of them overlook one or anot
How dietary constituents affecting the calcium absorption? Several dietary constituents have an effect on calcium absorption. The differences in fractional absorption from diff
Q. How do antibody-based tests detect how HIV infection works? Subsequent to the infection by the HIV the immune system begins the production of antibodies (primary immune resp
Define cause of vitamin a deficiency - Infections? During acute infections, vitamin A intake in preschool children is reduced due to impaired appetite and impaired vitamin A ab
What is Hyperhomocysteinaemia ? Homocysteine has been considered as a risk factor for Cardio-vascular diseases because of many epidemiological and observational studies showing
Define Dietary and Non Dietary Factors - Causation of Cancer? Several dietary and non-dietary factors (including genetics) can increase the risk in the causation of cancer. Som
PHOBIA S - Common phobias for - Spiders Lizards Snakes Cockroach Crowded places Vast open places Closed small chambers.
Meninges (Singular-Meninx) - Ceverings of brain. By infection in meninges meningitis or brain fever is caused. These menings are internally lined by squamous epitheliu
Role of Private Sector in Health Care - Competition When the private sector is driven by competition it tends to be more efficient. With competition, benefits like cost reduct
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd