Here is the HPT axis standing for hypothalamus, pituitary, thyroid axis. Figure 1. Hypothalamic-Pituitary-Thyroid Axis Hypothalamus Pituitary TSH T4 Thyroid Gland T3 Target Tissues Heart T3 Liver Bone CNS Liver, Muscle

Is a hormone altered as a consequence of its interaction with a receptor? Is the receptor altered as a consequence of hormone binding? What are the forces that bind hormone and receptor?

Describe the stimulus for release of the hormone, identify the gland and cells within that gland that produce the hormone, name the target tissue of cells and describe the effect on the target tissue, and indicate whether the hormone is polar or non-polar and how that affects the mechanism of activation for the following hormones:A. Growth hormoneB. Thyroid hormoneC. CortisolD. Insulin and Glucagon

Identify the shortest peptide hormone and explain its function.

Please describe the asian elephant’s endocrine system

Feedback loops regulate the release of hormones in either a positive or negative 上二三一三 I loop. Consider this example: The hypothalamus releases thyrotropin-releasing hormone (TRH), which stimulates the pituitary to release the TSH (thyroid-stimulating hormone). TSH then stimulates thyroid gland to release thyroid hormone. When elevated levels of thyroid hormone are detected by the hypothalamus and pituitary further release of TRH and TSH is suppressed. B. What would happen to the levels of TRH and TSH if a tumor of the thyroid gland were discovered resulting in uncontrolled release of the thyroid hormone from the tumor itself?

“Since endocrine systems are the components of homeostatic feedback loop, co-ordination can be evident in hormone secretion” – explain this statement with an example.

List two or three factors that make it advantageous for peptide hormonesto be synthesized as inactive prohormones that are activated by proteolyticcleavage.

Describe why negative and positive feedback loops exist in the endocrine system.

A new hormone is discovered that binds to receptors on the target cell surface. Describe the chemical class of hormone that this hormone could belong to and explain how you could discern the exact class.   (