Thyroid hormone

produces several important hormones that control body functions such as growth, development, reproduction, and metabolism. One of these hormones is growth Hormone (GH). In childhood, GH is important for proper development and growth. In adults GH maintains healthy bone and muscle function. If there is not enough growth hormone, a child will not grow to his potential stature. If there is too much growth hormone a child will grow excessively tall. If there is an excess of growth hormone in an…

role to the nervous system to keep the body in a state of homeostasis. Through the use of a negative feedback loop the Endocrine system insures the proper amount of hormone is in the body at any given time. These hormones serve functions from growth to balancing ion levels in the body. The Endocrine system is specifically down to the hormone meant for homeostasis. The Endocrine System is a sort of chemical messenger. One which, due to its role in homeostasis, often interacts with other…

Some of these glands produce up to 2 secretions (Hormones) but mostly each gland will have the task of producing one. These glands are ductless, which is why they secrete directly into the blood. This is a list of the glands which are a part of this system; Pineal, Pituitary, thyroid, parathyroid, adrenal and parts of the pancreas, ovaries and testes. Digestive system - The digestion system has two parts to it, the…

used voles as subjects, because of their distinct social behavior. They showed that prairie vole pups, which are part of monogamous species, react to social isolation with ultrasonic calls as well as an increase in corticosterone level, which is a hormone involved in stress responses. On the other hand, montane vole pups, which are promiscuous species, did not respond to social isolation as a stressor, but on the contrary did produce ultrasonic calls and presented a rise in corticosterone in…

According to WHO (World Health Organization) adolescence is the period that happens between the ages of 10 to 19 in which human growth and development occurs. Throughout the life span, adolescence signifies an important transition from childhood, as it is a period of ‘newness’ and change, which can be seen in the person, the dyad and the environment’. Linda P Spear supports this as she defines adolescence as ‘a period of physical, psychological and social transition between childhood and…

The stages of human life Every human being born, grows, matures, grows old and dies. These stages are a process of continuous physical, psychological and intellectual changes. It is an irreversible and permanent evolution of changes, our body has stages of growth, maturation and degeneration. The stage of Infancy or childhood is an important stage of development, in which many skills, such as speaking, reading and understanding acquired ideas. During this period children become more precise in…

electrical signal is triggered the nerve cell will secrete a chemical, the neurotransmitter, which will diffuse across the synapse. The synapse is a compact space between the target cell and the nerve cell. Hormonal Signaling Endocrine cells secrete hormones into the blood vessel, which then send them to target cells. For any cell signaling and response to happen, a specific cell must send a molecule to a target cell. Stages of Cell Signaling Cell signaling is split into three different stages…

exhibit sex differences. For example, a higher proportion of somatotrope cells respond to growth hormone releasing hormone (GHRH) in males than in females (71). It is possible that something similar may be happening with the gonadotrope population due to expression of ICAM5. Also, cell networks can be regulated by hormonal mechanisms because gonadectomy alters the responsiveness of cells to GHRH, including hormone release and cell motility (71, 72). In gonadotropes, GnRH treatment leads to an…

Endocrine disruptors is the given name for a group of chemicals that, at certain doses, can interfere with the hormone system within mammals as well as fish and amphibians. They can be naturally occurring chemicals e.g. Arsenic, or manmade chemicals e.g. hormonally active substances excreted by humans using certain pharmaceutical products, as well as a number of chemicals derived from everyday cosmetics, plastics and personal care products. These disruptors can lead to a variety of debilating…

not the benefits that using certain compounds affords us is worth the damage they can potentially cause is the basis for the ongoing controversy. Endocrine disruptors have the ability to act like hormones already present in the body and can therefore result in overstimulation. They can also block hormones from properly binding and effect how they are produced and maintained. Many problems exist but not many solutions. It is difficult to ban chemicals that are also relied upon for massive…