What is glands, Biology

Assignment Help:

What is Glands?

The central nervous system controls much of the endocrine system through the hypothalamus. The hypothalamus directs many of the body's functions through the "master endocrine gland," the pituitary gland, which in turn is able to control other endocrine glands by secreting hormones such as GH (growth hormone) and TH (thyroid-stimulating hormone). The pituitary also secretes LH (luteinizing hormone) and FSH(follicle stimulating hormone), which affect the follicles and ovaries throughout the menstrual cycle. The thyroid stimulates metabolism, and regulates blood calcium and phosphate levels, along with the parathyroid glands. The adrenal glands, located by the kidneys, secrete epinephrine (adrenaline) and norepinephrine in response to threat or danger, regulate body fluid levels, control gluconeogenesis (glucose and glycogen synthesis) in the liver, and produce sex hormones.

Insulin is a well-known hormone that is produced by the cells named Islets of Langerhans in the pancreas. Insulin triggers the absorption of glucose by cells from the bloodstream. If there is a lack of enough insulin being produced, or if there is a low number of insulin receptors, the disease known as diabetes. Another hormone produced in the pancreas is glucagon. Glucagon is a hormone that signals the liver to release stored glucose whenever the glucose, or blood sugar, levels get too low.

The gonads are the sex organs. The ovaries in females secrete estrogen and progesterone, and the testes in males produce testosterone. They are discussed further in the section on the reproductive system. The pineal and thymus glands are secondary endocrine glands, respectively producing melatonin and thymosin.

 


Related Discussions:- What is glands

Define solubility affecting absorption of dietary iron, Define Solubility a...

Define Solubility affecting absorption of dietary iron? Solubility is crucial for non-haem iron absorption as the inorganic iron salts have to be solubilized in the intestine f

What is archaebacteria, What is Archaebacteria ? Archaebacteria is a re...

What is Archaebacteria ? Archaebacteria is a relatively new grouping that was created in the light of relatively recent biochemical and electron microscopic evidence. These fin

Evolutionary novelty presented by annelids, Q. What is the major evolutiona...

Q. What is the major evolutionary novelty presented by annelids? The main evolutionary novelty presented by the beings of the phylum Annelida is the coelom, the internal body c

Diffusion resemblance with enzymatic chemical reactions, Q. How does facili...

Q. How does facilitated diffusion present resemblance with enzymatic chemical reactions? One of the main examples of facilitated transport is the entry of glucose from the bloo

Dreams, what do our brain and heart do when we are asleep?

what do our brain and heart do when we are asleep?

Open water zone - lake ecosystem, Open Water Zone - Lake Ecosystem Thi...

Open Water Zone - Lake Ecosystem This extends beyond the littoral zone and is too deep for light to penetrate till the bottom and for rooted plants to grow. This zone is divid

Signify the term - trachea, Signify the term - Trachea Part of the resp...

Signify the term - Trachea Part of the respiratory system in insects, vertebrates and some spiders. In invertebrates it comprise tubules carrying air directly from outside to t

Explain about anabolism, Q. Explain about Anabolism? Anabolism is a pro...

Q. Explain about Anabolism? Anabolism is a process of synthesis or making of larger or complex molecules from smaller molecules. The molecules are of different kinds like hormo

What is vacuole , What is Vacuole ? Another structure found only in pla...

What is Vacuole ? Another structure found only in plant cells is the large central vacuole. The vacuole stores enzymes and waste products, in addition to providing the turgor p

What is the main evolutionary novelty presented by annelids, What is the ma...

What is the main evolutionary novelty presented by annelids? The main evolutionary novelty shown by the beings of the phylum Annelida is the coelom, the internal body cavity to

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd