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What is the Endocrine System of human body

 What is the

 Endocrine 

System?




The foundation of the endocrine system are the hormones & glands.

Human Body, The physical substance of the human organism, composed of living cells and extracellular materials and organized into tissuesorgans, and systems.

As the body chemical messengers hormones transfer information and instruction from one set of cells today another.

Hormones level can b influenced by factor such as stress, infection and changes in the balance of fluid and minerals in blood.

"Endocrine glands"

A gland is a group of cells that produce and secretes or gives of Chemical.

A gland select the remove material from the blood, process them and secret the finishes chemical product for use somewhere in the body.

On the other hand release more than 20major harmone directly into the blood stream.

"Major glands"

Major glands that makeup the human endocrine system are the :

  • Hypothalamus
  • Pituitary
  • Thyroid
  • Parathyroid
  • Adrenals
  • Pancreas
" Reproductive glands

Which include the overies and testes.

1. Hypothalamus.

The hypothalamus a collection of specialized cells that is located in the lower central part of the brain, is the primary link between the endocrine and nervous system.

2. Pituitary glands.

It's often called the master gland because it makes hormones that control several other endocrine glands.

The tiny pituitary is divided into two parts .

  •  The anterior lob regulate the activity of the thyroid, adrenals and reproduction glands among tha harmone it produce are :
  •  growth hormone.

Which stimulate the growth of bone and other body tissues and plays the role in the body of nutrients and minerals.

  • Prolactin.
Which activities milk production in women who are breast feeding.

  • Thyrotropin.
Which stimulate the thyroid gland to produce thyroid harmone.

  • Corticotropin.
Which stimulate the adrenal gland to produce certain harmones.

In addition the pituitary secrets harmones that signal the overies and taste to make sea harmones.

The pituitary gland also control ovulation and the menstrual cycle in women.

3. Thyroid gland.

The thyroid located in the front part of the lower neck is shaped like butterfly and produces thyroid hormone and triodothyronine .

4. Parathyroid  gland.

Attach to the thyroid are four tiny gland that function together called the parathyroid.

5. Adrenal glands.

  • The body has two triangular adrenal glands one of top of each kidney
  • The adrenal glands have two parts each of which produces a set of hormones and has a different function.
  • The outer part the adrenal cortex, the inner part is medulla.
  • Also called adrenalire epidermis increase blood pressure and heart rate when the body experiences stress.
  •  The harmone control the rate of which cells burn fuel from food to produce energy.
  • As the level of thyroid hormone increases in the blood system so does the speed as which chemical reaction occur in the body.
  • Thyroid hormone also play a key role in bone growth and the development of the brain and narrow system in children.

6. Pancreas.


This produce two important Harmon insulin and glucagon.

They work together to maintain a steady level of glucose or sugar in the blood and to keep the body supplied with fuel to produce maintain stores of energy.

7. Gonads.( For men / women)

  • Are the main source of sex harmones.
  • In males they're located in the surotum 
  • male gonads or test secret harmones called androgen the most important of which is testosterone.
  • These hormones regulate body changes associated with sexual development including enlargment  of the mail organ ( penis ) the appearance of other mail secondary sex charactistics such as depending on the voice growth of facial and public hair and the increase in muscle growth and strength. 
  • The female gonads the overies and located in the pelvis.
  • The produce egg and secret the female hormones estrogen and progesterone.
  • Both estrogen and progesterone are also involved in pregnancy and the regulation of the menstual cycle.








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