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endocrine system :))

Endocrine System...

well..this was the first lesson for the third quarter.

The Endocrine System is often called as the “Body’s Other Control System”. It is a series of organs and glands that secrete hormones into our bloodstream.

So speaking of hormones, hormones are chemical messengers released by the endocrine glands. These hormones bind to receiving cells to control the cell activities. There are three sources of hormone levels, the nervous system (neural control), other hormones (hormonal control) and body fluids (humoral control)

The major Endocrine Organs are the Hypothalamus, Pituitary gland, Thyroid gland, Thymus gland, Pineal gland, Pancreas, Adrenal glands, and the Gonads.
The hypothalamus controls pituitary hormone levels. It also secretes a number of hormones like GHRH, GHIH, CRH and other more.The pituitary gland controls other endocrine organs by releasing different types of hormones.The thyroid gland releases thryroxine and triidothyronine that controls cellular metabolism and calcitonin that decreases blood calcium.Pineal gland releases melatonin which is believed to regulate sleep.The pancreas secretes insulin and glucagon that lowers and raises blood sugar respectively.The adrenal glands produces epinephrine and norepinephrine which is responsible for fight-or-flight response. It also produces adrenocorticisteroids which has many different effects.Finally, the gonads (ovaries in females, testes in males) releases estrogen, progesterone and testosterone that controls sexual reproduction and secondary sexual characteristics.

I was the reporter of this particular lesson and I could say that I did a very horrible report. Waaa! I know that my classmates didn’t understand my report and no one passed on the check-up quiz about it! I felt bad about it so suggest that if you are going to report this lesson, visual aids are really needed since the terms are hard to remember easily.

--angel♥

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