The female gonad and its hormones

Basically gonad is a reproductive organ which is classified into two, the male gonad or the testes and the female gonad, the ovary. In this post we will discuss about the female gonad, the reproductive gland of the female body.



The female gonad or more well known as the ovary is found on the pelvis of the female body. This oval shaped ovaries on each side of the body produces eggs alternately every month, which are needed along with the sperm cells from the male gonad in order to produce an offspring.


It doesn't only acts as reservoir of the egg cells but it also secretes hormones which are very important for normal functioning of the body, development of the female body and it also plays an important role during pregnancy.

The ovary produces two hormones, namely progesterone and estrogen. This hormones are classified as steroid hormones and are further subdivided into mineralocorticoids, glucocorticoids and sex steroids. The hormones produced from the ovary are classified under sex steroids.

Progesterone

Progesterone's main function is to prepare the placenta for the implantation of the ovum during fertilization and it also stimulates the development of the mammary gland. It is produced in low amounts during the start of the menstruation but peaks at the middle and then returns to normal after menstruation ends.

To learn more about progesterone watch this video...


uploaded by beautyisnteverything

for the structure of progesterone click here

Estrogens

There are three major estrogens, namely estradiol, estriol and estrone

Estradiol - helps in the regulation of the menstrual cycle. It also assist in the regulation of FSH and LH in the anterior pituitary.

Estrone and Estriol - these two estrogens are present in normal non pregnant women but the latter rises in pregnancy.

To learn more about estrogen watch this video...


uploaded by iHealthTube

for the structure of estrogen click here

photo credits:

http://www.flickr.com/photos/25221954@N04/3534396870/

http://www.flickr.com/photos/d_o_a/2760488805/

http://www.fl
ickr.com/photos/25221954@N04/3615100325/

http://www.flickr.com/photos/helenmakes/4005148060/

http://www.medgear.org/entry/nano-sized-drug-capsule-to-cure-ovarian-cancer

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Endocrinology, Toxicology and Drug Testing


Endocrinology... from the word itself you can already grasp what the word means. Endocrine and logy-- logy which means to study and endocrine which is an organ system in our body. I thought this subject would focus on our endocrine system and true to my thoughts after reading from books and of course the ever so easy to access, the internet!

I came to learn that Endocrinology focuses on the hormones that the endocrine glands produces. These hormones which are very important so that our body would function normally, such as metabolism and reproduction.

The Endocrine system is composed of glands that are located in our body and these glands are...




  • Pineal gland
  • Pituitary gland
  • Thyroid gland
  • Thymus
  • Adrenal gland
  • Pancreas
  • The gonads



Toxicology... Have you ever experienced accidentally touching a chemical inside the laboratory? or accidentally splashing some chemicals??? those people especially students in the medical field does this incidents sounds familiar? yep me too I already experienced freaking out and being paranoid thinking what would happen...
When I first saw toxicology from my registration form I thought wow! interesting.

Eventually after reading the definition of toxicology from different sources I learned that this subject studies the effect of different chemicals into our body. How does this poisonous chemicals interact inside the living creatures body.

Personally I think studying toxicology would help us medical technologies to be more careful from handling these chemicals because we already know the effects it will cause to us.




http://www.legaljuice.com/drugs.jpg

Drug Testing...from what I know drug testing is a test that is performed to detect the presence of a certain drug in the urine. But after reading the definition of this test from different sources I came to learn that drug testing can also be performed using different specimens like sweat or hair

But because of the cost of these tests the most common biological specimen used is the urine, that's why it is the most famous among the other tests.

Different drugs have different approximate values of detection. For example heroin, it can only be detected in urine after 3-4 days. For reference of different approximate time of detection of each drug go to http://www.meditest.org/approx.html






By: Princess
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