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Hair Loss
...  loss is known as androgenetic alopecia, or male pattern baldness. This is an inherited condition triggered by a sensitivity to a naturally occurring chemical called dihydrotestosterone. The hair follicles stop growing normal hair and instead grow soft, fine, pale hair. Eventually the hair stops growing completely. Hair is usually lost first from the front of the head, especially at the  ...

Alopecia
...  abnormality, the tendency of the misguided immune system is to turn on itself. The immune system then focuses its attention on certain tissues of the body. In the case of alopecia areata, the hair follicles are attacked by the immune system and this leads to disrupted hair formation. While this is not often the case, there are some incidents where certain autoimmune conditions such as allergic  ...

Menstrual Cycle
...  second phase occurs. This is called the follicular or proliferative phase wherein the a woman’s body is in a stage of preparing the hormones needed. Hormones increase and sends a signal to the follicles of the ovary to prepare the release of a new egg. A woman at this stage normally does not feel anything. On the 14th day of the cycle, ovulation usually occurs but it varies from one woman  ...

Ovaries
...  and estrogen. They account for the secondary female characteristics, like the enlargement of the breasts, widening of the hips and the monthly menstruation. Inside the organ, you will see numerous follicles. Here are the ovarian follicles at different stages of development. Primordial follicle The primordial follicles are the most primitive type of ovarian follicle. They house the primary  ...

Spermatozoa
...  or the formation of spermatozoa. The gonadal-releasing hormone or factor in the hypothalamus is responsible for stimulating the anterior pituitary to increase the secretion of androgens and follicle Stimulating Hormone or FSH. The FSH, in return, will enhance the production of testosterone. During puberty, the testosterone blood levels of men increase. This true male gonadal hormone  ...

Gonads
...  facilitate endocrine functions. Aside from that, however, the ovaries are also tasked with the production of estrogen and progesterone (the female sex hormones). The corpus luteum and the ovarian follicles known as graafian produce estrogen. But, estrogen production is also seen in he adrenal cortex, the placenta and even in the male testes. This hormone has to take care of so many functions,  ...

Pituitary Hormones
...  Also assisting in the metabolism of fat in targeted cells, this hormone is produced by the hypothalamus. This hormone, like the thyrotropin, is also stimulated by emotional upheaval. The follicle-stimulating hormone’s actions vary, based on the gender of the body that it inhabits. The follicle-stimulating hormone in males encourage the testes to secrete a healthy amount of  ...

Thyroid Gland
...  thyroid. The veins travel from the internal jugular veins to the inferior thyroid vein to arrive at the brachiocephalic veins. The structure of the thyroid gland is made up of microscopic thyroid follicles. These follicles look like spheroid sacs that do not contain anything inside. The sacs are lined with cuboidal epithelium that’s formed by follicular cells. The cells secrete two  ...


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