Actions of estrogens, Biology

Assignment Help:

Actions of Estrogens

  1. The most general effect of the estrogens is to promote tissue growth. It is more pronounced in the accessory sex tissues. Estrogens stimulate cell division in the ' deeper parts of the skin and causes a more rapid replacement of the outer cornified layers of the skin. There is some evidence that high levels of estrogens (under pathological conditions) may be potentially dangerous as they may encourage the formation of cancer in certain individuals.
  2. Estrogens are required for the maintenance of vaginal lining and uterine growth. It has been observed that in the experimental animals deprived of estrogens, the vaginal lining and the uterine wall become thin, and mitotic divisions seldom occur in these tissues. Administration of estrogens to the estrogen-deprived animals causes rapid growth of the vaginal and the uterine tissue. The metabolic activity of these tissues also increases as evidenced by augmented uptake of water and electrolytes by the tissues and rise in the RNA content of the tissue.
  3. Estrogens are essential for the anatomic preparation of the mammary glands for milk secretion. In some species it affects mammary development in combination with progesterone. But in some species, estrogens alone or progesterone alone produce the effect. As a general rule, the mammary glands require pre-treatment with estrogens before the progestogens are effective.
  4. In mammals sexual receptivity or heat coincides with a period during which the ovaries are secreting large amounts of estrogens. Full mating behaviour generally depends upon both estrogen and progesterone. These ovarian hormones probably act through the central nervous system (hypothalamus) to condition the psychic manifestations such as increased spontaneous activity, lordosis, sexual receptivity etc.

Related Discussions:- Actions of estrogens

Clinical manifestations of maple syrup urine disease, Q. Clinical manifesta...

Q. Clinical manifestations of maple syrup urine disease? Clinical manifestations are expressed upon protein loading or with febrile illness. In most severely impaired enzyme de

Explain food plan for an anaemic pregnant lady, Explain Food plan for an an...

Explain Food plan for an anaemic pregnant lady? Justification of the Plan: The plan is for an anaemic pregnant lady, from a lower socio-economic level and doing moderate lev

Name the alpha-islet cells of the pancreas, Person X is a healthy human who...

Person X is a healthy human who has volunteered to take experimental drug Y.  Person X has a normal dinner at 6 PM on April 1 and then does not eat for 12 hours.  At 5 PM on A

Strategie of the anti-retroviral drug used in aids treatment, Q. What are s...

Q. What are some strategies of the anti-retroviral drugs used in the AIDS treatment? The Anti-retroviral drugs used in AIDS treatment try to approach any of the several steps o

Illustrate the applications of gellan gum, Illustrate the Applications of G...

Illustrate the Applications of Gellan gum Gellan is a highly versatile food ingredient and has numerous applications in foods. The combination of gelatin with gellan, by compar

Define about the extra-ocular muscles, Describe about the extra-ocular musc...

Describe about the extra-ocular muscles The extra-ocular muscles are mainly involved in the maintenance of postural tonicity and performance of quick contractions. The prima

Hypothalamus gland, HYPOTHALAMUS - Hypothalamus develops from the ectod...

HYPOTHALAMUS - Hypothalamus develops from the ectoderm of the embryo. Location and Structure. It lies below or inferior to the thalamus. The hypothalamus is connected to t

Characteristics of lake ecosystems, Characteristics of Lake Ecosystems ...

Characteristics of Lake Ecosystems The environment of static waters of lakes and ponds sharply contrasts with those of lotic ecosystems. Light penetration in lakes is usually

What is dna sequencing, DNA sequencing is the process of reading the nucleo...

DNA sequencing is the process of reading the nucleotide bases in a DNA molecule. It includes any technology or method which is used to verify the order of the four bases- guanine,

Fire protection - factors affecting occupational health, Fire Protection - ...

Fire Protection - Factors Affecting Occupational Health Fire protection and extinguishing devices require to be installed at proper places in the work place and proper notices

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