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Birth Control Methods

Birth Control Methods

Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although vasectomy...

Intrauterine Drug Delivery Systems

Intrauterine Drug Delivery Systems

Controlled-release systems for intravaginal and intrauterine drug delivery have been developed primarily for the administration of contraceptive steroid hormones. These delivery routes circumvent first-pass hepatic metabolism, thereby enhancing bioavailability and allowing for reduced systemic dosages compared to oral administration. Such approaches contribute to improved therapeutic efficacy and patient compliance, particularly in long-term contraceptive regimens.Intravaginal Drug Delivery...

Hormonal Control of the Ovarian Cycle

Hormonal Control of the Ovarian Cycle

The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...

Hormonal Regulation of the Menstrual Cycle

Hormonal Regulation of the Menstrual Cycle

The ovarian cycle regulates endometrial changes throughout a single menstrual cycle via the coordinated action of gonadotrophin-releasing hormone (GnRH) and gonadotrophins.
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH release.

Hormonal Regulation

Hormonal Regulation

The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.

Hormonal Regulation

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.

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Related Experiment Video

Updated: Jun 13, 2026

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

Birth control.

Canadian Family Physician Medecin De Famille Canadien

|May 15, 2010

Summary

This summary is machine-generated.

Family physicians need to counsel patients on modern birth control methods, including sterilization and abortion procedures. Knowledge of various contraceptive options is essential for effective family planning guidance.

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Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

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Published on: May 12, 2019

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Area of Science:

Family Medicine
Reproductive Health
Contraception

Background:

Family physicians play a crucial role in patient reproductive health counseling.
A comprehensive understanding of available contraceptive methods is necessary for effective patient care.

Purpose of the Study:

To provide family physicians with essential knowledge on modern birth control techniques.
To review various contraceptive methods, sterilization, and abortion procedures.

Main Methods:

Review of modern contraceptive techniques.
Discussion of sterilization procedures for males and females.
Overview of abortion procedures and referral agencies.

Main Results:

Detailed examination of the rhythm method, coitus interruptus, condoms, and cervical occlusive devices.
Explanation of chemical contraceptives, intrauterine devices, and contraceptive pills.
Information on male and female sterilization.

Conclusions:

Family physicians must be knowledgeable about a wide range of contraceptive options.
Physicians should be prepared to counsel patients on sterilization and abortion, and make necessary referrals.