Jove
Visualize
Contact Us

Related Concept Videos

Birth Control Methods01:22

Birth Control Methods

5.4K
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...
5.4K
Hormonal Control of the Ovarian Cycle01:30

Hormonal Control of the Ovarian Cycle

5.9K
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...
5.9K
Hormonal Regulation of the Menstrual Cycle01:22

Hormonal Regulation of the Menstrual Cycle

1.1K
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...
1.1K
Hormonal Regulation01:40

Hormonal Regulation

46.1K
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.
46.1K
Hormonal Regulation01:33

Hormonal Regulation

35.0K
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.
35.0K
Secondary Messengers in Hormone Action01:26

Secondary Messengers in Hormone Action

3.8K
Water-soluble hormones cannot cross the plasma membrane, so they rely on protein receptors that span the membrane to trigger intracellular signaling pathways. These pathways then activate second messengers inside the cell, including cAMP or calcium ions.
Many hormones bind to transmembrane G protein-coupled receptors that connect to regulatory G proteins. These G proteins can then activate enzymes such as adenylyl cyclase or phospholipase C. Adenylyl cyclase converts ATP to cAMP, activating...
3.8K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Electronic access to adolescents' health records: legal, policy, and practice implications.

Family practice management·2015
Same author

Community health centers' role in family planning.

Journal of health care for the poor and underserved·2013
Same author

Preventing gaps when switching contraceptives.

American family physician·2011
Same author

A piece of my mind. Mistakes.

JAMA·2006
Same author

Initiating hormonal contraception.

American family physician·2006
Same author

Safety of and contraindications for use of intrauterine devices.

American family physician·2005
Same journal

For Post-stent Patients With Atherosclerotic Coronary Vascular Disease Who Are Taking an Anticoagulant, Adding Aspirin Worsens Outcomes.

American family physician·2026
Same journal

Nausea and Vomiting During Pregnancy.

American family physician·2026
Same journal

Metabolic Dysfunction-Associated Steatotic Liver Disease: Diagnosis and Management.

American family physician·2026
Same journal

Aerobic Exercise Is the Better Exercise Modality for Knee Osteoarthritis.

American family physician·2026
Same journal

Overscreening Leads to Overdiagnosis of MASLD.

American family physician·2026
Same journal

Type 2 Diabetes: Outpatient Insulin Management.

American family physician·2026
See all related articles
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Nov 16, 2025

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
08:46

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

Published on: September 16, 2021

6.3K

Initiating Hormonal Contraception.

Ruth Lesnewski1

  • 1Mount Sinai Beth Israel, New York, NY, USA.

American Family Physician
|February 25, 2021
PubMed
Summary
This summary is machine-generated.

Most patients can start hormonal contraception anytime, regardless of their menstrual cycle. This flexible approach improves reproductive health and autonomy, removing unnecessary barriers to access.

More Related Videos

Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model
06:49

Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model

Published on: April 7, 2023

2.0K
Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
04:37

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

16.0K

Related Experiment Videos

Last Updated: Nov 16, 2025

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives
08:46

Fertility Preservation Through Oocyte Vitrification: Clinical and Laboratory Perspectives

Published on: September 16, 2021

6.3K
Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model
06:49

Methods for Studying Uterine Contributions to Pregnancy Establishment in an Ovariectomized Mouse Model

Published on: April 7, 2023

2.0K
Reproductive Techniques for Ovarian Monitoring and Control in Amphibians
04:37

Reproductive Techniques for Ovarian Monitoring and Control in Amphibians

Published on: May 12, 2019

16.0K

Area of Science:

  • Reproductive Health
  • Contraception Management

Background:

  • Initiating hormonal contraception often faces unnecessary delays.
  • Patient-centered approaches are crucial for reproductive autonomy.

Purpose of the Study:

  • To outline an evidence-based, flexible approach to initiating hormonal contraception.
  • To identify strategies for improving patient access and adherence.

Main Methods:

  • Review of current evidence and clinical guidelines for initiating hormonal contraception.
  • Analysis of patient-centered care strategies and barrier reduction.

Main Results:

  • Hormonal contraception can be initiated at any point in the menstrual cycle.
  • Papanicolaou tests are not required before prescribing hormonal contraception.
  • Immediate initiation is safe post-childbirth or pregnancy loss (with exceptions).

Conclusions:

  • Flexible, patient-centered initiation of hormonal contraception enhances health and autonomy.
  • Removing barriers like unnecessary waiting periods and tests improves access.
  • Strategies like one-year supplies and telemedicine increase adherence and reduce costs.