Jove
Visualize
Contact Us
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 Concept Videos

Disorders of the Female Reproductive System01:24

Disorders of the Female Reproductive System

3.7K
The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
3.7K
External Female Genitals01:15

External Female Genitals

21.2K
The vulva encompasses the external structures of the female reproductive system. At the forefront is the monpubis, a cushion of fatty tissue atop the pubic bone. Once puberty sets in, this area typically grows hair. Extending from just behind the mons pubis are the labia majora (labia = 'lips'; majora = 'larger'), which are larger skin fs olds coated with hair. Nestled within are the labia minora (labia = 'lips'; minora = 'smaller'), which are thinner, more...
21.2K
Vagina01:26

Vagina

19.4K
The vaginal canal is a tubular structure averaging about 10 cm in length that acts as the entryway to the female reproductive system and the passageway for menstrual flow and childbirth. The interior walls of the vagina exhibit concentric folds called rugae and are topped by an area known as the fornix, which connects with the protruding cervical portion of the uterus. This canal is comprised of an external fibrous layer, a muscular middle layer, and an inner lining with mucosal rugae, which...
19.4K
Menses Phase01:18

Menses Phase

790
The uterine cycle begins with the menstrual phase, which is considered day one of the cycle and typically lasts about five days. This phase is characterized by the degeneration and shedding of the stratum functionalis, the functional layer of the endometrium.
When fertilization does not occur, the corpus luteum deteriorates, causing a significant drop in the levels of estrogen and progesterone in the body. This hormonal decrease triggers the release of prostaglandins, which cause the uterine...
790
Uterine Tubes01:16

Uterine Tubes

1.6K
The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
1.6K
The Menstrual Cycle01:19

The Menstrual Cycle

2.2K
The menstrual cycle is a recurrent sequence of changes in the uterine endometrium, specifically its functional layer, the stratum functionalis. This cycle prepares the uterus for potential pregnancy. This cycle typically spans 21–35 days, averaging 28 days, and aligns with the ovarian cycle, regulated by fluctuating levels of ovarian hormones, primarily estrogen and progesterone.
The menstrual phase occurs from days 1 to 5 and involves the shedding of the stratum functionalis, as a...
2.2K

You might also read

Related Articles

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

Sort by
Same author

Artificial Intelligence in Cardiac Point-of-Care Ultrasound: A Narrative Review.

Diagnostics (Basel, Switzerland)·2026
Same author

Postpartum acquired hemophilia presenting as compartment syndrome: a diagnostic challenge in the emergency department.

International journal of emergency medicine·2026
Same author

Man With Blurry Vision.

Annals of emergency medicine·2025
Same author

Pregnant Woman With Intermittent Abdominal Pain.

Annals of emergency medicine·2025
Same author

Man With a Gut Feeling.

Annals of emergency medicine·2025
Same author

Reply to Comment on "The Uncommon Encounter of a Transcranial TASER Injury".

The Journal of emergency medicine·2025
Same journal

Catching Silent Heart Killers-How Bedside Ultrasound Revealed Hidden Endocarditis: A Case Report.

Clinical practice and cases in emergency medicine·2026
Same journal

Bucket Handle Injury in Blunt Abdominal Trauma.

Clinical practice and cases in emergency medicine·2026
Same journal

Methicillin-Resistant Staphylococcus Aureus Septic Internal Jugular Thrombophlebitis: A Case Report.

Clinical practice and cases in emergency medicine·2026
Same journal

Neurotoxic Snakebite Presenting with Early Neck Pain and Muscle Weakness: A Case Report of a Diagnostic Pitfall.

Clinical practice and cases in emergency medicine·2026
Same journal

The Complexity of Weak Rhesus Positivity in Pregnancy: Challenges and Management.

Clinical practice and cases in emergency medicine·2026
Same journal

Carotid-cavernous Fistula in a Patient with Minimal Head and Facial Trauma: A Case Report.

Clinical practice and cases in emergency medicine·2026
See all related articles

Related Experiment Video

Updated: Nov 29, 2025

Tissue Processing and Isolation of Primary Fibroblasts from the Human Vagina
08:30

Tissue Processing and Isolation of Primary Fibroblasts from the Human Vagina

Published on: November 22, 2024

789

Female with Vaginal Bleeding.

Mark Quilon1, Alec Glucksman1, Gregory Emmanuel2

  • 1Staten Island University Hospital, Department of Emergency Medicine, Staten Island, New York.

Clinical Practice and Cases in Emergency Medicine
|November 20, 2020
PubMed
Summary
This summary is machine-generated.

Calcification of the yolk sac during early pregnancy is a critical ultrasound finding indicating fetal demise. Emergency physicians must recognize this sign for timely management of pregnancy complications.

More Related Videos

Performing Vaginal Lavage, Crystal Violet Staining, and Vaginal Cytological Evaluation for Mouse Estrous Cycle Staging Identification
09:01

Performing Vaginal Lavage, Crystal Violet Staining, and Vaginal Cytological Evaluation for Mouse Estrous Cycle Staging Identification

Published on: September 15, 2012

118.1K
Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
08:53

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice

Published on: December 4, 2020

6.5K

Related Experiment Videos

Last Updated: Nov 29, 2025

Tissue Processing and Isolation of Primary Fibroblasts from the Human Vagina
08:30

Tissue Processing and Isolation of Primary Fibroblasts from the Human Vagina

Published on: November 22, 2024

789
Performing Vaginal Lavage, Crystal Violet Staining, and Vaginal Cytological Evaluation for Mouse Estrous Cycle Staging Identification
09:01

Performing Vaginal Lavage, Crystal Violet Staining, and Vaginal Cytological Evaluation for Mouse Estrous Cycle Staging Identification

Published on: September 15, 2012

118.1K
Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
08:53

Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice

Published on: December 4, 2020

6.5K

Area of Science:

  • Obstetrics and Gynecology
  • Emergency Medicine
  • Radiology

Background:

  • Early pregnancy complications require prompt diagnosis.
  • Point-of-care ultrasound (POCUS) is increasingly utilized in emergency settings.
  • Yolk sac abnormalities can indicate adverse pregnancy outcomes.

Purpose of the Study:

  • To highlight the significance of a calcified yolk sac identified via POCUS.
  • To emphasize the role of POCUS in diagnosing early pregnancy pathologies.
  • To inform emergency physicians about managing findings suggestive of fetal demise.

Main Methods:

  • A case presentation of a pregnant female with concerning symptoms.
  • Utilization of point-of-care ultrasound (POCUS) for rapid assessment.
  • Identification of a calcified yolk sac on ultrasound imaging.

Main Results:

  • A calcified yolk sac was visualized on POCUS in a patient with vaginal bleeding and abdominal cramping.
  • This finding is associated with fetal demise in the first trimester.

Conclusions:

  • Calcification of the yolk sac is a significant sonographic marker for first-trimester fetal demise.
  • Emergency physicians need proficiency in POCUS interpretation for managing obstetric emergencies.
  • Awareness of POCUS findings aids in appropriate patient management and counseling.