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

Adrenal Gland Disorders01:27

Adrenal Gland Disorders

2.6K
Adrenal gland disorders manifest when the production of adrenal hormones deviates from the norm, resulting in either excessive or insufficient concentrations.
Adrenal insufficiency, characterized by insufficient cortisol and aldosterone production, leads to conditions like Addison's disease. This disorder, affecting the adrenal cortex, exhibits symptoms such as skin bronzing, dehydration, low blood pressure, fatigue, and weight loss. Congenital adrenal hyperplasia, a genetic ailment causing...
2.6K
Adrenergic Neurons: Neurotransmission01:27

Adrenergic Neurons: Neurotransmission

4.8K
Postganglionic sympathetic fibers (except those supplying the sweat glands) releasing noradrenaline or norepinephrine are called noradrenergic or adrenergic neurons. Noradrenaline, dopamine, adrenaline, or epinephrine are collectively called "catecholamines" as they contain a catechol moiety and an amine side chain. The five stages of neurotransmitter release involve their synthesis, storage, release, reuptake and metabolism.
Synthesis: Catecholamine synthesis requires tyrosine, which...
4.8K
Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla01:27

Sympathetic Pathways: Collateral Ganglia and Adrenal Medulla

2.1K
The sympathetic pathways of the collateral ganglia and adrenal medulla serve unique but interconnected roles in the sympathetic response.
Collateral Ganglia
Sympathetic preganglionic axons reach the collateral ganglia along the route of splanchnic nerves. These nerves bypass the sympathetic trunk and communicate with sympathetic postganglionic neurons housed in the prevertebral ganglia. These ganglia supply the organs of the abdominopelvic cavity.
The greater splanchnic nerve, formed by the...
2.1K
Disorders of the Autonomic Nervous System01:18

Disorders of the Autonomic Nervous System

1.1K
The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's...
1.1K
Sympathetic Signaling01:31

Sympathetic Signaling

1.8K
Sympathetic signaling, a vital part of the autonomic nervous system, plays a crucial role in mobilizing the body's resources in response to stress or emergencies. It involves the transmission of nerve impulses from sympathetic preganglionic fibers to postganglionic fibers. This results in the release of specific neurotransmitters and activation of adrenergic receptors.
Sympathetic preganglionic fibers release the neurotransmitter acetylcholine (ACh) onto the ganglionic neurons in the...
1.8K
Major Hormones and Their Functions01:27

Major Hormones and Their Functions

1.3K
Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
Oxytocin, produced in the hypothalamus and released by the pituitary gland, plays a role in social bonding, childbirth, and...
1.3K

You might also read

Related Articles

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

Sort by
Same author

Changing Trends in Cardiovascular Disease Burden in North Africa and the Middle East, 1990-2023: A Joinpoint Analysis of GBD 2023 Data.

Journal of clinical medicine·2026
Same author

Streptococcal toxic shock syndrome caused by ST525 Streptococcus dysgalactiae subsp. equisimilis with genomic characterization of virulence and antimicrobial resistance.

European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology·2026
Same author

Clinical Characteristics and Therapeutic Dilemmas in Nocardiosis: Insights from a Case Series.

International journal of antimicrobial agents·2026
Same author

International Trends in Head and Neck Cancer Mortality.

JAMA otolaryngology-- head & neck surgery·2026
Same author

<i>Digital Tattoos</i> in Infectious Diseases Management.

Open forum infectious diseases·2026
Same author

Accuracy of 0.25 µg/mL-Interval MIC Measurement of Vancomycin Among Staphylococcus aureus: a Pilot Study.

Clinical laboratory·2026

Related Experiment Video

Updated: Nov 28, 2025

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

23.9K

Massive pheochromocytoma.

Terumitsu Anai1, Kosuke Oka1, Yuya Yokota1

  • 1Department of General Medicine Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan.

Clinical Case Reports
|November 25, 2020
PubMed
Summary

Pheochromocytoma, a tumor causing critical hypertensive emergencies, is common in patients with large adrenal tumors. Early screening for pheochromocytoma is crucial before any medical intervention.

Keywords:
123I‐metaiodobenzylguanidine scintigraphypheochromocytomaprimary care

More Related Videos

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

19.2K
Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors
08:57

Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors

Published on: May 17, 2024

2.3K

Related Experiment Videos

Last Updated: Nov 28, 2025

A Novel Method: Super-selective Adrenal Venous Sampling
06:08

A Novel Method: Super-selective Adrenal Venous Sampling

Published on: September 15, 2017

23.9K
Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
07:43

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas

Published on: January 17, 2018

19.2K
Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors
08:57

Author Spotlight: Genetically Engineered Mouse Models and Pathological Characterization of Neurofibromatosis Type 1 Associated Tumors

Published on: May 17, 2024

2.3K

Area of Science:

  • Endocrinology
  • Oncology
  • Nephrology

Background:

  • Pheochromocytoma is a rare tumor of the adrenal medulla.
  • Complications include hypertensive emergencies, which can be life-threatening.
  • Adrenal tumors are often discovered incidentally during imaging for other conditions.

Purpose of the Study:

  • To highlight the importance of recognizing pheochromocytoma in patients with large adrenal tumors.
  • To emphasize the critical need for screening prior to intervention in these patients.
  • To reduce the incidence of severe complications associated with undiagnosed pheochromocytoma.

Main Methods:

  • Review of clinical guidelines and literature.
  • Analysis of case studies involving patients with large adrenal tumors and pheochromocytoma.
  • Discussion of diagnostic and screening protocols.

Main Results:

  • Pheochromocytoma is a significant cause of hypertensive emergencies.
  • A considerable number of patients with large adrenal tumors have undiagnosed pheochromocytoma.
  • Pre-intervention screening can prevent critical complications.

Conclusions:

  • Clinicians must consider pheochromocytoma in patients presenting with large adrenal masses.
  • Screening for pheochromocytoma should be a routine part of the workup for large adrenal tumors.
  • Timely diagnosis and management of pheochromocytoma are essential for patient safety.