Skip to content
Epomedicine

Mnemonics, Simplified Concepts & Thoughts

Epomedicine

Mnemonics, Simplified Concepts & Thoughts

fetal skull transverse

Fetal Skull Dimensions : Mnemonic

Epomedicine, Jul 27, 2018

Anteroposterior Diameters

Mnemonic:

  1. Larger the alphabets, larger the diameter (V>F>B)
  2. Diameters with “sub” prefix are smaller than counterpart without it.

fetal skull AP

  1. mento-Vertical: 14 cm
    • SUB-mento-Vertical: 11.5 cm
  2. occipito-Frontal: 11.5 cm
    • SUB-occipito-Frontal: 10.5 cm
  3. sub-occipito-Bregmatic: 9.5 cm
  4. sub-mento-Bregmatic: 9.5 cm

Transverse Diameters

fetal skull transverse

Mnemonic: MTP (Medical Termination of Pregnancy) in increasing order.

  1. bi-Mastoid: 7.5 cm
  2. bi-Temporal: 8 cm
  3. bi-Parietal: 9.5 cm
33 shares
  • Facebook18
  • Twitter
PGMEE, MRCS, USMLE, MBBS, MD/MS AnatomyObGynReproductive system

Post navigation

Previous post
Next post

Related Posts

PGMEE, MRCS, USMLE, MBBS, MD/MS

Diacerin : Mnemonic

May 15, 2023May 15, 2023

Diacerin is a DMOAD (Diseases Modifying Osteoarthritis Drug) – D – Diarrhea (not recommended in >65 years – more vulnerable to diarrhea) I – IL-1 Inhibition A – Anthraquinone C – Chondroprotective effects E – Eczema R – Rashes I – Increase in hepatic enzymes (contraindicated in patients with history…

Read More
PGMEE, MRCS, USMLE, MBBS, MD/MS narrowed airway

Respiratory Examination – Noisy Breathing

Apr 2, 2015Apr 2, 2015

GRUNTING  Definition: A short, explosive, moaning or crying sound heard on expiration (Child and neonates) Cause: Any cause of respiratory distress Mechanism: In attempt to increase FRC which helps to keep narrowed or collapsing airways open, creating a longer time for alveolar gas exchange STERTOR Definition: Non-musical, low pitched, snoring…

Read More
PGMEE, MRCS, USMLE, MBBS, MD/MS

Paraplegia in Extension and Flexion

Feb 4, 2021

Paraplegia in extension and paraplegia in flexion occur only after the spinal shock has ceased. Paraplegia in extension indicates an increase in the extensor muscle tone owing to the overactivity of gamma efferent nerve fibers to muscle spindles as the result of the release of these neurons from the higher…

Read More

Comments (6)

  1. Tajmina parbin says:
    Sep 7, 2019 at 9:10 am

    Very useful information

    Reply
  2. samikshya lama says:
    Jan 21, 2020 at 3:52 pm

    why is submentovertical diameter less than mentovertical

    Reply
    1. Taha says:
      Nov 27, 2020 at 3:30 pm

      Because it is measured from a closer point to the back of the head.

      Reply
    2. Dr Ankit says:
      Mar 20, 2021 at 2:11 am

      Bcz it is made by God n we can not change it

      Reply
    3. lakshmi says:
      Jun 11, 2023 at 11:05 pm

      submento is from the side of the chin to vertex.so that is why it is smaller than mento vertical.

      Reply
  3. Dushyant says:
    Nov 24, 2021 at 7:28 am

    Pic is informative, could have been more clear graphically

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Pre-clinical (Basic Sciences)

Anatomy

Biochemistry

Community medicine (PSM)

Embryology

Microbiology

Pathology

Pharmacology

Physiology

Clinical Sciences

Anesthesia

Dermatology

Emergency medicine

Forensic

Internal medicine

Gynecology & Obstetrics

Oncology

Ophthalmology

Orthopedics

Otorhinolaryngology (ENT)

Pediatrics

Psychiatry

Radiology

Surgery

RSS Ask Epomedicine

  • What to study for Clinical examination in Orthopedics?
  • What is the mechanism of AVNRT?

Epomedicine weekly

  • About Epomedicine
  • Contact Us
  • Author Guidelines
  • Submit Article
  • Editorial Board
  • USMLE
  • MRCS
  • Thesis
©2026 Epomedicine | WordPress Theme by SuperbThemes