BHU NO - 2015
Anatomy and Physiology
Easy

Which one of the following pairs regarding pelvis is not correct?

Appeared in: BHU NO - 2015

Explanation

  • The question requires identifying the incorrect pairing among the four pelvic types described by the Caldwell-Moloy classification.
  • The pairing 'Anthropoid Ape type' is considered the least accurate.
  • While the term 'anthropoid' means 'resembling an ape' and is historically used, the more precise anatomical description refers to its long oval shape (anteroposteriorly elongated).
  • Unlike the other options which describe a direct characteristic (Female type, Male type, Flat type), 'Ape type' is an analogy or comparison.
  • In a test of precise anatomical knowledge, this analogical pairing is the most likely intended incorrect option.

Why Other Options Were Wrong

  • Option A: This is a correct pairing. The Gynecoid pelvis is the classic 'female type' pelvis, found in about 50% of women and is the most suitable for childbirth.
  • Option B: This is a correct pairing. The Android pelvis has features characteristic of a typical male pelvis, such as a narrow, heart-shaped inlet.
  • Option D: This is a correct pairing. The Platypelloid pelvis is characterized by a flattened, wide shape, hence the name 'Flat type'.

Related Visual

Visual explanation — Related Visual
Clinical Relevance
  • Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Caldwell-Moloy classification of female pelvic types as background academic context rather than a clinical decision trigger.
  • Understanding pelvic types is crucial for nurses, especially in obstetrics, as the shape of the maternal pelvis significantly influences the progress of labor and the mode of delivery.
  • A nurse's assessment of labor progress can be informed by knowledge of pelvic anatomy. For instance, a slow descent of the fetal head might be associated with an Android or Platypelloid pelvis, prompting closer monitoring for cephalopelvic disproportion (CPD).
  • Patient education is another key role. A nurse can explain to an expectant mother how her pelvic shape might influence labor, helping to manage expectations and reduce anxiety.
How to Approach the Question
  • First, read the question carefully and note the negative keyword 'not correct'. This means you are looking for the false statement or incorrect pairing.
  • Recall the four main pelvic types from the Caldwell-Moloy classification: Gynecoid, Android, Anthropoid, and Platypelloid.
  • Evaluate each option's pairing:
  • A) Gynecoid - Female type: This is the standard definition. Correct.
  • B) Android - Male type: This is the standard definition. Correct.
  • D) Platypelloid - Flat type: 'Platy' means flat. This is a correct description.
Concept Tested & Keywords
  • Concept Tested: Caldwell-Moloy classification of female pelvic types.
  • Stem keywords: pelvis, Gynecoid, Android, Anthropoid, Platypelloid
  • Lead-in keywords: not correct
  • Negative lead-in flag: The question asks for the pair that is NOT correct.

Question ID

QpmajCLdcxiOitn0uSatMi

Reference Book

E6 Obstetrics Williams p. 16-33

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 38-46

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Attempt every question from this paper in a timed mock, then review the full solution for each one.