Which of the following pairs regarding presentation and presenting part in woman during labour is NOT correct
A. Cephalic presentation: Chin
B. Face presentation: Face
C. Transverse presentation: Shoulder
D. Breach presentation: Buttock
Correct Answer: A. Cephalic presentation: Chin
Explanation
Question
Which of the following pairs regarding presentation and presenting part in a woman during labour is NOT correct?
(Explanation)
Key concepts to understand first
Presentation
- It refers to the part of the fetus that occupies the lower pole of the uterus and is felt first during vaginal examination.
Presenting part
- It is the part of the fetus that is lowest in the birth canal and first felt through the cervix.
Correct pairs of presentation and presenting part
PresentationPresenting partStatus Vertex Occiput ✅ Correct Breech Sacrum ✅ Correct Face Mentum (chin) ✅ Correct Shoulder Acromion (shoulder) ✅ Correct
❌ Incorrect (NOT correct) pair
Face presentation – Occiput
🔹 Why incorrect?
- In face presentation, the fetal head is fully extended.
- The presenting part is the mentum (chin), not the occiput.
- Occiput is the presenting part only in vertex presentation.
✅ Final Answer
Face presentation – Occiput is the NOT correct pair.
Other Options Details
These options relate to fetal presentation, which means the part of the fetus that occupies the lower pole of the uterus and first enters the birth canal.
Let’s explain each option clearly and also note whether the pair is correct or not.
A. Cephalic presentation : Chin
❌ Incorrect
- Cephalic presentation means the head presents first.
- In a normal cephalic (vertex) presentation, the presenting part is the occiput, not the chin.
- Chin becomes the presenting part only in face presentation, which is a subtype of cephalic presentation but not the usual one.
✅ Correct match should be:
Cephalic presentation → Occiput
B. Face presentation : Face
✅ Correct
- In face presentation, the fetal head is fully extended.
- The face (especially the chin/mentum) is the presenting part.
- It occurs due to marked extension of the neck.
C. Transverse presentation : Shoulder
✅ Correct
- In transverse lie, the fetus lies horizontally in the uterus.
- The shoulder is the presenting part.
- Vaginal delivery is usually not possible unless corrected.
D. Breech presentation : Buttock
✅ Correct
- In breech presentation, the buttocks or feet present first.
- Most commonly, the buttocks are the presenting part (especially in frank breech).
Summary Table
Option Pair Correct / Incorrect A Cephalic → Chin ❌ Incorrect B Face → Face ✅ Correct C Transverse → Shoulder ✅ Correct D Breech → Buttock ✅ Correct
✅ Key Takeaway
- Cephalic presentation → Occiput
- Face presentation → Face (chin)
- Transverse presentation → Shoulder
- Breech presentation → Buttock
I hope that you liked this article.
Thanks!! 🙏 😊
Writer: Vandita Singh, Lucknow (GS India Nursing Group