Uterus Structure and Birth Canal — NEET Biology
✅ Asked in NEET 2023The uterus is single and it is also called womb. The shape of the uterus is like an inverted pear. It is supported by ligaments attached to the pelvic wall. The uterus opens into vagina through a narrow cervix. The cavity of the cervix is called cervical canal which alongwith vagina forms the birth canal. The wall of the uterus has three layers of tissue. The external thin membranous perimetrium, middle thick layer of smooth muscle, myometrium and inner glandular layer called endometrium that lines the uterine cavity. The endometrium undergoes cyclical changes during menstrual cycle while the myometrium exhibits strong contraction during delivery of the baby.
NTA tests whether students know that the cervical canal (cavity of cervix) together with the vagina forms the birth canal, not the uterus alone. The common mistake is confusing the birth canal with just the vagina or thinking the entire uterus forms it. Remember: the narrow cervix opens into the vagina, and this cervical canal + vagina together = birth canal through which the baby passes during delivery. Also note the three uterine wall layers—perimetrium (outer), myometrium (muscular, contracts during labor), and endometrium (inner, cyclical changes)—as NTA often asks about their functions.
Given below are two statements: Statement I: Vas deferens receives a duct from seminal vesicle and opens into urethra as the ejaculatory duct. Statement II: The cavity of the cervix is called cervical canal which along with vagina forms birth canal. Choose the correct answer from the options given below:
Through deep analysis of NEET and NTA, 88 of 90 questions from the NEET 2026 paper were matched straight from the MedicNEET Biology question bank.
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