Read the following characteristics regarding a specific structure of the human female reproductive system: (i) It is an inner glandular layer that lines the uterine cavity. (ii) It undergoes cyclical changes during the menstrual cycle. (iii) It is the specific site where the blastocyst gets implanted. Identify the structure being described.

Step-by-step solution

The wall of the human uterus has three layers of tissue. The external thin membranous layer is the perimetrium. The middle thick layer of smooth muscle is the myometrium, which exhibits strong contractions during the delivery of the baby. The inner glandular layer that lines the uterine cavity is the endometrium. The endometrium undergoes cyclical changes during the menstrual cycle and serves as the site for the implantation of the blastocyst. The cervical canal is the cavity of the cervix and not a uterine tissue