The cervix or cervix uteri is a dynamic fibromuscular organ of the female reproductive system that connects the vagina with the uterine cavity. The human cervix has been documented anatomically since at least the time of Hippocrates, over 2,000 years ago^{[citation needed]}. The cervix is approximately 4 cm long with a diameter of approximately 3 cm and tends to be described as a cylindrical shape, although the front and back walls of the cervix are contiguous. The size of the cervix changes throughout a women's life cycle. For example, during their fertile years of the reproductive cycle, females tend to have a larger cervix vis á vis postmenopausal females; likewise, females who have produced offspring have a larger sized cervix than females who have not produced offspring.

गर्भाशयग्रीवा गर्भाशय का मुख है। स्त्री के शरीर में बाहर से दिखने वाली संरचना को योनि द्वार (vulva) कहा जाता है। योनि के जितने भाग में पुरुष का लिंग प्रवेश करता है, उतना भाग योनि (vagina) है। लिंग से निकलने वाला वीर्य इस ग्रीवा से अंदर प्रवेश करके गर्भाशय में पहुँचता है।