31. Periodic episodes of contractions called contractions are common during pregnancy. 32. The are 2 small folds of skin surrounding the other genital structures in the female. 33. The are 2 larger folds of skin lateral to the labia minora. 34. The is a small mass of erectile tissue and nerves that serves as the organ of sexual stimulation in females. 35. The is muscular tube lined with mucus membranes that serves as the birth canal and organ of sexual intercourse. 36. The topmost part of the uterus is called the . 37. The cervix is completely dilated at cm. 38. The formation of a woman's eggs begins . 39. The hormone is responsible for development of the female shape, development of the breasts, and stimulation of the reproductive organs. 40. The hormone that causes ovulation is . 41. The hormone that dominates during the early part of the menstrual cycle is . 42. The human pregnancy lasts about weeks. 43. The inner lining of the uterus is called the . 44. The job of the is to transport eggs to the uterus. 45. The journey of the egg from ovary to uterus takes approx days. 46. The major part of the uterus is called the . 47. The menstrual cycle begins with the day of the period. 48. The menstrual period is also referred to by the term . 49. The narrow lower part of the uterus is called the . 50. The ovaries usually release ovum per month and produce 2 types of hormones, estrogen and progesterone. 51. The presence of HCG can be detected in the urine and is used as a test. 52. The process of giving birth is known as . 53. The removal of the uterus is known as a . 54. The second stage of labor is called . 55. The transition stage is marked by changes and an urge to push. 56. The typical menstrual period lasts approximately days. 57. The uterus is also called the .