This innate mechanism is evolutionary in the sense that the hormones for females are concurrently passed down to other females, and the same with males. The gradual growth in sex difference throughout a person's life is a product of various hormones. A review in Nature Reviews Neuroscience observed that "because it is easier to manipulate hormone levels than the expression of sex chromosome genes, the effects of hormones have been studied much more extensively, and are much better understood, than the direct actions in the brain of sex chromosome genes. Further, the mature sperms are taken by the penis and are transferred to the female genital part, where it takes part in the process of fertilization with the female gamete ovum. Males have larger left hemispheric asymmetries than females in various brain areas, including the superior temporal gyrus, Heschl gyrus, deeper central sulcus, overall temporal and parietal and inferior parietal lobule, thalamus and posterior cingulate. Penis, seminal vesicles, vas deferens, prostate, Cowper's gland and scrotum testes. The research was consistent with previous studies that found that females performed better than males on tasks of attention, face and word memory, and social cognition tests, while males performed better on spatial processing and sensorimotor skill tasks. When an ovary does ovulate, or release an egg, it is swept into the lumen of the fallopian tube by the fimbriae. The ovaries alternately release an egg. The male reproductive organs functions to produces sperms and transfer it to the female reproductive organ to get fertilize and produce the new one of their kind. What is the difference between Male and Female Reproductive System? It is only after all alternative options have been considered that surgery is recommended in these cases. Genetic abnormalities, infections sexually transmitted disease , cancers, autoimmune disorders, infertility, endometriosis. Males show larger cerebellum than females. Maturation and storage of sperms take place in the epididymis, and they are passed into the vas deferens, which is about 40 centimetres long. There is no pubic hair on the labia minora, but there are sebaceous glands. On the contrary, the female reproductive system is located inside the body, with entry and exit at the vulva.