Can someone plz explain reproduction in humans fro 5 marks
class 12 cbse biology
Answers
Explanation: Reproduction in human beings is by sexual reproduction where both the male and female gametes fertilize to give rise to an embryo. The fertilization of human embryo occurs inside the body of the female. Thus, it is called Internal Fertilization. Human Beings are viviparous organisms who give rise to Embryos directly instead of laying eggs. Let us understand a little more about the male and female reproductive organs and the process of fertilization in them.
Male Reproductive System
Testes: Male humans have two testes. They are situated in a bag of skin known as the scrotum. Scrotum lies outside the pelvic cavity.
Sperm Duct: These are thin ducts that arise from the testes.
Prostrate Gland: This gland is an accessory gland in males which pours its secretions into the sperm duct along with the seminal fluid from the testes and into the penis.
Urethra: Functions as a common pathway for the seminal fluid and urine in males. It is longer in males and shorter in females.
Penis: Is an organ which lies outside the body and functions to eliminate both urine and semen.
Female Reproductive System
Ovaries: They give rise to the female gamete or the egg. Each ovary releases one egg alternatively each month. Ovulation is the process of release of an egg from either one of the ovaries.
Fallopian tubes: Also known as the oviducts, these tubes arise from the ovaries and end at the uterine fundus. Their function is to carry the egg once it is released into the uterus where it can fuse with the male sperm.
Uterus: It is a large muscular organ that is present in the pelvic cavity. The uterus is the region of action during the menstrual cycle, fertilization and the development of the fetus.
Cervix: Is a circular muscle ring that is present towards the lower end of the uterus that dilates at the time of delivery of the baby.
Vagina: Is a muscular tube-like structure that is present at the lower end of the cervix and leads towards the outside of the female body. The vagina functions as the pathway for the penis to enter the female body and deposit the sperms which then swim their way to the uterus to fertilize with the female egg.
Urethra: It is shorter than that found in males. In females, the urethra serves only for passage of urine.
Answer:
Abe class 12 pad ke reproduction ke bare main nai Janta mental murakh