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Page 1 FLASHCARD HUMAN REPRODUCTION Page 2 FLASHCARD HUMAN REPRODUCTION MALE REPRODUCTIVE SYSTEM The male reproductive system is located in the pelvis region Page 3 FLASHCARD HUMAN REPRODUCTION MALE REPRODUCTIVE SYSTEM The male reproductive system is located in the pelvis region The Male Reproductive system consists of - A pair of testes Accessory ducts Glands The external genitalia Page 4 FLASHCARD HUMAN REPRODUCTION MALE REPRODUCTIVE SYSTEM The male reproductive system is located in the pelvis region The Male Reproductive system consists of - A pair of testes Accessory ducts Glands The external genitalia Diagrammatic sectional view of male pelvis showing reproductive system Page 5 FLASHCARD HUMAN REPRODUCTION MALE REPRODUCTIVE SYSTEM The male reproductive system is located in the pelvis region The Male Reproductive system consists of - A pair of testes Accessory ducts Glands The external genitalia Diagrammatic sectional view of male pelvis showing reproductive system Testis The testes are oval in shape and situated outside the abdominal cavity within a pouch called scrotum The testis is covered by a dense covering Each Testis has about 250 compartments called testicular lobulesRead More
FAQs on Flashcards: Human Reproduction
| 1. What are the main stages of the menstrual cycle and how long does each phase last? |  |
Ans. The menstrual cycle has four phases: menstruation (3-7 days), follicular phase (about 10 days), ovulation (1 day), and luteal phase (12-14 days). Menstruation involves shedding of the uterine lining. The follicular phase sees follicle development and oestrogen rise. Ovulation releases a mature egg. The luteal phase prepares the uterus for implantation through progesterone secretion. Cycle length averages 28 days but ranges from 21-35 days normally.
| 2. How do hormones control human reproduction and fertilisation? | |
Ans. Reproductive hormones orchestrate gametogenesis and fertilisation through hormonal signalling pathways. Gonadotropin-releasing hormone (GnRH) from the hypothalamus triggers follicle-stimulating hormone (FSH) and luteinising hormone (LH) release. FSH stimulates oestrogen production; LH triggers ovulation. In males, FSH promotes spermatogenesis while testosterone enables sperm development. Progesterone supports pregnancy maintenance after fertilisation.
| 3. What happens during fertilisation and implantation after an egg meets sperm? | |
Ans. Fertilisation occurs when a sperm penetrates the ovum in the fallopian tube, forming a zygote through fusion of male and female pronuclei. The zygote undergoes mitotic divisions becoming a morula, then a blastocyst. Implantation happens 6-10 days post-fertilisation when the blastocyst embeds into the prepared endometrium. This establishes nutrient exchange and hormone production essential for pregnancy continuation.
| 4. What's the difference between gametogenesis in males and females during reproduction? | |
Ans. Spermatogenesis (male gametogenesis) produces four functional sperm continuously from puberty, completing in roughly 74 days within seminiferous tubules. Oogenesis (female gametogenesis) produces one functional ovum monthly from foetal development through reproductive years via meiosis. Males generate millions of sperm; females release one mature egg per cycle. Oogenesis arrests at specific meiotic stages, resuming at ovulation and fertilisation.
| 5. How does the placenta function in protecting and nourishing the developing fetus? | |
Ans. The placenta acts as a dual-purpose organ facilitating maternal-fetal exchange without direct blood mixing. It transfers oxygen, nutrients, and antibodies across the placental barrier to support fetal development. Simultaneously, it removes fetal metabolic wastes like carbon dioxide and urea. The placenta also secretes human chorionic gonadotropin (hCG) and progesterone maintaining pregnancy and preventing menstruation throughout gestation.
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