Only one sperm is needed to fertilize an egg, yet a man who ejaculates fewer than 10 million sperm is usually infertile. Explain this apparent contradiction. Supposing 10 million sperm were ejaculated, predict how many would come with close range of the egg. How likely is it that any one sperm would fertilize it?

Q: The head of a sperm contains a haploid nucleus with 23 chromosomes. True False

A: Sperm is produced by the male reproductive system in the seminiferous-tubules present in both…

Q: Identify the incorrect statement about the female reproductive system?  (A) granulosa cells produce…

A: The female reproductive system consists of internal and external sex organs. The internal organs are…

Q: hormonal birth control in humans is very effective, and is also reversible.  Briefly explain how it…

A: Any means of preventing pregnancy is referred to as birth control. Condoms, IUDs, birth control…

Q: Rat Testis sample   -Basement membrane / basal lamina (same thing) -Sertoli celland nucleus…

A: Testes are the main organ of the male reproductive system that consists of major parts that help in…

Q: The average sperm count in males is now lower than it was several decades ago. The reasons for the…

A: In recent times the average sperm count in males has halved from what was existent in earlier times.…

Q: What are the clinical uses of conbined oral contraceptive pills other than prevent fertilization and…

A: The birth control pills are the pills which helps to prevent the unwanted or unexpected pregnancy.…

Q: Watch this series of videos (http://openstaxcollege.org/l/oocyte) to look at the movement of the…

A: The female reproductive system consists of internal organs and external genital structures. The…

Q: The cervical plug forms a physical barrier that blocks the passage of sperm into the uterus. With…

A: The menstrual cycle occurs in the females of humans and other primate animals. It has different…

Q: The increased membrane fluidity has been attributed to the efflux (removal) of a single membrane…

A: The sperm cell or spermatozoa is the male gamete that fertilizes the female gamete to form the…

Q: Darcy and Raul are having difficulty conceiving a child. Darcy ovulates every 28 days, and Raul’s…

A: The fusion of the haploid gametes sperm and Egg is defined as the fertilization. This fertilization…

Q: h this drug accomplishes this? What hormone is primarily responsible for the Graafian follicle…

A: Anterior pituitary gland secretes two female reproductive hormones namely follicular stimulating…

Q: Human testes cannot produce sperm at 37 degrees C (body temperature), but must be held at The…

A: Human testes cannot produce sperm at 37 degrees Celsius (body temperature), but must be held at…

Q: Which of the following statements does NOT correctly describe the similarities and differences…

A: The system involved in the process of generating viable offsprings is called the reproductive…

Q: What barriers must a sperm cross in order to fuse with the egg? How does the sperm accomplish this…

A: The union of two haploid gametes, the spermatozoa and the oocyte, hereafter referred to as the egg,…

Q: An oocyte lives for only 24 hours after ovulation if it is not fertilized. The trip down the uterine…

A: The Fallopian tube serve as the site for fertilization. Fertilization specifically occur in the…

Q: OPU can be done in cows every 3-4 days to obtain oocytes/eggs in the absence of ovarian…

A: Ovum pick up (OPU) is the interaction by which oocytes (egg cells) are suctioned from the follicles…

Q: Before ejaculation, sperm are stored primarily in

A: Sperms are male gametes that help produce the zygote during the fertilization process. It plays a…

Q: For the following illustration of an anterior view of the human female reproductive system: G. for…

A: Female reproductive system consists of internal and external sex organs. They together function to…

Q: Only one spermatozoa is required to fertilize an ovum yet millions to billions of sperm are…

A: Reproductive system is a type of body system that mainly involved in fusion of male and female…

Q: Select ALL that are TRUE about sperm: Meiosis is suspended twice in sperm development; meiosis of…

A: Sperm is the form of male gamete in anisogamous mode of sexual reproduction. Generally in higher…

Q: oung married couple had been trying to conceive a baby for 2 years without success. The husband has…

A: Ovulation is the process when an egg is released from ovary, so this egg is waiting for any sperm to…

Q: Draw or sketch a diagram of the internal structures of the ovary as how it would be seen under a…

A: The ovaries form part of the female reproductive system and attach to the fallopian tubes. They are…

Q: The sperm swim/propel themselves using their flagella from the epididymis to the body's exterior…

A: The sperm swim by means of a prominent flagellum which is composed of a core of microtubules, whose…

Q: Oestrogen, follicle-stimulating hormone (FSH) and luteinising hormone (LH) works together to…

A: The endocrine system collaborates with the neurological system to keep the body in a state of…

Q: Describe, with the aid of a diagram, the differentiation of the indifferent gonad into a testis.

A: The undifferentiated gonad has the capacity to transform into either a testis or an ovary during…