If human fetus were exposed to very low levels of both testosterone and estrogen during prenatal development, how would the sexual anatomy appear? Why?
Q: After fertilization the blastocyst develops three germ layers. Which germ layer is the innermost…
A: In the human embryo , after about three days of fertilisation,the zygote forms a solid mass of cells…
Q: Why does the body show sexual maturation at the age of puberty?
A: The capability of an organism to reproduce is known as sexual maturity. All organisms are not…
Q: Describe the internal structure of a testis. Where are sperm cells produced? What are the functions…
A: BASIC INFORMATION MALE REPRODUCTIVE SYSTEM It includes different organs namely; Scrotum, Spermatic…
Q: How many days after ovulation does implantation occur, and inwhat stage is the conceptus at that…
A: Implantation is the stage when the embryo adheres to the uterine wall after fertilization. Ovulation…
Q: Identify the structures involved in sperm development and ejaculation.
A: The reproductive arrangement of an organic entity, otherwise called the genital framework, is the…
Q: Explain why there is a high level of estrogen and progesterone once in every 28-day uterine cycle of…
A: Menstruation is a complicated mechanism that occurs in every female for about 28 days after puberty.…
Q: Name the phase in the menstural cycle in which the remnant of follicle in the ovary turns into…
A: The menstrual cycle is a very complex mechanism in female reproductive system and is controlled by…
Q: Which structures in males are homologous to the ovaries, the clitoris, the paraurethral glands, and…
A: The testes are homologous to the ovaries;
Q: Name the site of maturation of human sperms.
A: Gametes are haploid cells, which, on fusion, form a diploid zygote. Spermatogenesis is the process…
Q: In cryptorchidism, one or both testes of an infant have not descended into the scrotal sac by the…
A: Cryptorchidism is the absence of testes (one or both) from the scrotum. It is a common birth defect…
Q: Explain how the female hormones GnRH, FSH, LH, and estrogen interact during the menstrual cycle to…
A: Menstrual cycle is a regular and natural change occurring in the reproductive system of females.…
Q: The first structure that spermatogonia must pass through is the: a. seminiferous tubule b.…
A: The process by which the germ cells in the male gonads called the testis divide and form haploid…
Q: Why are the males whose testes fail to descend to the scrotum considered infertile?
A: Testes are also known as testicles and they are a pair of sperms producing organs which helps in…
Q: To which structures do the mesovarium, ovarian ligament, and suspensory ligament anchor the ovary?
A: The female gonad that lies in pair along either side of the uterus in the female body's pelvic…
Q: When an ovum gets fertilised, menstural cycle stops temporarily in a woman?
A: Every month the inner lining of the uterus known as endometrial layer degenerates following the…
Q: What are the different parts of a sperm? Explain their importance in fertilization.
A: Reproduction is an essential process in the sustenance of organisms. The male and female gametes…
Q: Implantation occurs in what structure of the female reproductive system?
A: In human beings, the process of implantation is the stage of the pregnancy where the developing…
Q: What are the stages of oogenesis? Describe all the ways in which it differs from spermatogenesis ?
A: Introduction: The process of formation of the egg cells in the ovaries of the fetus is known as…
Q: Name two types of cells in the testis other than the germ cells, and describe their locations and…
A: Ans: Testis: It is the male reproductive gonad or glands which is involved in the production of the…
Q: Describe spermatogenesis
A: Spermatogenesis is a process to develop the male gametes called sperm. This process occurs within…
Q: Name the hormones involved in regulation of spermatogenesis.
A: Spermatogenesis is the process of the formation of sperm cells. It begins when the spermatogonia…
Q: Describe the attachments of the ovary
A: Ans: Ovary: It is the main part of the female reproductive system which is responsible for producing…
Q: What is spermatogenesis? Briefly describe the process of spermatogenesis.
A: The testes is the male reproductive organ which produces sperm and the male sex hormone. Sperm is…
Q: Name the process of fusion of ovum and sperm.
A: Reproduction is the process by which the organisms propagate their species by the union of the male…
Q: What are the functions performed by the testis in human beings?
A: Reproduction is a biological process, which ensures the continuation of species. The human male…
Q: Why testes of human males are considered extra abdominal? What is the significance of this…
A: The male reproductive system of humans is a group of inter associated organs, which help in the…
Q: Name the canal through which the testis descend into scrotum just before the birth.
A: Testes are the primary organs of human males. They are the site for the production of sperms and…
Q: Implantation of a blastocyst does not always happen. Approximately how many days after…
A: Fertilization of the secondary oocyte in the oviduct forms zygote which in turn divides by cleavage.…
Q: How will the feedback mechanism in the menstrual cycle responds if there is a high level of…
A: A feedback mechanism or feedback loop is a physiological regulation system in a living body that…
Q: List three ways in which oogenesis differs from spermatogenesis. Be specific!
A: Spermatogenesis and oogenesis are the processes of the formation of male and female gametes.…
Q: Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the…
A: Fertilization is a process in which male and female gametes fuse to form a zygote. This zygote…
Q: How many follicles mature every month during the reproductive phase of human female?
A: The reproductive phase is a period when an individual reproduces sexually. It begins at an early…
Q: A mature follicle releases an ovum in response to a surge in A) follicle-stimulating hormone. B)…
A: Ovulation is the process of releasing secondary oocyte in the fallopian tube from the ovary.
Q: Describe the pre- and post- ovulation events of the menstrual cycle. How is menstruation prevented…
A: Menstruation cycle is the part of the female reproductive cycle. It's a series of events which takes…
Q: If the testes do not descend into the scrotum, a man will not be able to father any child. Explain…
A: Reproduction is the process of producing new individuals of the same species. It is broadly…
Q: Which hormone causes the regrowth of the endometrial lining of the uterus? a. testosterone b.…
A: The endometrium is one of the stars of the female reproductive system, playing the important roles…
Q: Does the male gonad secrete something that affects male differentiation? In this experiment, the…
A: The gonads, the first reproductive organs, are the testes within the male and therefore the ovaries…
Q: Why are male testes located outside the abdominal cavity?
A: Testis are the primary male gonads in human. The sperm production is carried out in testes. There…
Q: What are the functions of the INTERSTITIAL CELLS and SERTOLI CELLS in sperm development?
A: In males the testis is the primary sex organ in which two major types of cells are present that are…
Q: Why does puberty occur too late or too early in some individuals?
A: Puberty is a crucial stage in human development, marking the transition from childhood to adulthood.…
Q: Describe the development of an oocyte from primordial follicle to when it is released at ovulation.…
A: Introduction Life starts from a single cell called Zygote. A zygote is formed by the fusion of the…
Q: Write two major functions each of testis and ovary.
A: The reproductive system of an organism is also known as the genital system. It is the biological…
Q: According to biological theorists, what are the things that affect ejaculation ?
A: Ejaculation is the process of release of semen (containing sperm) from the penis. Sperm produced in…
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- If fertilization occurs, the corpus luteum continues to produce hormones under the direction of Human Chorionic Gonadotrophin (HCG), which is produced by the embryo. By the third month, what begins to produce estradiol and progesterone?Compare oogenesis to spermatogenesis. How are the two processes similar? How do they differ? (Consider both follicle and sperm structure throughout development as well as the timing of the stages.)A baby’s gender is determined at conception, and the different genitalia of male and female fetuses develop from the same tissues in the embryo. View this animation (http://openstaxcollege.org/l/fetus) that compares thedevelopment of structures of the female and male reproductive systems in a growing fetus. Where are the testes located for most of gestational time?
- List three ways in which oogenesis differs from spermatogenesis. Be specific!Describe the development of reproductive organs in a fetus of each gender. Which genes, gene products, and hormones are involved in the sex differences? Which sex- related hormones are circulating in high concentrations in a pregnant woman compared to a nonpregnant woman? Do these hormones cross the placenta (if you are uncertain, consider hormone chemical class relative to membrane permeability to make an educated guess)? Assuming these hormones do cross the placenta, how do they affect the hormonal environment inside the fetus, and how does this relate to fetal reproductive development?Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?
- Implantation of a blastocyst does not always happen. Approximately how many days after fertilization may implantation of a blastocyst occur?Select the conditions that would be present in a genetic male fetushaving a mutation that causes the synthesis of an ineffective müllerian-inhibiting hormone.(1) Male internal reproductive structures develop.(2) Male internal reproductive structures do not develop.(3) Female internal reproductive structures develop.(4) Female internal reproductive structures do not develop.(5) Male external genitalia develop.(6) Female external genitalia develop.a. 2,4,6b. 1,3,5c. 1,2,6d. 2,3,5Darcy and Raul are having difficulty conceiving a child. Darcy ovulates every 28 days, and Raul’s sperm count is normal. If we could observe Raul’s sperm about an hour after ejaculation, however, we’d see that they appear to be moving only sluggishly. When Raul’s sperm eventually encounter Darcy’s oocyte, they appear to be incapable of generating an adequate acrosomal reaction. Which process has probably gone wrong?
- How would the failure to produce müllerian-inhibiting hormone affect thedevelopment of the internal reproductive system and external genitaliain a male embryo?If one follows 50 primary oocytes in an animal through theirvarious stages of oogenesis, how many secondary oocytes wouldbe formed? How many first polar bodies would be formed? Howmany ootids would be formed? If one follows 50 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would beformed? How many spermatids would be formed?During human gestation, rudiments of all organs develop (A) in the first trimester. (B) in the second trimester. (C) in the third trimester. (D) during the blastocyst stage.
