Eggs Sperm And Hormones Essay

594 words - 3 pages

Sperm is produced in the seminiferous tubules of the testes and are stored in the epididymis. (t From the epididymis the sperm travel along the vas deferens. Sperm then continue along the vas deferens and pass by the seminal vesicle and prostate where fluids are added. Eventually this mixture reaches the urethra, passing by Cowper's gland where more fluids are added, to be ejaculated out of the penis as semen. The fluids come from the prostate gland, and the seminal vesicle. Its purpose is to act as a transported for the sperm. It provides the sperm a way to move throughout the vagina.
The Ovarian cycle takes place in the ovaries. It is the normal cycle that includes development of an ovarian follicle, rupture of the follicle, discharge of the ovum, and formation and regression of a corpus luteum. The uterine cycle is the building up and ...view middle of the document...

LH levels rise during ovulation. This causes the egg in the ovary to complete Meiosis I. About two weeks later, LH levels rise; this sudden rise in LH triggers ovulation. FSH stimulates the follicle to secrete the hormone estrogen. It also helps regulate the menstrual cycle. Estrogen causes the uterine lining to thicken during the menstrual cycle in preparation for pregnancy. It stimulates the growth of breast tissue and helps maintains blood flow to the vagina. The main function of progesterone is to stimulate the growth of a cushion lining in the uterus where the fertilized egg can grow into a baby and help the breasts produce milk.
The placenta is vital in the nutrition of the fetus. It mediates the active transport of nutrients and metabolic wastes across the barrier separating maternal and fetal compartments. The function of the placenta is necessary for the growth of a healthy fetus. The umbilical cord is the connection between baby and mother. The placenta is the area in a pregnant woman's uterus that is the site of exchange of wastes and nutrients between mother and child.
If you have two dominant alleles, the dominant allele will be expressed. If you have one dominant allele and one recessive allele, then the dominant allele will still be expressed. If you have two recessive alleles, then the recessive will be expressed. sex-linked inheritance is the inheritance of genes located on gender-determinating chromosomes(X and Y). There are many other not sex related genes that are on the X chromosome but not on the Y. So if you are a male, any sex-linked trait you have must have been given to you by your mother, since your father can only give you a Y.



Other Essays Like Eggs Sperm and Hormones

The Sperm and the Egg Essay

517 words - 3 pages The Sperm and the Egg   The reproductive system is responsible for the creation of new life. Humans have sexual intercourse and reproduce.. This means that a male and female come together to form a new baby. There is a lot of different processes that it takes for sperm and an egg to fertilize. The life span of a female’s egg typically is about 24 hours. The life span of sperm is about 72 hours. The sperm may not be active but can

Sperm Selection After Mating Essay

1032 words - 5 pages A Bit of Background Information What is pre- and post-copulatory sexual selection? From the word copulatory, meaning to engage in sexual intercourse, pre-copulatory sexual selection refers to the female's choice in selecting a mate before sexual intercourse takes place. Post-copulatory sexual selection occurs within the female's reproductive track, and it describes the biological selection (whether due to sperm or the female's biology

A&P Review

1648 words - 7 pages adenohypophysis to release *Adrenocorticotropic hormone (ACTH) -stimulates adrenal cortex to secrete glucocorticoids -all the cortex hormones * Gonadotropin-releasing hormone - 10 aa peptide – releases *FSH (follicle stimulating hormone) ~stimulates secretion of ovarian sex hormones, ~ development of ovarian follicles, and sperm production *LH (luteinizing hormone) ~stimulates ovulation, stimulates corpus luteum to secrete progesterone

The major function of the reproductive system

4271 words - 18 pages reproductive system has four functions: | |To produce egg and sperm cells o To transport and sustain these cells o To nurture the developing offspring o To produce hormones These functions are divided between the primary and secondary, or accessory, reproductive organs. The primary reproductive organs, or gonads, consist of the ovaries and testes. These organs are responsible for producing the egg and sperm cells

Development Through the Life Stages

2420 words - 10 pages miscarriages and pregnancy complications with age. The menopause involves the ending of having periods and a large reduction in the number of eggs in the ovary. There is also a reduction in sex hormones which could result in reduction of sexual organs and sometimes in sexual interest. Old age Older adults often put on weight. This may happen because they eat the same amount of food as they did before but because there are getting older they may not

Heredity Is Defined as the Transmission of Genetic

2192 words - 9 pages maintain the sperm (these are the male reproductive cells) and also included are the semen, which is the protective fluid. Another function for the male reproductive organs is to discharge the male reproductive cells into the female reproductive tract. They also secrete and produce male sex hormones. The female anatomical structure is more complicated than the males’. There are many distinct anatomical structures comprising both internal and

Endocrine System

1254 words - 6 pages Lecture: The Endocrine System The endocrine system is a chemical control system. It functions in conjunction with the nervous system to control the internal environment (homeostasis). I. Endocrine Glands A. Glands without ducts 1. Secrete HORMONES ("to set in motion") into the intercellular spaces and they pass directly into the blood and is then distributed to all parts of the body via the circulatory system

Sexual Education

2200 words - 9 pages objects that hang below on both sides of the penis. They serve two purposes, one is to produce hormones and the other is to produce sperm (Gordon and Laufer, 2005). Sperm is the reproductive cell in males as eggs are the reproductive cell in females. The next sign of puberty is pubic hair, which is first visible at the bottom of the penis. In the months following the appearance of pubic hair, you will see hair under the arms, upper lip and on the

P1: Describe Physical, Intellectual, Emotional and Social Development for Each of the Life Stages of an Individual

763 words - 4 pages . Fertilisation means that the genetic material in the sperm joins with the genetic material in the egg to start a new life. Only about half of all fertilised eggs develop to become babies. Many eggs are lost without a woman knowing that fertilisation ever happened. Intellectual = N/A Emotional = N/A Social = N/A Pregnancy and birth Physical = pregnancy begins when a sperm penetrates an egg. One to one and a half days later, the single

Animal Characeteristics

1956 words - 8 pages Hermaphroditic: An animal or plant exhibiting hermaphroditism, an individual has both female and male gonads, functions as both in sexual reproduction by producing both sperm and eggs Cephalization: An evolutionary trend toward concentration of the nervous system at the head end Cerebral ganglia: Ganglia perform the role of a brain in some animals-arthropods and worms are two examples. They are masses of nerve tissue joined to various nerves and other

Obesity an American Epidemic

1905 words - 8 pages increase DHEA production eat vegetables, fruits, poultry, eggs and saturated fats such as butter. Sugar, sweets, alcohol, margarine, coffee, white bread, soy and pasta will help to decrease DHEA production. Female sex hormones, estrogen and progesterone are produced in both men and women. Estrogen stimulates the sympathetic nervous system, increases alertness, lowers body fat, protects against heart and Alzheimer’s disease, increases insulin

Related Papers

Different Contreceptives Essay

831 words - 4 pages Pill also works by thickening the mucus around the cervix, which makes it difficult for sperm to enter the uterus and reach any eggs that may have been released. The hormones in the Pill can also sometimes affect the lining of the uterus, making it difficult for an egg to attach to the wall of the uterus. Mini pills are almost the same but the only release progesterone. This progesterone works by thickening the mucus around the cervix and making it

Different Contreception Essay

831 words - 4 pages Pill also works by thickening the mucus around the cervix, which makes it difficult for sperm to enter the uterus and reach any eggs that may have been released. The hormones in the Pill can also sometimes affect the lining of the uterus, making it difficult for an egg to attach to the wall of the uterus. Mini pills are almost the same but the only release progesterone. This progesterone works by thickening the mucus around the cervix and making it

The Miracle Of Life Essay

628 words - 3 pages from fallopian tube into the uterus. It also reveals the importance of female sex hormones in regulating the woman’s reproductive cycle during the process of ovulation. In addition, the film switches to male reproductive system through diagram illustrations of vital organs. The process through which the sperms are formed in the testicles, the role of prostate gland in producing seminal fluid, and the combination of seminal fluid with sperm, as well

Unit 5 Animal Kingdom Taxonomy Chart Biolgy Lab

966 words - 4 pages (eggs, seeds, spores, placenta, and type of fertilization)? Sexual: Eggs; internal Sexual: Placental, in-uterus development (internal). Sexual: Alternation of generations. Must be in a moist area for the sperm to swim to the egg. Sexual: Alternation of generations. Pollen is the male sex cell. Sexual: Alternation of generations. Pollen is the male sex cell Excretory System How does the organism get rid of waste and maintain an ionic balance of