Anatomy essay

anatomy essay

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He had played war games up until the age of sixteen and after that he commanded his army like they had been a game. Taking risks with soldiers as well as ignoring precise information that would have been critical to his plans; and also the ignorance of British and us tolerance. He was a psychotic man who is a very good example of how far a man with destructive purpose can rise. Trying to explain aggressive behavior, there is focus on a core issue, instincts. Going through animal behavior and comparing it with human behavior and how similar our instincts are. There is also focus on examining primitive tribes. The object of these findings were to find out how warlike the tribes are. In the hunting-gatherers tribes, war is not as popular and profitable as in modern society.

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The sperm that arrive first on the now scene help break down the outer layer of the egg, so other sperm can penetrate it; only one sperm is allowed in, after report that there is an electrical event called the fast block to polyspermy. Then when the 2 pron. The Anatomy Of Human Destructiveness Essay, research Paper. An essay on The Anatomy of Human Destructiveness by Erich Fromm. Amount of pages: 478. The book goes on in explaining the ways of aggression and how it reaches into man. Citing aggressive examples in the behavior of necrophilics and Hitler. The author goes into the early life of Hitler and his parents. How it had effect on what he became and his destructive way of life. He was a man that laid half way between reality and his fantasy.

The uterine (menstrual) cycle is a series of cyclic changes that the uterine endometrium goes through each month as it responds to changing levels of ovarian hormones in the blood. Day 1-5, menstrual phase (shedding of endometrium day 6-14, proliferative phase (the endometrium rebuilds itself day 15-28 secretory phase (the endometrium prepares for implantation). For fertilization, sperm must reach an oocyte, which is viable for 12 to 24 hours after reviews it is cast out of the ovary. Most sperm retain their fertilizing power for 24 to 72 hours after ejaculation. For fertilization to occur, sex or coitus must occur no more than five days before ovulation or no later than 24 hours after. Fertilization occurs when a sperm fuses with an egg to form a fertilized egg or zygote. Sperm freshly deposited in the vagina are incapable of penetrating a oocyte. They must first be capaciated (their membranes must become fragile so that the hydrolytic enzymes in their acrosomes can be released).

anatomy essay

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Medical records reveal that this painful disfiguring treatment is no more effective at halting the cancer than less extensive surgery. Most physicians now recommend lumpectomy, in which only the cancerous part is excised, or a owl simple mastectomy, removal of the breast tissue only. Many mastectomy patients opt for breast reconstruction to replace the excised tissue. Silicone gel implants were initially used, but they have been banned by the fda. Currently tissue flaps, containing muscle, fat, skin taken from the patients abdomen or back, are providing acceptable alternatives for sculpting a natural looking breast. ) June 1, summary 1999 Female cycles fertilization The monthly series of events associated with the maturation of an egg is called the ovarian cycle. It has 2 phases: Follicular phase the period of follicle growth. Luteal phase ovulation occurs.

Some 10 of breast cancers stem from hereditary defects half of these can be traced to dangerous mutations in a pair of genes, dubbed brca1 brca2, which virtually guarantee that the carriers will develop breast cancer. However, more than 70 of women who develop breast cancer have no known risk factors for the disease. Breast cancer is often signaled by a change texture, puckering, or leakage from the nipple. Early detection by breast self-examination mammography is unquestionably the best way to increase ones chances of surviving breast cancer. Simple self-examinations should be health maintenance priority in every womens life. The American Cancer Society recommends scheduling mammography, x-ray examinations that detects breast cancers too small to feel, every two years for women between 40 to 49 years old yearly thereafter. Once diagnosed, breast cancer is treated in various ways: Radiation therapy. Surgery, often followed by irradiation or chemotherapy, to destroy stray cancer cells. Radical mastectomy is the removal of the entire affected breast, plus all underlying muscles, fascia, associated lymph nodes.

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anatomy essay

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In non-pregnant women, the grandular structure of the breast is largely undeveloped the duct system is rudimentary; hence, breast size is largely due to the amount of fat deposits. Breast Cancer Invasive breast cancer, the most common malignancy of us women, strikes about 180,000 American women each year. One in eight writing women will develop this condition. Breast cancer usually arises from bibliography the epithelial cells of the ducts, not from the alveoli. A small cluster of cancer cells grows into a lump in the breast from which cells eventually metastasize. Known risk factors for developing breast cancer include: Early onset menses late menopause.

No pregnancies or first pregnancy later in life. Previous history of breast cancer. Family history of breast cancer (especially sister or mother). Other risk factors proposed but as yet unproved include: Silicone breast implants. Exposure to high estrogen concentrations while in utero post-menopause. Cigarette smoking excessive alcohol intake.

The mammary Glands The mammary glands are present in both sexes, but they normally function only in females. Since the biological role of the mammary glands is to produce milk to nourish a newborn baby, they are actually important when reproduction has already been accomplished. Developmentally, the mammary glands are modified sweat glands that are really part of the skin, or integumentary system. Each mammary gland is contained within a rounded skin-covered breast anterior to the pectoral muscles of the thorax. Slightly below the center of each breast is a ring of pigmented skin, the areola, which surrounds a central protruding nipple. Large sebaceous glands in the areola make it slightly bumpy produce sebum that reduces chapping cracking of the skin of the nipple.


Autonomic nervous system controls of smooth muscle fibers in the areola nipple cause the nipple cause the nipple to become erect when stimulated by tactile or sexual stimuli when exposed to the cold. Internally, each mammary gland consists of 15 to 25 lobes that radiate around open at the nipple. The lobes are padded separated from each other by fibrous connective tissue fat. The interlobular connective tissue forms suspensory ligaments that attach the breast to the underlying muscle fascia to the overlying dermis. As suggested by their name, the suspensory ligaments provide natural support for the breast, like a built-in brassiere. Within the lobes are smaller units called lobules, which contain grandular alveoli that produce milk when a woman is lactating. These compound alveolar glands pass the milk into the lactiferous ducts, which open to the outside at the nipple. Just deep to the areola, each lactiferous duct has a dilated region called a lactiferous sinus. Milk accumulates in these sinuses during nursing.

Anatomy and Physiology of the heart - 3417 Palabras

These glands release mucus into the vestibule help to keep it moist lubricated, facilitating intercourse. Just entry anterior to the vestibule is the clitoris, a small, protruding structure, composed largely of erectile tissue, that is homologous to the penis of the male. It is hooded by a skin fold called the prepuce of the clitoris, formed by the junction of the labia minora folds. The clitoris is richly innervated with sensory nerve endings sensitive to touch, it becomes swollen with blood erect during tactile stimulation, contributing to a females sexual arousal. The clitoris has dorsal erectile columns; but it lacks a corpus spongiosum. The female urinary reproductive tracts are completely separate, neither runs through the clitoris. The female perineum is a diamond-shaped region located between the pubic arch anteriorly, the coccyx posteriorly, the ischial tuberosities laterally. The soft tissues of the perineum overlie the muscles of the pelvic outlet the posterior ends of the labia majora overlie the central tendon, into which most muscles supporting the pelvic floor insert.

anatomy essay

The mons pubis is a fatty, rounded area overlying the pubic symphysis. After puberty, this area is covered with pubic hair. Running posteriorly from the mons pubis are two elongated, hair-covered fatty skin folds, the labia majora. These are the female counterpart of the male scrotum. The labia majora enclose the labia minora, two thin, hair-free skin folds, homologous to the ventral penis. The labia minora enclose a recess called the vestibule, which contains the external opening of the urethra sonnet more anteriorly followed by that of the vagina. Flanking the vaginal opening are pea-sized greater vestibular glands, homologous to the bulbourethral glands of the males.

the cervix of the uterus, producing a vaginal recess called the vagina fornix. The posterior part of this recess, the posterior fornix, is much deeper than the lateral anterior fornices. Generally, the lumen of the vagina is quite small, except where it is held open by the cervix, its posterior anterior walls are in contact with one another. The vagina stretches considerably during copulation childbirth, but its lateral distension by the ischial spines the sacrospinous ligaments. The uterus tilts away from the vagina. Hence, attempts by untrained persons to induce an abortion by entering the uterus with a surgical instrument may result in puncturing of the posterior wall of the vagina, followed by hemorrhage if the instrument is unsterile subsequent peritonitis. The External Genitalia the external genitalia, also called the vulva or pudendum, include the: M0ns, pubis. Structures associated with the vestibule.

The vaginal mucosa has no glands; it is lubricated by the cervical mucous glands. Its epithelial cells release large amounts of glycogen, which is anaerobically metabolized to lactic acid by resident bacteria. Consequently, the pH of a womans vagina is normally quite acidic. This acidity helps keep the vagina healthy free of infection, but it is also hostile to sperm. Although vaginal fluid gender of adult woman is acidic, it tends to be alkaline in adolescents, predisposing sexually active teenagers to sexually transmitted diseases. In virgins, the mucosa near the distal vaginal orifice forms an incomplete partition called the hymen. The hymen is very vascular tends to bleed when it is ruptured during the first coitus (sexual intercourse). However, its durability varies.

Plant anatomy essay questions

Female, anatomy, essay, research, paper, the vagina, the vagina is a thin walled-tube, 8 to 10 cm long. It lies between the bladder the rectum extends from the cervix to the body exterior. The urethra is embedded in its anterior wall. Often called the birth canal, the vagina provides a passageway for delivery of an infant for menstrual guaranteed flow. Since it receives the penis ( semen) during sexual intercourse, it is the female organ of copulation. The highly distensible wall of the vagina wall consists of three coats: An outer fibroelastic adventitia. A mucosa marked by transverse ridges or rugae, which stimulate the penis during intercourse. The epithelium of the mucosa is a stratified squamous epithelium adapted to stand up to friction. Certain of the mucosal cells act as antigen-presenting cells are thought the route of hiv transmission from an infected male to the female during intercourse.


Anatomy essay
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