Contraception

Jun 17, 2017 by in NURSING Comments Off on Contraception

The risk of pregnancy without contraception is 2–4% for each unprotected act of intercourse. In 100 women using no contraception, 85 pregnancies occur per year. Approximately half of all pregnancies…

read more

Menopause

Jun 17, 2017 by in NURSING Comments Off on Menopause

Menopause is a normal stage of life. Its health consequences have only become apparent as life expectancy has increased well beyond the 6th decade of life for women. It is…

read more

Microscopic anatomy of the female reproductive tract

Jun 17, 2017 by in NURSING Comments Off on Microscopic anatomy of the female reproductive tract

Ovary The ovary has two distinct functions: germ cell production and steroid hormone biosynthesis. Germ cell support occurs in microscopic structures known as ovarian follicles. Resting follicles each contain a…

read more

The breast and lactation

Jun 17, 2017 by in NURSING Comments Off on The breast and lactation

Development of the breast The human mammary gland is derived from ectoderm. It is first visible in the 4-week embryo as a bud or nodule of epithelial tissue appearing along…

read more

Maternal adaptations to pregnancy: II

Jun 17, 2017 by in NURSING Comments Off on Maternal adaptations to pregnancy: II

Thyroid gland Maternal thyroid hormone is critical for normal embryonic and fetal development. Among the hepatic proteins stimulated by the elevated circulating levels of estrogen in pregnancy is thyroid-binding globulin…

read more

Reproductive genetics

Jun 17, 2017 by in NURSING Comments Off on Reproductive genetics

Chromosomes Human chromosomes are complex structures consisting of deoxyribonucleic acid (DNA), ribonucleic acid (RNA) and protein. Each single helix of DNA is bound at each end with a telomere and…

read more

Fertilization and the establishment of pregnancy

Jun 17, 2017 by in NURSING Comments Off on Fertilization and the establishment of pregnancy

The egg At ovulation, the egg is arrested in metaphase of the second meiotic division (Chapter 4). It is surrounded by a proteinaceous sphere called the zona pellucida. Those granulosa…

read more

Human sexual response

Jun 17, 2017 by in NURSING Comments Off on Human sexual response

Successful reproduction is the ultimate definition of evolutionary fitness. Because fertilization occurs within the reproductive tract of humans, intimate contact between male and female is necessary for spontaneous conception to…

read more

The menstrual cycle

Jun 17, 2017 by in NURSING Comments Off on The menstrual cycle

Gametogenesis and steroidogenesis proceed in a continuous fashion in the postpubertal human male. In contrast, the postpubertal human female exhibits repetitive cyclic changes in the hypothalamic–pituitary–ovarian axis that allow: (i)…

read more

Male reproductive physiology

Jun 17, 2017 by in NURSING Comments Off on Male reproductive physiology

Erection, emission and ejaculation An erection is a complex neuropsychologic event. It occurs when blood rapidly flows into the penis and becomes trapped in its spongy chambers. The three systems…

read more
Get Clinical Tree app for offline access