Catalog Search Results
Series
Pub. Date
[2009], c2009
Language
English
Description
Following an opening segment on the importance of oxygen to the human body, this program studies the structure and function of the respiratory system. Topics include the anatomy of the upper respiratory tract, the lower respiratory tract, and the alveoli; the diffusion of gas molecules through the walls of the alveoli and capillaries, and the effect of high altitude on the diffusion process; and the mechanics of breathing via the bulk flow transport...
Pub. Date
[2008], c2007
Language
English
Description
1.Facts of Life: This report on the "Y" chromosome reveals more than just its link to maleness. It illustrates the role of the "Y" in determining that only men are prone to certain diseases, and why it is only a small number of "Y" genes that seem to be responsible for a lot of "male" behavior. 2.Attack on the Clones: Human culture has been evolving for millennia, but at some point, genetic engineering could alter the species itself. This report studies...
Pub. Date
[2013], c2011
Language
English
Description
Before modern medicine, many mothers and their babies did not survive pregnancy and childbirth. Today, good prenatal care can significantly improve the quality of the pregnancy and the outcome for the baby and mother. Good prenatal care includes good nutrition and health habits before and during pregnancy, frequent prenatal exams, routine ultrasounds to detect problems with the baby, and routine screenings. The goals of prenatal care are to monitor...
Pub. Date
[2013], c2010
Language
English
Description
A woman describes her signs of labor. One first sign that labor is starting for her is the appearance of a small amount of pinkish mucus, sometimes called a bloody show. This sign is the discharge of the mucus plug that served as a barrier between the uterus and the vagina during the pregnancy. Shortly after the bloody show, the amniotic sac ruptured, an event commonly called the water breaking. The amniotic sac, which is filled with fluid, surrounds...
5) Early Labor
Pub. Date
[2013], c2010
Language
English
Description
A mother explains that after her membranes ruptured and her water broke, she began to experience the first phase of labor, or early labor. For her this first phase took about six hours, but the average time is variable, lasting from two to six hours. Rarely it can last up to 24 hours. During early labor, the pressure of repeated regular contractions causes the cervix, which is closed when labor begins, to open up to a diameter of 1.2 inches (3 centimeters)...
Pub. Date
[2009], c2001
Language
English
Description
A 21st-century remake of Miracle of Life, one of the most popular NOVA episodes of all time, this program uses high-tech methods to tell the inside-the-womb story of human life, from conception to birth. As in the original film, the program features the extraordinary work of Swedish photographer Lennart Nilsson-who improves on his earlier vision with sophisticated microscopy and high-tech medical imaging to reveal every hidden milestone in a baby's...
7) Birth
Pub. Date
[2013], c2010
Language
English
Description
The character Emily is a 7-year-old who learns that when the baby is ready to be born, the mother will start to feel labor contractions as her uterus begins to squeeze and push the baby out. It is a tight fit, but coming out does not hurt the baby.
Series
Language
English
Description
Although children 7 to 12 still need their physical safety and health protected, they also require strong role models, boundaries, and positive feedback to develop fully. This video will take the viewer through two stages: (1) middle childhood, when children build on what they learned in early childhood, and (2) early adolescence, when children begin to undergo the changes associated with puberty. During these years, children typically pull away from...
Series
Pub. Date
[2006], c2003
Language
English
Description
How far should people be allowed to go in trying to have better babies? And whose definition of "better" should prevail? This Fred Friendly Seminar moderated by Dateline NBC correspondent John Hockenberry considers the ethical dilemmas facing individuals and society that grow out of prenatal testing and genetic options that may be available in the future - such as cloning. Panelists include Francis Collins, director of the National Human Genome Research...
Pub. Date
[2013], c2010
Language
English
Description
Key male reproductive organs include the testes, urethra, vas deferens, prostate gland, seminal vesicles, and penis. The testes contain coiled structures called seminiferous tubules, which are the sites of sperm production. A woman's ovaries usually produce only one egg per month, while a man's seminiferous tubules produce more than 12 billion sperm per month. On top of the seminiferous tubules is the epididymis. The immature sperm migrate there to...
Pub. Date
[2013], c2010
Language
English
Description
From the earliest stages, a growing embryo requires nutrition, oxygen, and a disposal system for metabolic wastes and a way to prevent some harmful substances from getting into its blood stream. These requirements are met by the placenta and its blood barrier. Around day 8 of development the blastocyst, a hollow ball of cells, moves into the uterus. The blastocyst's outer layer begins to extend and it implants in the uterine lining, seeking uterine...
Pub. Date
[2013], c2010
Language
English
Description
Two things are needed to make a baby: a sperm cell and an egg cell. The father makes the sperm cell inside his body, and the mother makes the egg cell inside her body. The egg and sperm are small and can be seen only with a microscope, which is like a strong magnifying glass. When the egg and sperm join, they form a baby that is smaller than a grain of salt. The baby grows inside the mother's tummy in her uterus and then comes out as a baby brother...
Pub. Date
[2013], c2010
Language
English
Description
Twins are rare, occurring in about 1 percent of all pregnancies. Of that number, 30 percent are identical twins. The other 70 percent are nonidentical, or fraternal, twins. A single baby, identical twins, and fraternal twins differ from one another in their development. With a single baby, when fertilization occurs the egg cell is fertilized by a single sperm cell to form a zygote. Over the next few days, the fertilized egg cell divides repeatedly...
14) Egg Production
Pub. Date
[2013], c2010
Language
English
Description
Key female reproductive organs are the uterus, ovaries, fallopian tubes, and vagina. The ovary contains developing eggs called oocytes. At birth, all the eggs that a female will produce are inside the ovaries in an undeveloped form. Approximately once a month starting around age twelve, hormonal messages from the brain cause an egg to develop in the ovaries. Several hormones regulate the reproductive cycle. These include estrogen, progesterone, FSH...
Pub. Date
[2013], c2010
Language
English
Description
The placenta, which was the baby's lifeline over the nine months of the pregnancy, is pushed out of the uterus. The pushing is done by contractions, with some help from the doctor, who works the placenta free of the uterus by gently pressing on the mother's abdomen. This painless process takes about 15 minutes. Once the placenta is delivered, the doctor examines it to see whether it is healthy and in one piece. Sometimes the placenta can break off...
16) Vasectomy
Pub. Date
[2013], c2004
Language
English
Description
A vasectomy is a procedure to cause permanent sterility in a man by preventing the transport of sperm out of the testes. A small incision is made in the scrotum and each vas deferens is tied off and cut apart to prevent sperm from being released within the ejaculate. The small skin incision is stitched closed and the surgery does not affect a man's sexual function.
17) Vasectomy
Pub. Date
[2013], c2004
Language
Español
Description
A vasectomy is a procedure to cause permanent sterility in a man by preventing the transport of sperm out of the testes. A small incision is made in the scrotum and each vas deferens is tied off and cut apart to prevent sperm from being released within the ejaculate. The small skin incision is stitched closed and the surgery does not affect a man's sexual function.
18) Conception
Pub. Date
[2013], c2010
Language
English
Description
During intercourse, sperm are released into the vagina near the cervix, swim through the uterus, and travel up the fallopian tubes. Sperm are composed of three parts: a head, a middle section, and a tail. The tail propels the sperm, which is powered by energy cells stored in the middle section. The head of the sperm contains the man's genetic material and an enzyme-filled cap needed to help the sperm penetrate through the outer membrane of the egg....
Pub. Date
[2013], c2010
Language
English
Description
Male reproductive components are the testes, urethra, vas deferens, prostate, seminal vesicles, and penis. The testes are made up of seminiferous tubules, coiled structures where sperm production occurs. Sperm migrate to the epididymis, on top of the seminiferous tubules, where they mature and are stored. When the penis fills with blood and becomes erect, with sufficient stimulation an ejaculatory process begins. The mature sperm travel from the epididymis...
Pub. Date
[2013], c2010
Language
English
Description
Emily's mother explains that when the egg and sperm meet in the mother's fallopian tube, instructions for building a baby are contributed by the sperm. If the sperm is carrying an X, the baby will be a girl, and if it is carrying a Y, the baby will be a boy.
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