-
The muscular, baglike organ attached to the lower end of the esophagus that continues the physical digestion of a meal is called...
stomach
-
What kind of digestion does your stomach perform?
chemical and mechanical digestion
-
What is linked to the small intestine, but does not move food through it?
gallbladder
-
What organ of the digestive system stores, compacts, and then eliminates indigestible material from the body?
large intestine
-
What is the path of sperm?
testes....epidiymis....vas deferens....urethra
-
If the first day of the menstual cycle is the onset of menstration, on what day does ovulation occur?
14
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Name sexually transmitted diseases.
chlamydia, AIDS, genital herpes
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Fertilization occurs in the _____ and implantation occurs in the _____.
fallopian tube, uterus
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NOT a sexually transmitted disease....
infertility
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The process of ovulation in humans....
begins at puberty
-
-
Beginning in the 4th week, a developing human has....
heart beat
-
As soon as menstruation is over, the uteris prepares for....
ovulation
-
In sexual reproduction, the female parent produces sex cells called....
eggs
-
The male parent produces sex cells called....
sperm
-
When an egg's nucleus joins with a sperm's nucleus, a new kind of cell is created called...
zygote
-
Human cells contain how many chromosomes?
46
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Eggs and sperm contain _____ chromosomes.
23
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In humans, meiosis, creation of sex cells involves the division of one cell with 46 chromosomes into 4 sex cells with ______ chromosomes each.
11 or 12
-
What animal reproduces by external ferilization in water?
a frog
-
-
What makes sperm and testosterone?
testes
-
The principal male sex hormone is ....
testosterone
-
The skin covered sac that hangs from a male body is called the...
scrotum
-
A healthy adult male produces several hundred million _____ each day.
sperm
-
What is the time of life when the sex organs of both males and females become mature?
Puberty
-
As sperm swim through the vas deferns, they mix with fluids from several glands, creating a mixture called....
semen
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To leave the body, semen passes through the vas deferens into the _____, a tube that runs through the penis.
urethra
-
The ______ transfers semen into the female's body during sexual intercourse.
penis
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In the female reproductive system, the ______ produces the eggs.
ovaries
-
The 2 ovaries produce sex hormones, such as________ that regulate the release of eggs and direct the development of female characteristics.
estrogen and progesterone
-
An ovary contains....
many eggs, each as the same stage of development
-
During ______, an egg is ejected through the ovary wall.
ovulation
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The _____ leads from each ovary to the uterus.
fallopian tube
-
The ______ is the organ where a baby grows and develops.
uterus
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Every month starting at _______, the lining of the uterus thickens in preparation for pregnancy.
menstruation
-
____ is the monthly discharge of blood and tissue from the uterus.
menstruation
-
What happens to an egg if it is not fertilized?
It is removed through menstruation.
-
The egg is fertilized in the....
fallopian tube
-
The ____ contains a network of blood vessels that provide the embryo with oxygen and nutrients from the mother's blood.
umbilical cord
-
The ____ connects the embryo to the placenta.
umbilical cord
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