Science Final Exam 2
Card Set Information
Science Final Exam 2
Science Notes 2
The muscular, baglike organ attached to the lower end of the esophagus that continues the physical digestion of a meal is called...
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?
What organ of the digestive system stores, compacts, and then eliminates indigestible material from the body?
What is the path of sperm?
If the first day of the menstual cycle is the onset of menstration, on what day does ovulation occur?
Name sexually transmitted diseases.
chlamydia, AIDS, genital herpes
Fertilization occurs in the _____ and implantation occurs in the _____.
fallopian tube, uterus
NOT a sexually transmitted disease....
The process of ovulation in humans....
begins at puberty
Beginning in the 4th week, a developing human has....
As soon as menstruation is over, the uteris prepares for....
In sexual reproduction, the female parent produces sex cells called....
The male parent produces sex cells called....
When an egg's nucleus joins with a sperm's nucleus, a new kind of cell is created called...
Human cells contain how many chromosomes?
Eggs and sperm contain _____ chromosomes.
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?
What makes sperm
What makes sperm and testosterone?
The principal male sex hormone is ....
The skin covered sac that hangs from a male body is called the...
A healthy adult male produces several hundred million _____ each day.
What is the time of life when the sex organs of both males and females become mature?
As sperm swim through the vas deferns, they mix with fluids from several glands, creating a mixture called....
To leave the body, semen passes through the vas deferens into the _____, a tube that runs through the penis.
The ______ transfers semen into the female's body during sexual intercourse.
In the female reproductive system, the ______ produces the eggs.
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.
The _____ leads from each ovary to the uterus.
The ______ is the organ where a baby grows and develops.
Every month starting at _______, the lining of the uterus thickens in preparation for pregnancy.
____ is the monthly discharge of blood and tissue from the uterus.
What happens to an egg if it is not fertilized?
It is removed through menstruation.
The egg is fertilized in the....
The ____ contains a network of blood vessels that provide the embryo with oxygen and nutrients from the mother's blood.
The ____ connects the embryo to the placenta.