Tuesday, January 11, 2011

OH THE WEATHER OUTSIDE IS FRIGHTFUL

Here is a chart distinguishing internal and external fertilization and internal and external development (Click on me).

Male Reproductive System Fill-In (Click on me) / Answers (Click on me)
Female Reproductive System Fill-In (Front View) (Click on me) / Answers (Click on me)

Male Reproductive System Functions (Click on me)
Female Reproductive System Functions (Click on me)

Sorry if I missed any organ and its functions

For the Female Reproductive Side View, please check your packet because I could not find any blank diagrams to edit and due to laziness.

WHY DO WE HAVE SEX?! : TO INCREASE GENETIC VARIATION AND INCREASE THE CHANCE OF SURVIVAL OF SPECIES!
Two types of reproduction: Asexual and sexual.
-Asexual - One parent, offspring alone. (Bacteria, plants, amoebas, and simple organisms)
-Sexual - Joining of gametes increasing variation

Male Secondary Sex Characteristics: FHS stimulates testes to produce testosterone.
-Testosterone causes larynx wider (deeper voice), broader shoulders, facial hair, pubic hair, and muscle growth.

Female Secondary Sex Characteristics: FHS stimulates ovaries to produce estrogen.
-Estrogen causes wider hips for child delivery, breasts, pubic hair.

Terms:

Pituitary Gland - Secretes hormones and regulates other endocrine glands
Hypothalamus - Integrates the endocrine and nervous system as well as controlling the pituitary gland

Endocrine system regulates by a feedback mechanism: Positive and Negative.
Positive: When hormones are low, hypothalamus signals the pituitary to secrete more hormones
Negative: When hormones are high, production of hormones come to halt

FSH (Follicle-Stimulating Hormone): Stimulates production of mature eggs in ovaries.
LH (Luteinizing hormone): Stimulates ovaries and prepares for implantation of fertilized egg.
Check chapter 34.2 in your textbook which starts on page 982.

Zygote: Fertilized egg
Cleavage: Creates a cleave when cells are dividing
Chorion: Develops into a placenta
Amnion: Develops to amniotic sac which cushions the fetus
Gastrulation: Formation of 3 embryonic germ layer
-Endoderm - lining of digestive, reproductive, and respiratory systems
-Mesoderm - muscles, blood, and bones
-Ectoderm - skin and nervous system

Placenta and umbilical cord connect the fetus to mother
-Provides energy and oxygen and removes waste and carbon dioxide
Amniotic sac cushions the fetus

Contraception is preventing the union of egg and sperm
Forms of contraception:
-Abstinence (Safest way to prevent pregnancy)
-Condom
-Birth Control Pills
-Tubal Ligation (Woman's tube gets tied)
-Vasectomy (Cuts vas deferens where sperm travels)

Hope this helps you ladies and gentlemen study.

Good luck

THE NEXT SCRIBE SHALL BE (DRUM ROLLLLLLLLLLLLLLLLLLLLLLLL)
BAILEY

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