CK12 Life Science

(18) http://commons.wikimedia.org/wiki/File:Throat_with_Tonsils_0011J.jpeg. GNU Free Documentation. (19) http://en.wikipedia.org ...

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Chapter 22 Reproductive Systems and Life Stages 22.1 Lesson 22.1: Male Reproductive System Lesson Objectives State the function ...

Functions of the Male Reproductive System Themalereproductivesystemhastwomainfunctions: producingspermandsecretingtestos- terone ...

Figure 22.1: This drawing shows the organs of the male reproductive system. It shows the organs from the side. Find each organ i ...

Sperm and Sperm Production Sperm are tiny cells. In fact, they are the smallest cells in the human body. A sperm cell is shown i ...

spermatids have half the number of chromosomes as the original cell. However, they are still immature and cannot move on their o ...

http://www.eurekalert.org/pub_releases/2007-05/wuso-eii051007.php http://www3.interscience.wiley.com/journal/118662957/abstract ...

22.2 Lesson 22.2: Female Reproductive System Lesson Objectives State the functions of the female reproductive system. Identify ...

Female Reproductive Organs The female reproductive organs include the vagina, uterus, Fallopian tubes, and ovaries. These organs ...

ovaries also secrete estrogen. The twoFallopian tubesare narrow passages that open off the uterus. Each tube reaches one of the ...

Figure 22.4: This diagram shows how an egg and its follicle develop in an ovary. After it develops, the egg leaves the ovary and ...

Menstruation While the egg and follicle are developing in the ovary, tissues are building up inside the uterus. The uterus devel ...

Figure 22.5: This diagram shows the changes that normally occur in the ovary and uterus during the menstrual cycle. It also show ...

the 2007 Women in Endocrinology Award. Lesson Summary The functions of the female reproductive system are to produce eggs, secr ...

http://www.women-in-endo.org/awards/#richards http://en.wikipedia.org/wiki Vocabulary cervix Narrow part of the uterus where i ...

22.3 Lesson 22.3: Reproduction and Life Stages Lesson Objectives Explain how fertilization occurs. Identify major events of pre ...

Figure22.6: Thisspermisreadytopenetratethemembraneofthisegg. Noticethedifference in size of the sperm and egg. What will happen ...

lacks a tail. Its facial features have also started to form. The older embryo is much bigger, as well. The pictures in theTable( ...

Table 22.1: (continued) Image Developmental characteristics Internal ears and eyes are developing. Nails have appeared on finge ...