Chapter 22 Reproductive System Flashcards Preview

Anatomy and Physiology II Lab > Chapter 22 Reproductive System > Flashcards

Flashcards in Chapter 22 Reproductive System Deck (15):
1

Gametes

sex cells

2

Spermatozoa

male sex cells, haploid

3

Ova (egg)

female gametes, haploid

4

Zygote

fusion of male and female gamete

5

Diploid

46 chromosomes

6

Haploid

23 chromosomes

7

Endometrium

innermost layer of the uterus; composed of two portions.

8

Myometrium

middle and thickest layer of uterus, muscular layer

9

Epimetrium

outermost and thinnest layer

10

Fimbriae

fingerlike projections at the open end of the uterine tube; constant movement of the fimbriae create a current that draws the released ovum into the uterine tube toward the uterus.

11

Oogenesis

production of eggs in ovary; unequal cytokinesis produces one secondary oocyte and one polar body. Secondary oocyte divides into one egg and one polar body. Polar body may or may not divide into two more polar bodies. PRODUCTS= one egg and two/three polar bodies

12

Spermatogenesis

sperm produced in seminiferous tubules; produces four haploid cells which mature into sperm. Sperm are stored in epididymis.

13

Mitosis vs. Meiosis

Meiosis produces four haploid daughter cells;
Mitosis produces two diploid daughter cells.
Meiosis has recombination and only occurs in sex cells.
Mitosis is somatic cell division.

14

Stages of Meiosis I

Prophase I: Crossing over
Metaphase I: tetrads line up at middle
Anaphase I: homologous chromosomes separate
Telophase I: cells pull apart, each has one of replicated chromosomes from each homologous pair of chromosomes

15

Stages of Meiosis II

Prophase II
Metaphase II: Chromosomes align at middle
Anaphase II: Sister chromatids separate
Telophase II: Cells pull apart