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Flashcards in Chapter 26 Deck (32)
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1

Asexual reproduction results in the generation of:

genetically identical offspring

2

genetic variation among offspring increases

reproductive success in changing environments

3

hermaphroditism:

one individual with male and female reproductive systems

4

Testes

produces sperm and male hormones

5

Epididymis

stores sperm as they develop former

6

Several glands contribute to semen:

Seminal vesicles, Prostate, Bulbourethral

7

Spermatogenesis

occurs in seminiferous tubules

8

Primary Spermatocytes

divide by meiosis I to produce secondary spermatocytes

9

Secondary spermatocytes

divide by meiosis II to produce spermatids which mature into sperm and are released into seminiferous tubule

10

Ovaries

contain follicles that nurture eggs and produce sex hormones

11

Oviducts

convey eggs to the uterus where embryos develop

12

The main reproductive structure of the male reproductive system is the _______, and all the rest of the structures are accessories.

Testes

13

Starting from where the sperm are created, what is the correct order of structures that the sperm pass through as they make their way outside the body?

Testes, epididymis, vas deferens, urethra

14

What organs regulate sperm production?

Hypothalamus, Pituitary gland, testes

15

The formation of sperm and egg requires:

meiosis

16

the uterus opens into the vagina through the ____

cervix

17

Hormones synchronize ________ in the ovary and uterus

cyclic changes (period, menstrual cycles)

18

Contraception:

Deliberate prevention of pregnancy

19

The main reproductive structure of the female reproductive system is the ________, and all the rest of the structures are accessories.

Ovaries

20

Fertilization results in a:

Zygote

21

Fertilization triggers:

embryonic development

22

What is the correct order of development?

Zygote, Blastula, Gastrula. (ZBG)

23

Gastrulation produces a:

Three-Layered embryo

24

what are the three layers of embryos?

Ectoderm, Mesoderm, Endorderm

25

Ectoderm:

Outside, becomes skin and nervous systems

26

Endoderm:

Inside, becomes digestive tract

27

Mesoderm:

In the middle, becomes muscle and bone

28

Name 3 ways tissues and organs develop by:

-Changes in cell shape
-Cell migration
-Programmed cell death

29

The embryo and placenta take place during which month of pregnany?

1st

30

Trophoblast

-outer cell layer
-attaches to uterine wall
-Forms part of the placenta