Chapter 26

Question 1

Asexual reproduction results in the generation of:

Answer 1

genetically identical offspring

Question 2

genetic variation among offspring increases

Answer 2

reproductive success in changing environments

Question 3

hermaphroditism:

Answer 3

one individual with male and female reproductive systems

Question 4

Testes

Answer 4

produces sperm and male hormones

Question 5

Epididymis

Answer 5

stores sperm as they develop former

Question 6

Several glands contribute to semen:

Answer 6

Seminal vesicles, Prostate, Bulbourethral

Question 7

Spermatogenesis

Answer 7

occurs in seminiferous tubules

Question 8

Primary Spermatocytes

Answer 8

divide by meiosis I to produce secondary spermatocytes

Question 9

Secondary spermatocytes

Answer 9

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

Question 10

Ovaries

Answer 10

contain follicles that nurture eggs and produce sex hormones

Question 11

Oviducts

Answer 11

convey eggs to the uterus where embryos develop

Question 12

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

Answer 12

Testes

Question 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?

Answer 13

Testes, epididymis, vas deferens, urethra

Question 14

What organs regulate sperm production?

Answer 14

Hypothalamus, Pituitary gland, testes

Question 15

The formation of sperm and egg requires:

Answer 15

meiosis

Question 16

the uterus opens into the vagina through the ____

Answer 16

cervix

Question 17

Hormones synchronize ________ in the ovary and uterus

Answer 17

cyclic changes (period, menstrual cycles)

Question 18

Contraception:

Answer 18

Deliberate prevention of pregnancy

Question 19

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

Answer 19

Ovaries

Question 20

Fertilization results in a:

Answer 20

Zygote

Question 21

Fertilization triggers:

Answer 21

embryonic development

Question 22

What is the correct order of development?

Answer 22

Zygote, Blastula, Gastrula. (ZBG)

Question 23

Gastrulation produces a:

Answer 23

Three-Layered embryo

Question 24

what are the three layers of embryos?

Answer 24

Ectoderm, Mesoderm, Endorderm

Question 25

Ectoderm:

Answer 25

Outside, becomes skin and nervous systems

Question 26

Endoderm:

Answer 26

Inside, becomes digestive tract

Question 27

Mesoderm:

Answer 27

In the middle, becomes muscle and bone

Question 28

Name 3 ways tissues and organs develop by:

Answer 28

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

Question 29

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

Answer 29

1st

Question 30

Trophoblast

Answer 30

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

Question 31

Where does fertilization occur in humans?

Answer 31

-Oviduct

Question 32

The trimester with the most radical change is?

Answer 32

First