Ch 43: Reproduction Flashcards Preview

LS 2 > Ch 43: Reproduction > Flashcards

Flashcards in Ch 43: Reproduction Deck (19):
1

Sexual reproduction

Produces offspring that aren't identical to the parents
Increases genetic variation in a population

2

Gametogenesis

Making of gametes
Occurs in the gonads

3

Gametes

Cells specialized for reproduction
Haploid cells
Ex. egg and sperm

4

Primary sex organs

Gonads - testes and ovaries
Produce gametes and secrete hormones

5

Accessory sex organs

External genitalia
Glands, tubules, and ducts

6

Epididymis

Stores sperm

7

Testes

Generates sperm

8

Vas deferens

Transports sperm

9

Vas deferens

Transports sperm

10

Seminal vesicle, prostate gland, and bulbourethral gland

Glands that secrete semen components
Provide nutrients
Facilitate sperm movements

11

Leydig cells

The Luteinizing hormone acts on the cells to produce testosterone

12

Sertoli cells

FSH acts on the cells to undergo spermatogenesis

13

Endometrium

Thick lining of the uterus
Eggs will implant here after fertilization

14

Ovarian cycle

Produces eggs and hormones in the ovaries

15

Menstrual cycle

Prepares the uterus endometrium for the fertilized egg

16

Luteinizing hormone

The main hormone that drives the ovulation process

17

Fertilization

Union of sperm and egg
Creates a zygote

18

Cumulus

A think gelatinous matrix
Only the strongest sperm can penetrate the layer

19

Zona pellucida

A glycoprotein envelope beneath the cumulus
A species specific mechanism
Proteins only recognize sperm from the same species