Ch 26

Question 1

The phase during which an individual transitions from non-reproductive to reproductive is called

Answer 1

Puberty

Question 1

The phase during which an individual transitions from non-reproductive to reproductive is called

Answer 1

Puberty

Question 2

An organ that produces sex cells is called

Answer 2

Gonad

Question 3

A sex cell is called

Answer 3

Gamete

Question 4

A fertilized egg is called

Answer 4

Zygote

Question 5

The term used to refer to the growing organism from fertilization through the first 8 weeks in a human development

Answer 5

Embryo

Question 6

From the 8th week of development to birth the growing organism is called

Answer 6

Fetus

Question 7

This organ produces sperm

Answer 7

Testis

Question 8

This organ produces eggs (ova)

Answer 8

Ovary

Question 9

The penis clitoris scrotum and labia are referred to as _____ genitalia

Answer 9

External genitalia

Question 10

The uterus Fallopian tubes vas deferens and epididymis are referred to as _____ genitalia

Answer 10

Internal genitalia

Question 11

Normally the cell’s nucleus has _____ pairs of chromosomes

Answer 11

23

Question 12

The chromosomes that code for the body’s characteristics other than sex cells are called

Answer 12

Autosomes

Question 13

Sex cells only have half the number of chromosomes so that The offspring will gain half from the egg and half from the sperm. Cells that have only one set of chromosomes not pairs are called

Answer 13

Haploid

Question 14

During fertilization a complete set of chromosomes is formed ( half or one set from the sperm, the other set from the egg) cells that contain the complete number of chromosomes (46) are called

Answer 14

Diploid

Question 15

The x and y chromosomes are referred to as the _____ chromosomes

Answer 15

Sex

Question 16

Offspring that only have x chromosomes will develop into this sex

Answer 16

Female

Question 17

Offspring that have the combination of x and y chromosomes will develop into this sex

Answer 17

Male

Question 18

If The offspring inherit two x chromosomes one will become inactive and be called

Answer 18

Barr body

Question 19

This sex chromosome contains essential genes for survival if The offspring does not have at least one of these sex chromosomes it will die

Answer 19

X

Question 20

If an offspring inherits three sex chromosomes and the combination is x x y The offspring will be considered this sex genetically

Answer 20

Male

Question 21

All embryos have reproductive structures that could become either sex which ones develop depend on which signal molecules are present these tissues that could become either male or female structures are called

Answer 21

Bipotential

Question 22

This part of the embryonic gonadal structure can develop into ovaries

Answer 22

Cortex

Question 23

If this Gene is present and expressed The offspring will develop testes

Answer 23

Sex determining region of Y

Sry

Question 24

This signal molecule which is produced and secreted by the sertoli cell of the testes will cause the malarian duct to degenerate

Answer 24

Anti-malarian hormone

Question 25

This signal molecule which is produced and secreted by laidig cells of the testes will stimulate the development of the wolfian duct

Answer 25

Testosterone

Question 26

This duct will develop into the fallopian tube uterus and upper part of the vagina

Answer 26

Mullerian

Question 27

This duct will develop into the seminal vesicle vas deferens and epididymis

Answer 27

Wolffian

Question 28

The genital tubercle will develop into the glands penis in males or will develop into the ____ in females

Answer 28

Clitoris

Question 29

This signal molecule and its receptor are required for the male external genitalia to develop

Answer 29

Dihydrotestosterone.

Question 30

This enzyme catalyzes the conversion of testosterone into the most common form of estrogen, estradiol

Answer 30

Aromatase

Question 31

This enzyme catalyzes the conversion of testosterone into dihydrotestosterone

Answer 31

5 alpha reductase

Question 32

The making of sex cells is called

Answer 32

Gomatogenesis.

Question 33

The type of cell division involved in the formation of sex cells is called

Answer 33

Meiosis

Question 34

During spermatogenesis one primary spermocyte will lead to the development of ___ sperm

Answer 34

4

Question 35

During oogenesis one primary oocyte will lead to the development of ____ eggs

Answer 35

1

Question 36

Before the development of gametes duplicate copies of each chromosome must take place. The process is called DNA replication and the two copies are called

Answer 36

Sister chromatids

Question 37

Primary oocytes are developed in a female during this stage of development

Answer 37

Embryo

Question 38

Primary spermicides are developed in male during this stage of development

Answer 38

Reproductive adult

Question 39

In the signaling pathway of the reproductive system this signal molecule is produced and secreted from the hypothalamus

Answer 39

Gonadotropin releasing hormone

Question 40

Follicle stimulating hormone and luteinizing hormone are collectively called the

Answer 40

Gonadotropin

Question 41

In males this hormone will stimulate the laydigg cells to produce testosterone

Answer 41

Luteinizing hormone

Question 42

In males this gonadotropin will target cells of the sertoli cells and stimulate sperm production

Answer 42

Follicle stimulating hormone

Question 43

This structure houses the egg and grows during the ovarian cycle

Answer 43

Follicle

Question 44

In females this gonadotropin will Target the granulosis cells of the follicles inside the ovary which increases estrogen release

Answer 44

Follicle stimulating hormone

Question 45

In females a spike in this gonadotropin stimulates the release of the egg from the ovary

Answer 45

Luteinizing hormone

Question 46

The process of releasing the egg from the ovary is called

Answer 46

Ovulation

Question 47

The follicle that is Left behind in the ovary after the egg is released becomes the

Answer 47

Corpus luteum

Question 48

The phase of the ovarian cycle during which the follicle grows is logically called the ______ phase

Answer 48

Follicular

Question 49

The phase of the ovarian cycle during which the corpus luteum is formed is called the _____ phase

Answer 49

Luteal phase

Question 50

This steroid hormone only increases significantly during the luteal phase of the ovarian cycle

Answer 50

Progesterone