Male Reproductive System

Question 1

A _____ is a specialized sex cell

Answer 1

Gamete

Question 2

How many chromosomes does a gamete carry?

Answer 2

23 chromosomes

Question 3

A _____ is a male gamete and an ______ is a female gamete.

Answer 3

Sperm and Oocyte

Question 4

Testes produce ____ and _____ to support ______.

Answer 4

sperm and androgens ; reproduction

Question 5

Where are Testes located?

Answer 5

Inside the scrotum

Question 6

Why are Testes inside the scrotum?

Answer 6

To remain 2-4 degrees cooler than body temp

Question 7

What muscles contract or relax to raise or lower the testes?

Answer 7

Dartos and Cremaster muscles

Question 8

What is located inside of the spermatic cord?

Answer 8

Testicular artery, autonomic nerve, and lymphatic vessels

Question 9

What are reproductive organs that are paired and have 2 layers?

Answer 9

Male gonads

Question 10

What is the serous outer membrane of the male gonads?

Answer 10

Tunica vaginals

Question 11

The ______ ______ is the tough connective tissue that covers the entire testes and separates them into 300-400 lobules.

Answer 11

Tunica albuginea

Question 12

Where does sperm develop inside the lobules?

Answer 12

Seminiferous tubules

Question 13

When should testes descend ?

Answer 13

At about 7 months in the womb

Question 14

What is Cryptorchidism?

Answer 14

When testes fail to descend before birth

Question 15

What pushes sperm to the epididymis?

Answer 15

peristalsis

Question 16

What promotes sperm production and can eliminate germ cells?

Answer 16

Sertoli cells

Question 17

Sertoli cells create the blood-testes barrier due to _____ ________.

Answer 17

tight junctions

Question 18

What are the stem cells or germ cells of the testes?

Answer 18

Spermatogonia

Question 19

What is the process of producing sperm in the seminiferous tubules?

Answer 19

Spermatogenesis

Question 20

When does Spermatogenesis begin?

Answer 20

At puberty

Question 21

A Spermatogenesis cycle takes ____ days and a cycle starts every _____ days.

Answer 21

64 days and a cycle starts every 16 days

Question 22

How many Haploid Daughter cells are produced at the end of each spermatogenesis cycle?

Answer 22

4

Question 23

What is the head a sperm cell called?

Answer 23

A spermatid

Question 24

How many sperm cells are produced each day?

Answer 24

100-300 million each day

Question 25

A sperm cell has ______ times less volume than female gametes

Answer 25

85,000

Question 26

What has little cytoplasm and haploid nucleus?

Answer 26

Head

Question 27

What is the head of the sperm cell covered in?

Answer 27

Lysosomal enzymes in the acrosome

Question 28

What part of the sperm cell has tightly packed mitochondria ?

Answer 28

Mid-piece

Question 29

What part of the sperm has a flagellum for movement and motility?

Answer 29

Tail

Question 30

Sperm start in the _______ ________ and moves fluid to ________.

Answer 30

Seminiferous tubules, epididymis

Question 31

How long does it take for sperm to move through the epididymis?

Answer 31

12 days

Question 32

How long Is the epididymis ?

Answer 32

6 meters long

Question 33

Sperm are moved by smooth muscle(peristalsis) until _________.

Answer 33

The tail fully develops

Question 34

Where is sperm stored until ejaculation occurs?

Answer 34

the tail of the epididymis

Question 35

Where does sperm exit and are pushed to the ductus deferens?

Answer 35

Duct system

Question 36

What is the ampulla

Answer 36

Where the duct ends

Question 37

What are glands that contribute 60% of semen volume?

Answer 37

Seminal Vesicles

Question 38

Seminal Vesicles have lots of _____ for ATP.

Answer 38

Fructose

Question 39

Where does the Seminal vesicles meet sperm?

Answer 39

Ejaculatory duct

Question 40

What is the gland that secretes fluid to coagulate the semen which later de-coagulates in the female.

Answer 40

Prostate gland

Question 41

The prostate size ____ after puberty and gradually grows after age 25.

Answer 41

doubles

Question 42

What is Benign Prostatic hyperplasia (BPH)?

Answer 42

When the prostate gets to big

Question 43

What is the second most common cancer in men?

Answer 43

Prostate cancer

Question 44

How can you detect prostate cancer?

Answer 44

HX, blood test, and rectal exam

Question 45

What is the thick fluid that lubricates the end of the urethra and vagina and cleans urine residue?

Answer 45

Bulbourethral Glands

Question 46

When do the bulbourethral glands activate?

Answer 46

After arousal and before semen release.

Question 47

What is it called when the 3 chambers surrounding the urethra fill with blood during arousal and REM sleep?

Answer 47

Vasocongestion

Question 48

Why is Nitric Oxide (NO) released during erection?

Answer 48

To dilate blood vessels and increase blood volume to fill chambers

Question 49

The filled chamber put pressure on venules preventing ______.

Answer 49

Drainage

Question 50

When does testosterone begin secreting in the body?

Answer 50

7th week of development and again at puberty

Question 51

What secretes to differentiate male sexual organs?

Answer 51

Testosterone

Question 52

Low levels of testosterone lead to _________.

Answer 52

Infertility

Question 53

What does testosterone help with?

Answer 53

Muscle development, bone growth, secondary sex characteristics, and libido in men and women

Question 54

_______ and _______ secrete a small amount of testosterone.

Answer 54

Ovaries and adrenal glands

Question 55

What is the production of testosterone controlled by?

Answer 55

Hypothalamus and pituitary gland

Question 56

What does GnRh from the hypothalamus cause the pituitary gland to release.

Answer 56

LH and FSH

Question 57

What stimulates spermatogenesis and releases inhibin in men?

Answer 57

FSH

Question 58

What hormone up-regulates the production of testosterone in men?

Answer 58

LH