Male Reproductive Tract

Question 1

Testicles

Answer 1

Produce sperm cells that fertilize the female’s egg

Lie externally to the abdomen

Question 2

Testosterone

Answer 2

Hormone that makes the appearance and behavior of a male masculine and testosterone

Question 3

Epididymis

Answer 3

Where sperm are stored from the testicle to mature

Question 4

Scrotum

Answer 4

A sac that contains and protects the testicles, regulated the temperature
Can retreat towards the body when warmth is needed and can descend when cooling is needed

Question 5

Vas Deferens

Answer 5

Transports sperm from the epididymis to the urethra

Question 6

Urethra

Answer 6

Large muscular canal extending from the urinary bladder. Through this urine and semen are excreted

Question 7

Accessory Sex Glands

Answer 7

Seminal vesicles, prostrate, and bulbouerthral gland

Primarily add to the sperm fluid to provide health and nutrition to sperm

Question 8

Penis

Answer 8

Organ of copulation. Characterized by spongy, erectile tissue. Provides passageway for semen and urine

Question 9

Seminiferous tubes

Answer 9

Found inside the testes and the site of sperm production

Question 10

The vas deferens takes the sperm where?

Answer 10

To the prostate gland where accessory secretions are added to the sperm

Question 11

Sperm cells contain

Answer 11

Flagella for movement
Mitochondria for energy
DNA for fertilization

Question 12

Pituitary gland helps to control function of

Answer 12

Testes

Question 13

Luteinizing Hormone (in males)

Answer 13

Stimulates the production of testosterone

Question 14

Follicle Stimulating Hormone (in males)

Answer 14

Facilitates sperm production

Question 15

Fibroelastic Penis

Answer 15

Uses sigmoid flexure and retractor muscle to become erect

Question 16

Vascular Penis

Answer 16

Will fill up with blood to become erect (humans and horses)

Question 17

Thermoregulation

Answer 17

Regulation of temperature of testes to support fertile sperm production

Question 18

Cryptochidism

Answer 18

When one or neither testes descend into the scrotum during fetal stages

Question 19

Convoluted

Answer 19

Contains many veins

Question 20

Vasectomy

Answer 20

Procedure to sterilize a male

Question 21

Spermatogenesis

Answer 21

Formation and growth of sperm

Question 22

Testosterone

Origin and function

Answer 22

Origin: Leydig cells found in the testes
Promotes: spermatogenesis and secondary sex characteristics

Question 23

Tunica Dartos Muscle

Origin and function

Answer 23

Origin: Scrotum
Functions: Suspend testes in scrotum and provide heat/cooling system

Question 24

The 3 Parts of the Spermatic Cord

Answer 24

1. Ductus Deferens
2. Pampiniform Plexus
3. Cremaster Muscle

Question 25

Ductus(/Vas) Deferens Function

Answer 25

Move fertile sperm from the tail of the epididymis to penis

Question 26

Pampiniform Plexus Function

Answer 26

Composed of testicular artery and veins to cool blood before scrotum

Question 27

Cremaster Muscle

Answer 27

Supports testes, pull up testes during fight/flight (short period of time)

Question 28

Gubernaculum Function

Answer 28

Pulls testes through inguinal ring into the scrotum

Question 29

Inguinal ring

Answer 29

Opening between the body and scrotum

Question 30

Unlilateral Cryptorchidism

Answer 30

Only 1 testis descends into the scrotum

Question 31

Bilateral Cryptorchidism

Answer 31

Both testes don’t descend into the scrotum

Question 32

3 functions of the Epididymis

Answer 32

Sperm transport
Sperm maturation
Sperm storage

Question 33

Head of Epididymis (caput)

State of sperm

Answer 33

Entry point of Epididymis for sperm

sperm are not motile or fertile

Question 34

Body of the epididymis (corpus)

State of sperm

Answer 34

Maturation occurs here

Sperm some what motile and fertile

Question 35

Tail of the Epididymis (cavada)

State of sperm

Answer 35

Sperm is stored here (5-10 ejaculations)
sperm are motile and fertile
sperm can bind to an egg

Question 36

The 2 parts of the fibroelastic penis

Answer 36

Sigmoid flexure

retractor penis muscle

Question 37

Sigmoid flexure

Answer 37

‘S’ shaped curve that holds the penis within the body when not erected or helps with erection

Question 38

3 Sterilization Techniques

Answer 38

Castration
Vasectomy
Shortening of the spermatic cord

Question 39

Castration

Answer 39

Removal of the testicles, no sexual acts

Question 40

Vasectomy

Answer 40

Cutting to sever the Ductus Deferens

Question 41

Shortening of the spermatic cord effect

Answer 41

Raises the testicles closer to the body - makes the sperm too close to the body and too hot - making them infertile

Question 42

Thermoregulation is important because

Answer 42

Sperm will die if too hot, too cold, or comes into contact with blood

Question 43

Thermoreceptor function

Answer 43

Sends messages to the brain if too hot/cold

Question 44

Sweat gland function in male reproduction

Answer 44

located on the scrotum and will allow for cooling

Question 45

Tunica Dartos Muscle function

Answer 45

Expand when too hot (testes away from body)

Pull up when too cold (testes to the body)

Question 46

Leydig cell

Function and location

Answer 46

Function : produce testosterone

Location : outside the seminiferous tubules

Question 47

Sertoil cell

Function and location

Answer 47

Function : Protect and aid in growing sperm

Location : Inside seminiferous tubules

Question 48

Steps of sperm transport

Answer 48

1 - Seminiferous tubules 
2 - Epididymis 
3 - Vas deferens 
4 - Penis 
5 - Into female tract