Module 2

Question 1

 Sac of loose skin, fascia & smooth muscle divided into two pouches by a septum
 Contains the testes

Answer 1

Scrotum

Question 2

 Paired oval glands
measuring 4-5 cm
 Each lobule is filled
with 2 or 3 Seminiferous tubules
where sperm are
formed

Answer 2

Testes

Question 3

• secretes testosterone

Answer 3

Interstitial cells

Question 4

 External male organ of copulation
 Transfers the sperm cell

Answer 4

PENIS

Question 5

Sperm forming cells go through two meiotic divisions

Answer 5

Spermatogenesis

Question 6

give four spermatids, each with 23 single
stranded chromosomes

Answer 6

Second meiosis division

Question 7

give two secondary spermatocytes, each with 23 chromosomes that become double stranded

Answer 7

First meiosis division

Question 8

contains DNA and the acrosome with enzymes for
penetrating the egg

Answer 8

Head

Question 9

contains mitochondria
to form ATP for energy

Answer 9

Midpiece

Question 10

is flagellum used for
locomotion

Answer 10

Tail

Question 11

Secretes 30% of milky, slightly
acidic seminal fluid with an antibiotic to kill bacteria

Answer 11

Prostate

Question 12

Secrete 60% of clear,
alkaline seminal fluid, with fructose sugar, ATP and prostaglandins for normal sperm nutrition &
function Chemicals for coagulation of semen

Answer 12

Seminal Vesicles

Question 13

Secrete clear, alkaline mucus to buffer and lubricate urethra

Answer 13

Cowper’s Glands

Question 14

Mixture of sperms and seminal fluid: 60% from seminal vesicles, 30% from prostate , 5% testes, 5% bulbourethral glands

Answer 14

Semen

Question 15

thin milky secretions of the prostate have several functions:

Answer 15

• Regulate pH
• Liquefy the coagulated
  semen

Question 16

secretes gonadotropin
releasing hormone (GnRH)

Answer 16

Hypothalamus

Question 17

secretes FSH and LH

Answer 17

Anterior pituitary

Question 18

causes Sertoli cells to secrete ABP
and inhibin

Answer 18

FSH

Question 19

stimulate
spermatogenesis

Answer 19

ABP and testosterone

Question 20

• CHILD to ADULT
  CHANGES:
  ✓ Reproductive system matures
  ✓ Developmental changes in
  hypothalamus
  ✓ Elevated FSH levels
  ✓ Promote spermatogenesis
  ✓ Elevates LH levels

Answer 20

 Puberty

Question 21

❑ major male hormone
❑ Necessary for spermatogenesis
❑ Responsible for the development
of secondary male sexual
characteristics

Answer 21

Testosterone

Question 22

▪ Hair distribution and growth
▪ Skin texture
▪ Body fat distribution
▪ Skeletal muscle grow
▪ Changes in the larynx

Answer 22

 Secondary sexual characteristis:

Question 23

 Rythmic massage of the penis
 Psychic stimuli
 Ejaculation while sleeping (wet
dreaming)

Answer 23

Sensory impulses and integration

Question 24

 Sexual stimulation  Parasympathetic nervous
system reflex
 Dilation of the arterioles
supplying the penis
 Blood enters the penis
compressing the veins so that
the blood is trapped
 Blood sinuses of penis engorge
with blood

Answer 24

Erection

Question 25

 Sympathetic nervous system reflex  Skeletal muscles squeeze semen out through urethra

Answer 25

Ejaculation

Question 26

 Muscle contractions close sphincter at base of bladder  Fluids propelled through ductus deferens, seminal vesicles, & ejaculatory ducts into bulb of penis  Prostatic fluid secreted into urethra

Answer 26

Emission

Question 27

where semen is formed

Answer 27

seminiferous tubules