Male Reproductive System

Front 1

______ is a condition where the testes fail to descend into the scrotum

Back 1

Cryptorchidism

Front 2

each testis is surrounded by two ______

Back 2

tunics

Front 3

tunica ________, derived from peritoneum

Back 3

vaginalis

Front 4

The tunica _________, the fibrous capsule of the testis

Back 4

albuginea

Front 5

Septa divide the testis into 250-300 lobules, each containing 1-4 seminiferous tubules which function to _________

Back 5

produce sperm

Front 6

Interstitial (Leydig) cells between tubules produce ________

Back 6

testosterone

Front 7

Sertoli (Sustentacular) cells in between germ cells protect _____ cells and promote development

Back 7

germ

Front 8

Blood-Testis Barrier (BTB) is Formed by _______ between Sertoli cells

Back 8

tight junctions

Front 9

Blood-Testis Barrier (BTB) functions to protect germ cells by separating ____ from _______ system

Back 9

sperm
immune

Front 10

the scrotum Contains paired testicles separated by a midline ______

Back 10

septum

Front 11

Intrascrotal temperature is kept constant by 2 sets of muscles:

Back 11

Dartos
Cremaster

Front 12

____ is a smooth muscle that wrinkles scrotal skin

Back 12

Dartos

Front 13

_____ consists of bands of skeletal muscle that elevate the testes

Back 13

Cremaster

Front 14

______ is the cuff of skin covering the distal end of the penis

Back 14

Prepuce, or foreskin

Front 15

Internal penis consists of the ____ and three cylindrical bodies of ____ ________

Back 15

urethra
erectile tissue

Front 16

______ is a spongy network of connective tissue and smooth muscle riddled with vascular spaces

Back 16

erectile tissue

Front 17

Corpus ______ fills with blood causing the penis to enlarge and become rigid

Back 17

cavernosum

Front 18

Corpus ______ Surrounds the urethra and expands to form the glans and bulb of the penis

Back 18

spongiosum

Front 19

name the 4 types of ducts that sperm is delivered through

Back 19

Epididymis
Ductus (vas) deferens
Ejaculatory duct
The urethra

Front 20

the duct of ______ has cilia that Absorb testicular fluid
Pass nutrients to the sperm
Site of sperm maturation
Peristaltic movement of its walls helps sperm move

Back 20

epididymis

Front 21

place in order
vas deferens
Seminiferous tubules
sperm
epididymis

Back 21

Seminiferous tubules--> sperm--> epididymis --> vas deferens

Front 22

The ____ deferens and ____ duct
Serve as a storage reservoir for sperm (up to 42 days) and propel sperm to the urethra

Back 22

ductus
ejaculatory

Front 23

_____ is a form a birth control that involves Cutting and ligating the ductus deferens

Back 23

vasectomy

Front 24

what are the 3 regions of the urethra?

Back 24

Prostatic
Membranous
Spongy, or penile

Front 25

the ____ region of the urethra lies in the urogenital diaphragm

Back 25

membranous

Front 26

the ____ region of the urethra runs through the penis and opens to the outside at the external urethral orifice

Back 26

spongy or penile

Front 27

the ___ region of the urethra is the portion surrounded by the prostate

Back 27

prostatic

Front 28

____ glands Empty their secretions into the ducts during ejaculation

Back 28

accessory

Front 29

accessory glands include
____ vesicles
______ gland
_________ glands

Back 29

seminal
prostate
Bulbourethral

Front 30

_____ _____Lie on the posterior wall of the bladder and secrete 70% of the volume of semen

Back 30

seminal vesicles

Front 31

what three things are included in the secretions from seminal vesicles?

Back 31

fructose, prostaglandins, and proteins

Front 32

Sperm and seminal fluid mix in the ____ _____ and enter the prostatic urethra during ejaculation

Back 32

ejaculatory duct

Front 33

Doughnut-shaped gland that encircles part of the urethra inferior to the bladder

Back 33

prostate gland

Front 34

the prostate Secretes a thin, milky, alkaline fluid that accounts for __ of the semen volume

Back 34

1/3
contains
Citrate, calcium, acid phosphate, a clotting enzyme, and prostate-specific antigen (PSA)

Front 35

Produce thick, clear, and alkaline mucus prior to ejaculation that neutralizes traces of acidic urine in the urethra

Back 35

Bulbourethral Glands

Front 36

Pea-sized glands inferior to the prostate

Back 36

Bulbourethral Glands

Front 37

____ is a Milky white, sticky mixture of sperm and accessory gland secretions. a transport medium that activates sperm

Back 37

semen

Front 38

____ in semen
Decrease the viscosity of mucus in the cervix
Stimulate reverse peristalsis in the uterus
Facilitate the movement of sperm through the female reproductive tract

Back 38

prostaglandins

Front 39

The hormone ____ enhances sperm motility

Back 39

relaxin

Front 40

Seminalplasmin – _________ protein

Back 40

antibiotic

Front 41

Clotting factors _______ semen immediately after ejaculation

Back 41

coagulate

Front 42

______ liquefies the sticky mass

Back 42

Fibrinolysin

Front 43

Only 2-5 ml of semen are ejaculated, but it contains 50-____ million sperm/ml

Back 43

130

Front 44

Both _____ and _____ motor fibers carry impulses from integrating center to penis

Back 44

autonomic
somatic

Front 45

During sexual arousal, a ___ reflex promotes the release of nitric oxide, which causes...

Back 45

PNS (parasympathetic)
erectile tissue to fill with blood

Front 46

Expansion of the corpora cavernosa compresses _____ _____ and retards blood outflow

Back 46

drainage veins

Front 47

The _____ ______ functions in keeping the urethra open during ejaculation

Back 47

corpus spongiosum

Front 48

_____ is the inability to attain erection

Back 48

Impotence

Front 49

viagra is a _________ inhibitor

Back 49

phosphodiesterase

Front 50

At ejaculation, _______ nerves serving the genital organs cause:
Reproductive ducts and accessory organs to contract and empty their contents

Back 50

sympathetic

Front 51

period after ejaculation where it is almost impossible to get an erection

Back 51

refractory period

Front 52

what are the 3 major regions of sperm?

Back 52

Head-DNA,
midpiece- mitochondria
tail- flagellum

Front 53

hydrolytic enzymes allow sperm to

Back 53

penetrate and enter the egg

Front 54

Hormonal regulation of spermatogenesis and testicular androgen production involve the testes, _____, and _____ pituitary gland

Back 54

hypothalmus
anterior

Front 55

testosterone is synthesized from ______

Back 55

cholesterol

Front 56

the _____ converts testosterone into dihydrotestosterone (DHT) before it can bind within the nucleus

Back 56

Prostate

Front 57

testosterone is also converted by neurons into _______ to bring about stimulatory effects

Back 57

estrogen

Front 58

testosterone is the basis of ___ in both males and females

Back 58

libido

Front 59

peak secretion of testosterone occurs at age ___

Back 59

20

Front 60

Rise in __ and __ secretion after age 50 produces male climacteric (andropause)

Back 60

FSH
LH