Chpt 3: Male Reproductive Anatomy

Question 1

consists of the spermatic cord, testis, epididymis, accessory sex glands, and penis

Answer 1

male reproductive system

Question 2

produces spermatozoa and testosterone, inhibin, estrogen, proteins

Answer 2

testis

Question 3

provides environment for final maturation of spermatozoa and serves as storage organ

Answer 3

epididymis

Question 4

produce seminal plasma

Answer 4

accessory sex glands

Question 5

copulatory organ

Answer 5

penis

Question 6

production of sperm

Answer 6

spermatogenesis

Question 7

produced, pass through rete tubules and efferent ducts, endter head and body of epididymis where they undergo changes that make them fertile, enter tail of epididymis, upon sexual excitation spermatozoa are shipped via contractions of epididymal duct and ductus deferens to a new location (pelvic urethra), accessory sex glands add seminal plasma, moves to end

Answer 7

path of sperm

Question 8

spermatic cord, scrotum, testis, excurrent duct system, accessory sex glands, penis and muscles for protrusion, erection and ejaculation

Answer 8

basic components of male reproductive system

Question 9

extends from inguinal ring to its attachment on the dorsal pole of the testis, suspends testis in scrotum, houses ductus deferens, cremaster muscle , and pampiniform plexus

Answer 9

spermatic cord

Question 10

branches from abdominal aorta, is rature straight until it passes through inguinal canal, then becomes highly convoluted

Answer 10

testicular artery

Question 11

in spermatic cord, branch into an elaborate network that forms many intimate finger like wrappings surrounding the highly convoluted testicular artery

Answer 11

testicular veins

Question 12

consists of the testicular veins and artery, eventually forms a single vein that runs into the caudal vena caba, important for proper temperature control of testis

Answer 12

pampiniform plexus

Question 13

provide vascular, lymphatic, neural connection to body, heat exchange, house cremaster muscle

Answer 13

functions of spermatic cords

Question 14

formed by the complex, intimate network of the spermaic artery and spermatic veins, venous blood is cooled by direct heat loss from the testicular veins through the skin of the scrotum

Answer 14

countercurrent heat exchanger

Question 15

long convoluted testicular artery serves as a

Answer 15

pulse pressure eliminator

Question 16

exists in all arteries throughout the body, difference between systolic pressure (heart contraction) and diastolic pressure (heart relaxation)

Answer 16

pulse pressure

Question 17

primary muscle supporting the testis and coursing the length of the spermatic cord, stiated muscle that’s continuous with the internal abdominal oblique muscle, helps support testis and aids in control of testicular temperature and facilitates blood movement

Answer 17

cremaster muscle

Question 18

smooth muscle in scrotum, capable of sustained contractions, mesh like smooth muscle layer that lies just beneath scrotal skin, contracts/ relaxes depending on external temp

Answer 18

tunica dartos

Question 19

two lobed sac, protects and supports testes, required for proper temperature regulation (thermosensor, swamp cooler), consists of four major layers

Answer 19

scrotum

Question 20

skin, tunica dartos, scrotal fascia, parietal vaginal tunic

Answer 20

layers of scrotum

Question 21

heavily populatedwith sweat glands required for maintenance of proper testicular temperature, sweat glands are innervated bysympathetic nerves that allow hypothalamus to detect temp change

Answer 21

scrotal skin

Question 22

pair of organs, consided primary reproductive organs, produce spermatozoa and testosteron, inhibin, estrogens, variety of proteins, and fluid primarily originating from seminiferous tubules (within)

Answer 22

testis

Question 23

covering of testis, composed of two layers the visceral vaginal tunic and the CT capsulthe tunica albuginea

Answer 23

testicular capsule

Question 24

closely associated with the tunica albuginea

Answer 24

vaginal tunic

Question 25

sends many finger like projections into the parenchyma of the testical and then join with mediastinum

Answer 25

tunica albuginea

Question 26

located in the middle of the testis, central CT core of testis, housed rete tubules

Answer 26

mediastineum

Question 27

located around mediastineum,consists of seminiferous tubules, interstitial cells of Leydig, capillaries, lymphatic vessels, and CT, soft tan mass, can be divided into tubular and interstitial comparment

Answer 27

testicular parenchyma

Question 28

part of parenchyma, consists of seminiferous tubules and all the cells and material inside them

Answer 28

tubular compartment

Question 29

part of parenchyma, consists of all cells and materials outside the seminiferous tubules like blood vessels, CT, lymphatics, nerves and Leydig cells that produce testosterone

Answer 29

interstitial compartment

Question 30

tiny channels through which spermatozoa are transported out of the testis

Answer 30

rete tubules

Question 31

section of seminiferous tubules where spermatogenesis predominantly occurs

Answer 31

tubulus contortus (convoluted portion)

Question 32

composed of a basement membrane and a layer of seminiferous (germinal) epithelium. surrounded by contractile peritubular cells, their contraction and flow of fluid secreted by Sertoli cells allows newly frmed spermatozoal to mobe into rete tubules

Answer 32

seminiferous tubule

Question 33

only somatic cells in seminiferous epithelium, are the governors of spermatogenesis, each hosts a maximum number of developing germ cells, contain receptors for FSH and testosterone, can produce androgen binding protein and sulfatedglycoproteins 1 and 2, transferrin, inhibin

Answer 33

Sertoli cells

Question 34

prevents immunologic destruciton of developing germ cells, formed by peritubular cells surounding the semiferous tuble and Sertoli cell junctional complexs

Answer 34

blood-testis barrier

Question 35

consists of efferent ducts, epididymal duct, the ductus deferens

Answer 35

excurrent duct system

Question 36

convey newly formed spermatozoa and tubular fluid (rete fluid) into epididymal duct

Answer 36

efferent ducts

Question 37

single, highly convoluted duct ranging in length, surrounded by smooth muscle responsible for rhythmic contractions which force spermatozoato travel along its course to tail

Answer 37

epididymal duct

Question 38

total spermatozoal content of epididymal duct, ductus deferens, and ampulla

Answer 38

extragonadal reserves (EGR)

Question 39

enlargements of the ductus deferens that open directly into the pelvic urethra

Answer 39

ampullae

Question 40

paired clands that are dorsocranial to pelvic urethra, secretions of this empty directly into the pelvic urethra, are not a reservoir for spermatozoa

Answer 40

vesicular glands (seminal vesicles)

Question 41

lies in close proximity to the juction between bladder and pelvic urethra

Answer 41

prostate gland

Question 42

paired glands located on either side of the pelvic urethra near ischial arch, usually small and ovoid, produce a viscous secretion that provides gel fraction of ejaculate and causes the seminal plasma to coagulate followin gejaculation

Answer 42

bulbourethral glands

Question 43

specialized distal end of penis, heavily populated with sensory neves

Answer 43

glans penis

Question 44

S-shaped configuaration along shaft of penis, allows the penis to be retracted inside the body, maintained by retractor penis muscles, located in species with a fibroelastic penis

Answer 44

sigmoid flexure

Question 45

pair of smooth muscles attached dorsally to th vertebrae and attached ventrally to the ventrolateral sides fo the penis, when contracted holds penis inside the sheath

Answer 45

retractor penis muscles

Question 46

area of spongy erectile tissue located with in the shaft of the penis

Answer 46

corpus cavernosum

Question 47

area of spongy erectile tissue immediately durrounding the penile urethra

Answer 47

corpus spongiosum

Question 48

paired muscles associatedwith pelvic urethra and penis, relatively short located in the area of root of penis, connect penis to ischial arch

Answer 48

ischiocavernosus muscles

Question 49

striated muscle that surrounds the pelvic urethra in a circular manner, thick, powerful muscle responsible for movement of seminal plasma and spermatozoa into penile urethra

Answer 49

urethralis

Question 50

overlaps root of penis and extends down the caudal and ventral surfaces, covers bulbourethral glands, empties the extrapelvic part of the urethra

Answer 50

bulbospongiosus muscle

Question 51

seminal vesicles, prostate body and disseminate, bulbourethral glands

Answer 51

bull, stallion

Question 52

seminal vesicles, prostate disseminate only, bulbourethral glands

Answer 52

ram

Question 53

seminal vescicles, prostate body and disseminate, bulbourethral glands

Answer 53

boar

Question 54

seminal vesicles, prostate body and disseminate (sometimes), bulbourethral glands

Answer 54

stallion

Question 55

prostate body

Answer 55

dog

Question 56

prostate body, bulbourethral glands

Answer 56

cat

Question 57

seminal vesicles, prostate body only, bulbourethral glands

Answer 57

human