Urinary and Reproductive Systems Flashcards
fuctions include filtering blood plasma of metabolic wastes, electrolye/water homeostasis, and forming urine (filtrate)

Kidney
the medial portion of the kidney where the blood vessles, nerves, and ureter enter/exit the kidney

hilus
blood velssles that branch from the aorta and inferior vena cava, i.e. renal artery and vein, and enter and leave the kidney at the hilus
renal vessels
the surrouding protective layer of the kidney

capsule
lighter colored outer portion of the kidney subjacent to the capsule, contains glomerous, proximal and distal convoluted tubles

renal cortex
continous with the renal cortex, forms a partion between the renal pyramids

renal columns
darker inner portion of the kidney, contains the renal pyramids, the nephron loops, and the collection (pappilary) ducts

renal medulla
cone-shaped masses of tissue in the medula containing the collecting ducts, the base faces the capsule

renal pyramid
the internally pointed bottem portion of the renal pyramids, usually lighter in color, projects into the calyces

papilla
cup-shaped drain which collects discharged urine from the papilla

minor calyx
formed by the union of sveral minor calyces, channels urine to the renal pelvis

major caylx
funnel shaped region formed by the uniting of several major calyces; collects and funnels urine to the ureter

renal pelvis
a microscopic structure, it forms the functional unit of excreation and forms urine by filtering metabolic waste from the blood

nephron
transports blood to the glomerous for filtration

afferent glomerous arteriole
a capillary plexus located between afferent and efferent arterioles that produce filtrate yet prevents the passage of platelets and proteins into the glomerural capsule

glomerulus
the blood vessel through which plasma, platelets, proteins, and blood cells are trasported from the glomerulus to the renal vein and ultimatly to the heart

efferent glomerular arteriole
located in the cortex, the structure surrounding the glomerulus and associated with the proximal convoluted tube

glomerular capsule
the part of the renal tubule that is associated with the glomerulus, responsible for reabsortion of water, nutrients, and electrolytes

proximal convoluted tube
composed of a descending loop and an ascending loop, responsible for the reabsortion of water and elctrolytes

nephron loop
(loop of Henle)
the distal coiled part of the nephron, empties into the collecting duct

distal convoluted tubule
recives urine from distal convoluted tubules of several nephrons, delivers urine to the calyces

collecting (papillary duct)
tubes from the hilus of each kidney that transport urine to the unrinary bladder

ureter
a distendable sac for storage of urine composed of four tissue layers specialized for stretching

unrinary bladder
tiangular region on the posterior bladder formed by the two ureter openings and a single urethral opening

trigone
(texas long horn)
a small tube that externaly trasnports urine from the unrinalry bladder to the urethral orifice

urethra
and invuluntary smooth muscle surrounding the urethra directly inferior to the bladder, prevents urine from leaving the bladder

internal urethral spincter
a voluntary skeletal muscle on the floor of the pelvis (urogenital diaphrgam

external urethral spincter
external opening of the urethra

urethral orifice
diamond-shaped area between the thighs; circumcised by pubic symphysis, ischila tuberosities and coccyx
perineum
a compartment external to the pelvic cavity that supports and protects the testes

scrotum
distinct ridge like seamat the midline of the scrotum
raphe
devides the scrotum into two compartments, one for each testis

median septum
smooth muscle within the wall of the scrotum, funtions involuntarly to maintain the temperature of the testis about three degrees below normal body temperature, ensuring normal spermatogenesis
dartos muscles
skeletal muscle located in the spermatic cord and surrounding the testis, is continous with internal abdominal oblique muscle, elevates testis

cremaster muscle
paired oval shaped organ located within the scrotum for sperm and hormone production

testis
a fiberous connnective tissue layer that directly covers the testis

tunica albuginea
coiled sperm-producing tubes within the lobules of the testis

seminiferous tubules
(anything pinned on the inside of the testis)
convey sperm from the semiiferous tubules to the epididymis

efferent ductules
(model only)
a convuluted tube that acts as a storage area for spermatoza to mature then transports them to the vas deferens, located on the posterior, superior portion of the testis

epididymis
(swimming school)
a tube that transports sperm from the epididymis to the ejaculatory duct then joins with the duct leading from the seminal vesicle

ductus (vas) deferens
a connective tissue cord that runs from the testis through the inguinal ring of the inguinal ligament consists of: ductus deferens, cremaster muscles, testicular arteries, veins and nerves

spermatic chord
a ligament that extends from the crest of the ilium to the pubic tubercle

inguinal ligament
an opening in the inguinal ligament that allows the spermatic cord to pass through the abdominal wall

inguinal canal (superficial inguinal ring)
located behind the urinary bladder, its secretion combines with sperm being transported by the ductus (vas) deferens, secretes fructose, vitamin C, and prostaglandins

seminal vesicle
gland located inferior to the urinary bladder. surrounding the upper part of the urethra; secretions liquify sperm upon ejaculation

prostate
approximatly one-inch long tube formed by the union of the vas deferens and the seminal vesicle duct

ejaculatory duct
(model only)
small paired gland located beneath the prostate gland, secretes mucus into the utethra

bulbourethral gland
(model only)
tube that transports either urine from the bladder or seman from the reproductive glands

urethra
first part of the urethra that passes through the prostate gland

prostatic urethra
middle part of the urethra that transverses the urogenital diaphragm

membranous urethra
(model only)
the last and longest part of the urethra located in the body of the penis

spongy urethra
a cylindrical organ attached to the pubic arch, made of erectile tissue that becomes engorged with blood for copulation

penis
the enlarged terminal portion of the penis, formed by the corpus spongiosum

glans
continous skin covering the glans, removed by circumcision

prepuce
composed of three chambers of erectile tissue

body
paired columns of erectile tissue located dorsally within the penis

corpora cavernosa
midventral erectile tissue that surounds the spongy urethra

corpus spongeiosum
one deep, one superficial, drain blood from penis

dorsal veins
one located in each of the corpra cavernosa, supply erectile bodies with blood

deep arteries
paired almond shaped organ lateral to uterus that produces the ova and secretes estrogen and progesterone

ovary
a fiberous connective tissue layer that surrounds the ovary
tunica albuginea
ciliated projections of the distal uterine tube the cover the lateral portion of the ovary

fimbriae
paired elongated duct through which ova are transported from ovary to the uterus, usual site of fertilization

uterine tube (ovidunct)
the organ in which implantaion of the fertilized egg occures, its wall is compsed of three layers

uterus
the outermost covering of the uterus
perimetrium
the thick middle layer of the uterus composed of smooth muscle
myometrium
the inner mucosal layer of the uterus whiched is shed during menstuation
endometrium
specific layer of the the endometrium that replenishes the endometrium after menstration
stratum basalis
layer that stays
(model only)
specific layer of the endometrium that degenerates during menstration
stratum functionalis
sheds during menstration
(model only)
the rounded superior portion of the uterus

fundus
the larger, main part of the uterus

body
the narrow inferior part of the uterus surounding the external os

cervix
the cervical opening of the uterus into the vagina, dialates during dilivery

external os
a tube inferior to the uterus, the opening of which lies poeterior to teh urethra and inferior to the anus

vagina
superior part of the vagina which surrounds the cervix

fornix
transverse ridges of the internal vaginal lining that permit stretching of the birth canal
vaginal rugae
external opening of the vagina, partially covered by the hymen

vaginal orifice
pea-sized glands located on each side of the vagina, deep to the labia majora, provide lubrication during sexual arousal

vestibular glands
refers to teh external female genitalia

vulva
(triangle)
the fatty part of the female external genitalia overlying the pubic symphysis

mons pubis
part of the female external genitalia lateral to the vaginal opening adn continous with the mons pubis

labia majora
hairless longitudinal folds of skin located medial to the labia majora

labia minora
erectile tissue anterior to the urethral orifice in the female

clitoris
the elongated space enclosed by the labia minora, contains urethra and vaginal obepmings

vestibule
diamond-shaped region inferior to the pelvis containing anal, vaginal, and urethra openings
perineum
site of milk production and secretion

breast
secretory structures within the breasts, function in females during lactation
mammary glands
(model only)
passageway for milk from the alveoli of the mammary gland to the nipple

lactiferous duct
(anything pinned inside the breast)
the central projection of the breast through which the lactiferous ducts exit, comprised partly of erctile tissue

nipple
a pigmented region of the breast that surround the nipple

areola