Test 2 Flashcards
External reproductive structures of the male include:
penis and scrotum
Internal reproductive structures of the male include:
testes, ductus or vas deferens, prostate, ejaculatory ducts, seminal vesicles, and bulbourethral glands
Structures enclosed by the scrotal sac:
testes, epididymides, spermatic cords, and part of the ductus deferens
Testes:
primary male sex glands, paired and found within the male scrotum
Seminiferous tubules:
sperm cell formation, create fluid for ejaculate
The scrotum is 3 degrees cooler than the normal body temperature and will either
sag or rise to maintain temperature
Spermatozoa is produced in:
seminiferous tubules
Spermatozoa matures in:
epididymis as a product of meiosis
Spermatozoa contain:
head, body/mid piece, tail
Epididymis:
oblong structure attached to superior and laterosuperior aspects of the testes whose function is storage and maturation of sperm cells
Vas deferens aka:
ductus deferens
The male reproductive ducts include:
vas deferens, ejaculatory duct and urethra
The ductus deferens (aka vas deferens) is:
16-18” long and extends from the tail of the epididymis to posteroinferior surface of the urinary bladder
Ampulla:
expanded end of the ductus deferens that serves as a reservoir for seminal fluid and unites with seminal vesicles to form ejaculatory duct
Ejaculatory ducts are formed by the union of the:
vas deferens and duct of the seminal vesicle, averages 1/2” long, originates behind neck of bladder and enter the base of prostate
Seminal vesicles is approximately
2” long and situated obliquely on lateroposterior surface of bladder and functions to add fluid volume to ejaculate
Bulbourethral glands aka
Cowper’s glands
Bulbourethral glands secrete fluid into
urethra just prior to ejaculation (pre cum) and lubricate urethra
Prostate:
accessory genital organ averaging 1.25” long and encircles proximal portion of uretha and lies anterior to rectal ampulla
The prostate function is to
produce fluid to give volume to ejaculate
Male semen:
roughly 3-5ml of ejaculate, each ml contains 100 million sperm cells
Functions of male penis:
convey urine (urethra), penetration of female (erectile tissue), passage of semen (urethra)
Erectile tissue:
spongy tissue of penis which engorges with blood to form an erection
Corpus cavernosum (2):
penile erectile tissue
Corpus spongiosum (1):
surrounds the urethra
Glans penis aka:
penile tip
Prepuce aka:
foreskin
Internal structures of the female reproductive system consist of:
ovaries, uterine tubes, uterus, and vagina
Ovaries:
primary female sex glands which produce two hormones (estrogen and progesterone)
Estrogen:
produced by developing ovarian follicles responsible for female characteristics, “preparation” for pregnancy
Progesterone:
produced by the corpus luteum, “preparation” for menstruation
Ovaries:
two small glandular, almond shaped organs located on each side near the lateral wall of the pelvis
the internal secretion of the ovaries:
controls menstrual cycle
The external secretion of the ovaries is:
the ova, the female reproductive cell
Medulla:
core of vascular tissue
Cortex:
outer glandular tissue containing ovarian follicles
Each follicle contains:
one ovum
Graafian follicle:
fully developed ovarian follicle
Ovulation:
extrusion of an ovum by rupture of a follicle
Uterus:
pear shaped muscular organ situated in the central part of pelvic cavity posterior to urinary bladder and anterior to rectal ampulla
The nulliparous uterus is:
about 3” long
Nulliparity:
condition of having borne no children (woman)
The female uterus contains four parts:
Fundus, body, isthmus, and cervix
Fundus:
blunt, rounded superior portion of uterus
Body of uterus:
narrows from the Fundus to the isthmus
Isthmus:
superior part of the cervix; constricted area between the body and cervix
Cervix:
cylindric vaginal end of the uterus
Fornix:
cuff like area surrounding the cervix
The uterine cavity is triangular shaped
when viewed in the frontal plane
Endometrium:
inner mucosal lining of uterine cavity
Functions of the uterus:
receive and retain fertilized ovum until fetal development is complete, and expel mature fetus during birth
Uterine tubes aka:
Fallopian tubes
The uterine tubes collect the
ova released by the ovaries and convey it to the uterine cavity, approximately 3-5” long
Each uterine tube is divided into three parts:
isthmus, ampulla, and infundibulum
Isthmus of uterine tube:
short segment near uterus
Ampulla of uterine tube:
majority of tube
Infundibulum:
terminal, lateral portion or uterine tube, flared in appearance which ends in a series of irregular prolonged processes called fimbriae which “sweep” ova into tube
Zygote:
a fertilized egg
Female external genitalia:
clitoris, labia, bartholins glands
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Clitoris:
sensitive external female generalized containing erectile tissue
Labia:
“lips” of female external genitalia containing major labia and minor labia
Bartholins glands:
provide lubircating fluid for female genitalia located on either side of vaginal opening
Menstrual cycle:
oocytes develops withing ovarian follicle, as follicle grows it produces estrogen, follicle matures (graafian follicle), follicle ruptures (ovulation), oocyte is expelled into peritoneum, follicle now called corpus luteum, corpus luteum slowly breaks down, as it breaks down it produces progesterone
Breast anatomy:
lobular, glandular structures located in the superficial fascia of the anterolateral wall of the thorax which vary considerably in size and shape
Female breasts are
secondary sex characteristics
Breasts and mammary glands are
synonymous
Breasts are usually
cone shaped with the base overlying the pectorals major and serratus anterior muscles
The Axillary tail of the breast
extends upper, lateral base to the Axillary fossa