Reproductive System Functionproduce new life Gonads sex glands ducts tubes and accessory organs can be found in both males and females Male Reproductive System Structures Testes Epididymis ID: 655719
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Slide1
Reproductive System
A&PSlide2
Reproductive System
Function=produce new life
Gonads (sex glands), ducts (tubes), and accessory organs can be found in both males and femalesSlide3
Male Reproductive System
Structures:
Testes
Epididymis
Vas deferens
Seminal vesicles
Ejaculatory ductsSlide4
Male Reproductive System
Structures:
Urethra
Prostate gland
Cowper’s glands
P
enisSlide5
Male Reproductive System
Testes
male gonads (sex glands)
2 testes
Located in scrotum
Produce male sex cells=sperm or spermatozoaSlide6
Male Reproductive System
Testes
Sperm are produced in seminiferous tubules located in testes
Scrotum is outside the body to keep the temperature lower for sperm productionSlide7
Male Reproductive System
Testes
Produce male hormones
Main hormone=testosterone
Testosterone=aids in maturation of sperm Slide8
Male Reproductive System
Testes
Testosterone=responsible for secondary sex characteristics
Secondary sex characteristics=body hair, facial hair, large muscles, deep voiceSlide9
Male Reproductive System
Epididymis
After sperm develop in seminiferous tubules in testes, they enter epididymis
Tightly coiled tube
About 20 feet long
Located in scrotum, above testesSlide10
Male Reproductive System
Epididymis
Stores sperm while
they
mature and become motile
Produces fluid that becomes part of semen
Connects with vas deferensSlide11
Male Reproductive System
Vas (ductus) deferens
Receives sperm and fluid from epididymis
On each testes, it joins with epididymis, extends up into the
abd
cavity, curves behind the bladder & joins with the seminal vesicleSlide12
Male Reproductive System
Vas (ductus) deferens
Passageway & temporary storage for sperm
Tubes that are cut during a vasectomy
Vasectomy=sterilization procedureSlide13
Male Reproductive System
Seminal Vesicles
2 small pouch-like tubes
Located behind the bladder & near junction of vas deferens & ejaculatory ducts
Have glandular liningSlide14
Male Reproductive System
Seminal Vesicles
Lining produces thick, yellow fluid that is rich in sugar & provides nourishment for sperm
This fluid composes a large part of the semenSlide15
Male Reproductive System
Ejaculatory Ducts
2 short tubes
Formed by the joining of the vas deferens & seminal vesicles
Carry sperm & fluids (which together is called semen) through the prostate & into urethraSlide16
Male Reproductive System
Prostate Gland
Doughnut-shaped gland
Located below bladder & on either side of urethra
Produces alkaline secretion that increases sperm motility & neutralizes acidity in vagina Slide17
Male Reproductive System
Prostate Gland
Muscular tissue in prostate contracts during ejaculation (expulsion of semen from body)
This contraction aids in expulsion of semen into urethraSlide18
Male Reproductive System
Prostate Gland
When prostate contracts, it closes off the urethra, preventing urine passage through the urethraSlide19
Male Reproductive System
Cowper’s Glands
AKA bulbourethral glands
2 small glands
Located below prostate & connected by small tubes to urethra
Secrete mucusSlide20
Male Reproductive System
Cowper’s Glands
This mucus is a lubricant for intercourse
This mucus is alkaline, to decrease the acidity of urine residue in the urethraSlide21
Male Reproductive System
Urethra
Tube that extends from urinary bladder to outside of body
Carries urine and semenSlide22
Male Reproductive System
Penis
External male reproductive organ
Also functions in urinary system
Distal end is an enlarged structure=glans penis
Glans penis is covered with a prepuce (foreskin)Slide23
Male Reproductive System
Penis
Circumcision=surgical procedure to remove the foreskin
Made of spongy erectile tissue
During sexual arousal, spaces in this tissue fill with blood causing the penis to become erectSlide24
Female Reproductive System
Structures:
Ovaries
Fallopian tubes
Uterus
Bartholin’s glands
Vulva
BreastsSlide25
Female Reproductive System
Ovaries:
Female gonads
2 small, almond-shaped glands
Located in
abd
cavity
Attached to uterus by ligamentsSlide26
Female Reproductive System
Ovaries:
Contain thousands of small sacs=follicles
Each follicle contains an immature ovum (female sex cell)Slide27
Female Reproductive System
Ovaries:
When ovum matures, follicle enlarges and ruptures to release mature ovum=ovulation
Ovulation usually occurs once every 28 daysSlide28
Female Reproductive System
Ovaries:
Ovaries produce hormones that aid in development of reproductive organs and produce secondary sexual characteristicsSlide29
Female Reproductive System
Fallopian tubes:
2 tubes, attached to either side of the upper part of the uterus
5 inches long
Passageway for ovum from ovary to uterusSlide30
Female Reproductive System
Fallopian tubes:
Lateral ends are located above the ovaries, but not directly connected to the ovaries
Lateral ends have fingerlike projections=fimbriae
Fimbriae help move the ovum into the fallopian tubesSlide31
Female Reproductive System
Fallopian tubes:
Peristalsis moves the ovum through the tubes
Cilia line the tubes and help keep ovum moving toward uterus
Fertilization=union of ovum and sperm, takes place in tubesSlide32
Female Reproductive System
Uterus:
Hollow, muscular, pear-shaped organ
Located behind the urinary bladder and in front of the rectum
It allows for the growth & development of the fetusSlide33
Female Reproductive System
Uterus:
Divided into 3 parts:
Fundus
=top section, where fallopian tubes attach
B
ody
(corpus)=middle section
Cervix
=narrow, bottom section, attaches to vaginaSlide34
Female Reproductive System
Uterus:
Contracts to aid in expulsion of fetus
Menstruation occurs in uterus
Has 3 layers: endometrium, myometrium,
perimetrium
Endometrium
=inner layer, where implantation occursSlide35
Female Reproductive System
Uterus:
Endometrium
=inner, epithelial layer, where implantation occurs
If fertilization doesn’t occur, endometrium deteriorates and causes bleeding=menstruation
Myometrium
=middle, muscle layerSlide36
Female Reproductive System
Uterus:
Myometrium allows for the expansion of the uterus during pregnancy
Myometrium contracts to expel fetus during birth
Perimetrium
=outer, serous membrane layerSlide37
Female Reproductive System
Vagina:
Muscular tube
Connects cervix of uterus to outside of body
Passageway for birth, menstrual flow, & receives sperm
Lined with mucous membrane and
rugae
(to allow for expansion during childbirth and intercourse)Slide38
Female Reproductive System
Bartholin’s glands:
AKA vestibular glands
2 small glands
Located one on each side of the vaginal opening
Secrete mucus for lubrication during intercourseSlide39
Female Reproductive System
Vuvla
:
Includes all structures that form the external female genital area
Mons pubis
=triangular fat pad covered with hair, lies over the pubic areaSlide40
Female Reproductive System
Vuvla
:
Labia
majora
=2 large folds of fatty tissue; covered with hair on their outer surfaces; enclose and protect the vagina
Labia
minora
=2 smaller hairless folds of tissue; located within the labia
majoraSlide41
Female Reproductive System
Vuvla
:
Vestibule
=area of the vulva located inside the labia
minora
; contains openings to urethra and vagina
Clitoris
=erectile tissue; located at junction of labia
minora
; produces sexual arousal Slide42
Female Reproductive System
Perineum
Area between vagina and anus
Perineum also describes the entire pelvic floor in males and femalesSlide43
Female Reproductive System
Breasts
AKA mammary glands
Function=secrete milk (lactate) after childbirth
Milk ducts exit on the surface at nipples