Glossary of Reproductive systems
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- inner glandular layer of the inner wall of the uterus; has two parts:
1- Functional zone (innermost)
2- Basilar zone
- Functional Zone of Endometrium
- innermost layer; contains uterine glands and contributes to this layer's thickness. Supplied by spiral arteries
- Basilar Zone of Endometrium
- Outer Endometriume; connects the functional zone to the myometrium;
-Fed by straight arteries.
- Bloody Supply to Uterus
- Uterine Artery branches from Int. Iliac
-Gives arcuate branches in myometrium;
-Give straight and spiral branches to basilar and functional zones of endometrium.
- round ligaments of the uterus
- -lateral uterine sides; just inferior to base of uterine tubes (fallopian).
-pass through inguinal canal to connective tissue of external genitalia.
- a musculomembranous canal from the cervix to the vestibule of external genitalia
- External genitalia (5)
- mons pubis
- mons pubis
- the fat pad over the pubic bone
- labia majora
- outer layer of tissue
- labia minora
- inner layer of tissue
- the emale homologue of the penis
- Two holes:
-a. urethral orifice
-b. vaginal orifice
-Vestibular glands; embedded in vaginal walls, secrete lubrication
- tunica albuginea
- white coat of fascia that surrounds the testes; covered by tunica vaginalis.
- Fallopian (uterine) tube
- permits the passage of an ovum from the peritoneal cavity to the uterus
- constriction of uterus that divides the superior fundus from the inferior cervix; beginning of the fallopian tube
- extends from the isthmus (off the fundus of uterus) to the infundibulum (near the end of the uterine tube).
- infundibulum and fimbria
- the end of the road; end of fallopian tube
- broad ligament
- covers the ovaries, ligaments, and uterine structures from a posterior view.
- the organ in which the fertilized ovum will implant
- the superior portion of the uterus
- inferior portion of the uterus
- recess around the circular opening of the cervix
- Layers of the Uterus
- serous membrane continuous with peritoneal lining; outermost layer of the uterus; connective tissue
- thickest layer of the uterus; smooth muscle in its wall
- paired organs located in the scrotum for a cooler environment.
- tunica vaginalis
- a serious membrane; double layer that covers both testes and also lines the scrotal cavity
- cremaster muscle
- continuous with abdominis rectus, this muscle senses temp changes to maintain the needed environment for testes. Just under the skin of the testes; covers the actual testes.
- lays overtop of the testes inside scrotum; Head, Body, and tail.
Stores sperm cells until they mature.
continuous w/ vas deferens.
- Seminiferous tubules
- roughly 800 tightly coiled tubules in the testes; produce sperm via spermatogenesis.
- interstitial cells
- found between seminiferous tubules; produce testosterone.
- Sertoli sustenticular cells
- supporting cells of the seminiferous tubules and testes. support the process of spermatogenesis.
- a stem cell becomes a spermatocyte, then a spermatid.
- a Spermatid matures; becomes a spermatozoan.
- The spermatozoan distaches from the wall of sustenticular cells and is released into the seminiferous tubule lumen; its now a sperm cell.
- Amount of semen constituent produced by testes
- spermatozoan anatomy
- head, middle piece, tail
- head of spermatozoan
- contains the nucleus; densly packed chromosomes. also, the acrosome; contains enzymes released to break down ovocytes.
- tail of spermatozoan
- accessory glands of male reprod. system
- seminal vesicle
- vas deferens
- -begins at epididymus tail; runs up into abdominal cavity through inguinal canal; part of spermatic cord.
-Loops over the bladder to the seminal vesicle.
- seminal vesicle
- empties its contents, 60% of semen, into the junction of the vas deferens ampulla at the start of the ejaculatory duct.
- prostate gland
- constitutes 30% of semen
- bulbourethral gland
- contributes 5% of semen
- Structure of Urethra
- 3 parts:
- Prostatic Urethra
- Behind/under the bladder, where ejaculatory duct and seminal vesicle ducts join to flow into the prostatic urethra.
- male organ serving reproductive and urinary function
- external urethral meatus
- opening of penis
- corpora cavernosa
- two cavernous bodies; columns of erectile tissue that extend the length of the top of the penis; function in erection.
- corpus spongiosum
- erectile tissue, but this surrounds the penile urethra, under the corpora cavernosa. During erection these squeeze the urethra shut so urine is not ejected along with semen.
- Inguinal canals.
- links the scrotum to the peritoneal cavity. Spermatic cord passes through it from superficial ring to internal. A weakening in the abdominal fascia, can result in hernias.
- Superficial inguinal ring
- where the spermatic cord exits from peritoneal cavity and internal ring via inguinal canal to testes.
- Spermatic cords (5 contents)
- passes from internal inguinal ring to superficial via inguinal canal; contains
-Pampiniform Plexus of veins
- Ovarian ligamnt
- connects the ovaries to the uterus
- suspensory ligament
- connects the ovaries to the abdominal wall and superiorly; contains the ovarian artery/vein
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