LAB Reproductive Anatomy
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What two functions do both make and female reproductive organs have?
Both have endocrine AND exocrine functions
What is the endocrine function of the testes?
- production of testosterone in the interstitial cells in the testicles
- (interstitial cells are between the seminiferous tubules)
What is the endocrine function of ovaries?
production of estrogen (by the graafian follicles) & progesterone in the ovaries (and placenta) by the corpus luteum
What is the exocrine function of the testicles?
Sperm is produced in the seminiferous tubules
semen=sperm + accessory gland seminal fluid
Where is sperm produced and how long is it viable?
- Sperm is produced in the testicles outside of the body
- -this leads to a cooler temperature
in 1 tsp of ejaculatory fluid there is ~400,000-500,000 sperm
Sperm is viable for ~24-72 hours
What is seminal fluid composed of and where it is produced?
Seminal fluid is produced..
1. Seminal vesicle: 70% of the fluid and sugar (fructose) for sperm energy
2. Prostate gland: 20-30% of fluid and activation of sperm
3. Cowper's or bulbourethral gland: alkaline cleansing of the urethra
What is the spermatic cord?
- Vas deferens
- Lymph bessels
What is the ejaculation pathway?
seminiferous tubules-->epididymis-->vas deferens/spermatic cord-->common ejactuloatory duct-->prostatic, membranouse, and penile urethra
What is the exocrine function of the ovaries?
- Production of the oocyte
- *also called egg/ovum, when fertilized becomes-->zygote-->embryo
Secondary oocyte is produced by the Graafian Folicle
Where does fertilization of the oocyte take place and how long is the oocyte viable?
Fertilization of the secondary oocyte takes place 1/3 of the way into the fallopian tube (fimbria grabs the egg)
Secondary oocyte is viable for 24 hours
What are similarities between the penis and the clitoris?
Both are anatomically similar
female also has minor accessory glands
How long does it take for the embry to implant in the uterine wall and to initiate placental growth?
takes about 1-14 days
placenta will take over hormone production until birth
*the breast and the placenta are also considered reproductive organs
What are the parts of a sperm?
- -The acrosome (produces lysozyme to get into the egg)
- -Head (contains DNA)
- -Midpiece (contains mitochondria for ATP production)
- -Tail (flagellum)
Name this structure
Graafian Follicle with secondary oocyte
name this structure
seminiferous tubule producing sperm
Name this Structure
In fetal ciruclation, where is O2 high, where is it mixed, and where is it low?
Umbilical vein and ductus verosus- High O2
After the blood leaves the ductus verosus, it becomes mixed and remains mixed until the umbilical arteries
umbilical arteries: low O2 (goes to placenta)
What is the purpose of the umbilical arterty and what does it become after birth?
The umbilical artery brings blood to the placenta for removal
After birth, it becomes the uterine vessels and ligaments
What is the purpose of the umbilical vein and what does it become after birth?
it brings O2 rich blood to the fetus
after birth it becomes the ligamentum teres
What is the purpose of the Ductus venosus and what does it become after birth?
The ductus venosus is high in O2 and bypasses the liver
after birth, it becomes the ligamentum arteriosum
What is the purpose of the Ductus Arteriosus and what does it become after birth?
The Ductus Arteriosus shunts blood away from the lungs by sending it from the PAT to the Aorta
After birth, it becomes the ligametum arteriosum
What is the purpose of the Foramen Ovale and what does it become after birth?
the forman ovale shunts blood from the lungs by taking it from the right atrium to the left atrium
after birth, it becomes the fossa ovalis
What organ serves as the respiratory/digestive/and excretory organ for the fetus?
Be able to label the following (pp 508)
- -uterine horn
- -fallopian tubes
Be able to label the following (pp 506)
- -vas deferens
what are #s 17, 21, 22, 23, and 24?
- 17- umbilical vein
- 21- kidney
- 22- ureter
- 23- genetalial organ
- 24- umbilical cord
What would you like to do?
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