Reproduction Flashcards
Testes
Male gonads which contains seminiferous tubules and interstitial cells
Epididymis
Area for sperm storage and maturation
Sperm gain motility
Vas deferens
A tube that allows sperm to pass from the epididymis to the urethra
Seminal vesicles
Secretes a fluid (semen) which contains
fructose (nourishes sperm)
Prostaglandins, stimulate uterine contractions helping to carry sperm to the females uterine tubes.
Prostate gland
Structure which contributes to the seminal fluid
Secretes an alkaline buffer that protects sperm cells against the acidic environment of the vagina
Cowper’s gland
Adds mucus to the urethra prior to ejaculation to assist Sperm movement and protect them from the acids in the urethra
Urethra
At Tube from the bladder through the penis to the body exterior
Ovaries
Primary reproductive organs site of oogenesis
Fallopian tube’s
Catch the ovum or ova from the ovaries and move them towards the uterus the site of fertilization
Uterus
Hollow muscular organ (womb)
Site of implantation of a fertilized egg
Sheds inner lining if egg is not fertilized in a process called menstruation
Cervix
Narrow opening to the uterus from vagina
Vagina
A muscular organ line with glands that secrete the mucous and acids
Volva
The external genitalia consists of folds called labia
Ovulation
The process whereby the developing follicle ruptures and ovum or ova emerges
Corpus luteum
Develops from the ruptured follicle
Releases the hormone progesterone
Follicle cell
Primary oocyte
Contains 46 chromosomes undergoes meiosis to reduce chromosomes to 23 and form an ovum
Follicle cell
Granulosa
Provide nutrients for the oocyte
Steps of Oogennesis
- Granulosa cells begin to divide enlarging the follicle
- primary Oocyte undergoes meiosis and forms two cells
- follicle continues to enlarge and make sure
- The follicle bursts and releases the secondary Oocyte into the fallopian tube, this is known as ovulation
- The remainder of the follicle becomes the corpus luteum which secretes hormones essential for pregnancy
- secondary oocyte travels down all oviducts until fertilization occurs
Flow phase
Day 1 to 5 menstration
Follicular phase
Days 6 to 13
The follicle develops the, endometrium thickens And develops
Ovulation
Day 14
Oocyte bursts from the follicle
Luteal phase
Days 15 to 28
Corpus luteum develops endometrium dickens
Chorion
Outer membrane surrounding the embryo it produces HCG and forms part of the placenta
Amnion
An inner membrane surrounding the embryo contains amniotic fluid
Yolk sac
Produces fetal blood cells in early development
Allantois
Part of the extra embryonic membrane that forms the placenta and umbilical cord
Ectoderm
Outer
Skin hair nails sweat glands nervous system brain by ear teeth lining of mouth
Mesoderm
Middle
Muscles blood vessels blood kidneys reproductive system bone
cartilage connective tissue
Endoderm
Inner
Liver pancreas thyroid parathyroid bladder lining of the digestive system bone cartilage connective tissue