Exam 4 Flashcards
Function of the Reproductive System
Produce offspring (continue the existence of the species)
Males and Females produce sperm
MALE
Get sperm to egg (oocyte) , ensure the survival of the offspring
MALE
Houses testes; temperature control
SCROTUM
provide nerve/blood
Spermatic cord
move testis to/from the body
Cremaster Muscle
Move testis to/from each other
Dartos Muscle
Produce sperm & hormones
Testis
Sperm production (meiosis); almost continuous from puberty to death. Approximately 300 million per day.
Seminiferous Tubule
Testosterone production
Leydig Cells
Inhibin Production
Sertoli Cells
Tube network to connect seminiferous tubule to epididymis
Rete Testis
Both mitotic and meiotic
Spermatogonia
conduct mitosis and one cell becomes primary spermatocyte (Meiotic)
Spermatogonia
Ends with two secondary spermatocytes
Meiosis I
Ends with four spermatids
Meiosis II
(In testis sperm formation) During movement into epididymis and during storage
spermatid tail develops forming sperm
Stores sperm, allows sperm to mature
EPididymis
Transport sperm from rete testis into head of epididymis
Efferent Ducts
Connects epididymis to Ejaculatory Duct; Transports sperm toward urethra
Vas Deferens
Junction of the vas deferens and seminal vesicle (located in the prostate gland)
Ejaculatory Duct
Accessory glands produce what???
Produce Semen
Produces 60% of semen (contains fructose; high pH)
Seminal vesicle
25% of semen (contains enzymes to maximize sperm mobility)
Prostate Gland
15% of semen (contains mucous for lubrication; high pH, often releases fluids before ejaculation-orgasm)
Bubourethral gland
Semen (During ejaculation, approx. ( ) of semen is released
2.5-5.0
Allows penetration in vagina for sperm release
Penis
contrains erectile tissue
Penis
Increased size, rigidity during reproduction ; decreased size, flexibility for protection when not reproducing
Erectile tissue
functions with urinary system for waster removal (urethra transports sperm and urine
Penis
Urethra transports what???
Sperm and urine
what controls inflow and outflow of blood
Sphinecters
Increase inflow, decrease outflow
Erection
superior portion of penis, two lateral structures, at proximal end, form crus of penis (point of attachment of the body)
Corpi Cavernosa
Inferior portion of penis, at proximal end, forms bulb of penis; at distal end, forms glans penis
Corpus Spongiosum
Swollen distal portion containing many sensory neuron endings
Glans
Folded integument around glans for protection
Prepuce
Sperm remains in epididymis until arousal
Sperm transport
DUring arousal,
sperm travels through vas deferens to ejaculatory duct
if no ejaculation
sperm dies and is washed out during urination
Ejaculation forces sperm
out of penis
Produced by Antier Pituitary Gland, stimulates sperm production
Follicle-stimulating Hormone
Produced by Anterior Pituitary Gland, stimulates testesterone production
Lutenizing Hormone
Produced by Leydig cells in testes, stimulates development of secondary sex traits
Testosterone
Produced by Sertoli cells in testes
Inhibin
Produced when sperm levels increase in seminiferious tubules
Inhibin
Shuts off follicle-stimulating hormone
Inhibin