Chapter 28 Flashcards
Seminiferous tubules
Mile long
Sperm produce and mature
Testicles
Produce spermatozoa
Sex hormones
Interstitial cells
Spaces in between seminiferous tubules
Secrete testosterone and androgen
Urethra
For both urine and semen
Cyrptorchidism
Testes do not descend into scrotal sac
Seminal vesicles
Secrete semen
Prostate gland
Contracts during ejaculation to expel semen through urethra
Bulbourethral (cowpers) gland
Secrete mucus to coat urethra to neutralize pH
Puberty
10-12
Androgen
From hypothalamus gland
Pituitary gland
Gonads
Testosterone
Influences secondary sex characteristics
How long does it take sperm to mature
Two months
Explain sperm parts
Head has 23 chromosomes, head used to break through barrier
Middle is body and has mitochondria/energy
Tail is to steer
Emission
Accumulation of sperm cells and secretion
Three major hormones men produce
Androgen
Testosterone
Prostaglandin