Reproductive Flashcards
What is Meiosis
Male: spermatogenesis; Female oogenesis
What are gametes?
Sex cells from 2 successive nuclear divisions.
What is the function of reproductive system?
Propagation of the species
3 Functions of male reproductive system
- Produce/maintain gametes.
- Produce sex hormones.
- Transport sperm to female reproductive tract
What are the primary male sex organs?
Gonades = Testes
What is the endocrine function of the gonads (testes)?
Testosterone production.
What is the exocrine function of the gonads (testes)?
Sperm formation.
What are the external secondary male sex organs?
- Scrotum
2. Penis
What are the internal secondary male sex organs? (7)
Epididymis, vas (ductus) deferens, seminal vesicles, ejaculatory ducts, bulbourethral glands, proste gland, urethra
Where are the testes located?
Scrotum
What is the progression of the testes by birth?
Through the inguinal canal, guided by the gubernaculum.
What does cryptorchidism mean?
Hidden testes
What are 3 other names for Sertoli cells?
- Supporting
- Sustentacular
3 Nurse
What is the function of sertoli cells?
- Support, nourish developing spermatogenic cells
- Mediate effects of FSH/Testosterone cells on spermatogenesis
- From “blood-testis barrier”
Name the 3 parts of a mature sperm cell
- Tail
- Midpiece
- Head
What is the tail of a sperm cell called
Flagellum
Where is mitochondria found in a sperm cell
Midpiece
What two parts make up the head of a sperm cell.
- Nucleus
2. Acrosome
What is the function of the acrosome?
Help the sperm penetrate the egg.
Where is the epididymis?
Posterior surface of the testes, connected to efferent ductules and leads to vas deferens
What is the function of the epididymis?
Major site of sperm storage during maturation and transport of sperm to vas defs.
What is the vas deferens?
Part of spermatic cord along with blood vessels, lymphatics, nerves.
What is the ampulla?
Joins duct of seminal vesicle to ejaculatory duct.
What is the function of the vas deferens?
Transport sperm to ejaculatory duct.
Where are seminal vesicles located?
Posterior bladder
What are the functions of the seminal vesicles?
- Secrete nutrients for sperm (fructose)
2. Secrete prostaglandis
What is special about the prostaglandis secreted by the seminal vesicles?
They are somewhat alkaline and pass into ejaculatory duct at time of emission.
What are the ejaculatory ducts?
Union of ducts of seminal vesicles and vas deferentia.
What is the function of ejaculatory ducts?
Eject sperm, seminal vesicle fluid into prostatic urethra.
What is another name for the bulbourethral glands?
Cowper’s glands?
Where are the bulbourethral glands located?
Sit below the prostate
What are the functions of bulbourethral glands?
Secrete alkaline, mucousy fluid to lubricate penis and lining of urethra
Where is the prostate gland located?
Sits below the bladder.
What are the functions of the prostate gland?
- secretes alkaline fluid
2. Enhances sperm motility
Name two prostate disorders.
- BPH: Benign prostatic hypertrophy/hyperplasia
2. Prostate cancer