Lab 16 Flashcards
Gonads
The primary sex organs which produce gametes and sex hormones.
Male = Testes
Female = Ovaries
Scrotum
Oval shaped pouches which hold the testis where sperm is created.
Epididymis
Partially surrounds the testis. This is where sperm are stored and will mature.
Ductus deferens
Extends from the epididymus to the seminal vesicle.
It contains blood vessels, nerves and connective tissue
Seminal vesicles
Stores and produces the majority of the fluid that makes up semen.
Ejaculatory duct
Transfers sperm/semen from the seminal vesicles to the urethra
Prostate gland
Produces fluid that nourishes the sperm
What are the accessory glands of the male reproductive system? And what are their function?
- seminal vesicles
- prostate gland
- bulbourethral glands
Function:
Secrete fluid (semen) which carries the seem during ejaculation, produces nutrients, and neutralize the acidic environment of the vagina
Function of testosterone hormone
It is necessary for the process of spermatogenesis
Uterine tubes
Connects the ovaries to the uterus.
It transports the egg produces in the ovary every month to the uterus.
It is also the site of fertilization (if applicable)
Fimbriae
Small projections of the infundibulum that contain cilia that will propel the egg through the uterine tube into the uterus
Uterus
Functions of nurture the fertilized egg and keep it safe during gestation.
Vagina
Serves as a passageway for infant delivery, menstruation, and receives the penis during intercourse
Steps to spermatogenesis
- Spermatogonia divide by mitosis to from primary spermatocytes
- Each primary spermatocyte undergoes meiosis I to produce 2 haploid secondary spermatocytes
- These secondary spermatocytes undergo meiosis II to produce 4 haploid spermatids
- Spermatids become sperm cells (spermatozoa) by growing a flagellum and shedding their cytoplasm
Steps to oogenesis
- Oogonia divide by mitosis to make several oogonia
- Meiosis I begins and oogonia become primary oocytes
- Primary oocyte undergoes meiosis I in the Graafian follicle to make a secondary oocyte and a polar body
- The secondary oocyte enters meiosis II but remains in metaphase II until fertilized. If fertilized it will complete meiosis II and produce a ovum and a second polar body. If not fertilized it will be shed through menstruation.
