BIO Reprduction (3) Flashcards
Mostly Human Reproduction
What are primary sex organs called?
Gonads
What are the Gonads (primary sex organs) in males and females?
- Testesin males
- Ovaries in females
_____ produce gametes (sex cells) and secrete hormone
Gonads
What are the games (sex cells) in males and females?
- sperm - male gametes (spermatogenesis)
- ova - female gametes (oogenesis)
- Male reproductive system
- seminiferous tubules (spermatogenesis)
- regulated by hormones (GnRH, FSH, LH)
Testes
Enumerate the male reproductive organs
Male Reproductive Organs (Accessory Organs)
Provides a temporary site for the immature sperm
Epididymis
Male Reproductive Organs (Accessory Organs)
Propel live sperm from their storage sites.
Ductus or Vans deferens
Male Reproductive Organs (Accessory Organs)
Carries both urine and sperm to the body exterior
Urethra
Male Reproductive Organs (Accessory Organs)
Produce about 60% of seminal fluid, the fluid volume of semen
Seminal vesicle
Male Reproductive Organs (Accessory Organs)
Secretes fluid that nourishes and protects sperm
Prostate gland
Male Reproductive Organs (Accessory Organs)
Produces thick and clear mucus that cleanses the urethra of traces of acidic urine and serves as a lubricant during sexual
Bulbourethral gland or Cowper’s gland
Male Reproductive Organs (Accessory Organs)
A milky white, somewhat sticky mixture of sperm and accessory gland secretions. The liquid portion is a transport medium for nutrients and chemicals that protect the sperm and aid their movement.
Semen
Male Reproductive Organs (External organ)
Protect the testes and to keep them at a temperature several degrees below the normal body temperature.
Scrotum
Male Reproductive Organs (External organ)
Designed to deliver sperm into the female reproductive tract
Penis
- production of sperm cells
- begins at _____ and continues throughout life
- Spermatogenesis
- puberty
Spermatogenesis occurs in the _____
seminiferous tubules
Enumerate the female reproductive organs
Female Reproductive System (Duct system)
The _____ are small, oval-shaped glands on either side of the uterus. It produces eggs and hormones.
Ovaries
Female Reproductive System (Duct system)
Provide a site for fertilization
Uterine (Fallopian) Tubes
Female Reproductive System (Duct system)
Hollow organ that functions to receive, retain, and nourish a fertilized egg
Uterus
Female Reproductive System (Duct system)
- Thin-walled tube 8cm to 10cm (3-4inches) long
- often called the birth canal since it provides a passageway for the delivery of an infant and for the menstrual flow to leave the body
- female organ of copulation
Vagina
Female Reproductive System (External genitalia)
- fatty area overlying the pubic symphysis
- covered with pubic hair after puberty
Mons pubis
Female Reproductive System (External genitalia)
skin folds
Labia
- Labia majora
- Labia minora
Female Reproductive System (External genitalia)
Enclosed by labia majora
Vestibule
Female Reproductive System (External genitalia)
- Contains erectile tissue
- Corresponds to the male penis
Clitoris
Menstrual Cycle
- The average is _____ days, but ranges from 21-35 days.
- Days _____ are when a female has her period.
- After the period, an ____ is matured in the ovary.
- The _____ builds up blood and tissue.
- The mature ovum is _____.
- If _____, it attaches to the uterine lining.
- If not fertilized, lining breaks down and there is _____.
- 28 days
- Days 1-5
- ovum
- uterine line
- released
- fertilized
- another period
Production of egg cells.
Oogenesis
The period in which a woman’s reproductive capability gradually declines and then finally end is called _____.
menopause
Hormone (Male Reproductive Hormones)
- Testosterone
- Follicle-stimulating hormone (FSH)
- luteinizing hormone (LH)
- gonadotropin-releasing hormone (GnRH)
- hypothalamus
- stimulates secretion of FSH and LH
gonadotropin-releasing hormone (GnRH)
- pituitary gland
- promotes the production of testosterone by the interstitial cells
luteinizing hormone (LH)
Hormone (Male Reproductive Hormones)
- pituitary gland
- stimulates the production of sperm cels in the seminiferous tubules
follicle-stimulating hormone (FSH)
Hormone (Male Reproductive Hormones)
- interstitial cells
- stimulates spermatogenesis
- promotes and regulates the development of secondary sexual characteristics
- associated with sex drive levels
testosterone
Hormone (Female Reproductive Hormones)
- pituitary
- stimulates the ovulation and the formation and maintenance of the corpus luteum
luteinizing hormone (LH)
Hormone (Female Reproductive Hormones)
- pituitary
- stimulates the development of the follicle cells in the ovary
follicle-stimulating hormone (FSH)
Hormone (Female Reproductive Hormones)
- corpus luteum (ovary)
- inhibits ovulation, inhibits uterine contractions, firms the cervix, and stimulates the endometrium
progesterone
Hormone (Female Reproductive Hormones)
- follicle cells (ovary)
- inhibits growth of facial hair, initiates secondary sexual characteristics, and causes thickening of the endometrium
estrogen