science 3rd quarter

Cards (106)

  • serve to carry the genomic information from cell to cell
    chromosomes
  • single set of chromosomes in an organism's cell
    haploid
  • two complete sets of chromosomes, one from each parent
    diploid or somatic cell
  • an oval-shaped organ inside the protective sac of the skin
    testes
  • protective sac of skin of the testes
    scrotum
  • this is the needed temperature of the testes/scrotum to properly produce sperm lower than the body temperature
    1 to 3 degrees
  • a clusters of hundreds of compartments w/ many tiny coiled tubes inside the testes
    seminiferous tubules
  • stimulates secretion of sex hormone testosterone
    luteinizing hormone (LH)
  • along w/ testosterone, stimulates sperm production in the seminiferous tubules
    follicle-stimulating hormone (FSH)
  • this is produced by Leydig cells, found between the seminiferous tubules, responsible for secondary male characteristics
    testosterone
  • where sperm cells mature after being produced by seminiferous tubules
    epididymis
  • where sperm cells travel after being mature to the epididymis
    vas deferens
  • where sperm cells exits the body, a larger tube which urine passes and exits the body
    urethra
  • parts of sperm: it contains the chromosomes, made of nucleus
    head
  • parts of sperm: contains mitochondria
    midpiece
  • parts of sperm: responsible for the sperm's movement, powerful flagellum enable the sperm call to move
    long tail
  • where sperm cell head are made of
    nucleus
  • a cap of a head of sperm cells, stores the enzymes needed to penetrate an egg cell
    acrosome
  • contains mitochondria that supply the energy needed
    maprece
  • it closes the urinary tract, allows the sperm to exit the body
    prostate gland
  • fluid rich in sugars, sperm cell use it for energy
    seminal vesicles
  • alkaline fluid neutralizes traces of acidic urine in the urethra
    bulbourethral glands
  • through ejaculation sperm exits the penis, sperm swim to encounyter the egg cell

    ejaculation
  • how many semen expelled during ejaculation
    3.5 milliliter
  • how many sperm cell produced during ejaculation
    300 to 400 million
  • how many sperm cell in just one drop
    5 to 10 million
  • its responsible for developing female sexual characteristics
    estrogen
  • what is the term for first menstrual period, that occurs between the age 10 to 16, average of onset 12.4 years
    menarche
  • it reduces the number of chromosomes in gametes
    meiosis
  • its responsible for reproducing eggs
    ovaries
  • egg cell starts to mature around and 11 to 14 years old

    11 to 14 years old
  • its a process of fertilization occur, female reproductive system will began to nourish and protect the fertilized egg during nine months of development
    gestation or pregnancy
  • how many egg cells females have after they're born
    2 or two million eggs
  • number of egg cells would have gone down to about 400,000 during this stage

    puberty
  • how many chromosomes does egg cell contain
    23 chromosomes
  • how many egg cell will only mature
    300 to 500 egg cell
  • what do you call a mature egg cell
    ova or ovum
  • how many days does ova released from the ovary of an adult female
    28 days
  • it sweep the ovum travel inside the fallopian tubes
    cilia
  • how many days ovum travel inside the fallopian rube?
    3 to 4 days