science Flashcards
(32 cards)
“Humans begin their lives as a
single cell
contain genetic information which carries unique inherited traits such as skin color or hair color.
chromosomes
Each sex cell, which has ?? chromosomes, is a haploid,
23
a sex cell with 46 chromosomes is a ?
diploid
After the fusion of the egg and the sperm, the resulting fertilized egg, known as
zygote
how many chromosomes does azygote contain?
46
produces sperm cells (male gametes) and delivers them inside the female reproductive system.”
male reproductive system
what are the primary functions of the male reproduction system?
To produce, maintain, transport and nourish sperm and protective fluid (semen)
To discharge sperm within the female reproductive tract
To produce and secrete male sex hormones
it contains the chromosome.
head
what is the cap of the head called?
acrosome
stores the enzymes needed to penetrate an egg cell during fertilization.
acrosome
it contains the mitochondria that supply the energy needed to propel the sperm through the female tract.
midpiece
a powerful flagellum that enables the sperm cell to move.
tail
the male reproductive organ for sexual intercourse and urination.
penis
it is where semen and urine leave the penis through the urethra
penis
This tube allows urine to pass outside the body.
urethra
signals the bladder muscles to tighten, which squeezes urine out of the bladder.
brain
responsible for making testosterone, the primary male sex hormone, and for producing sperm
testis
it has a protective function including the maintenance of optimal temperatures for sperm survival and function.
scrotum
a long, coiled tube that rests on the backside of each testicle. It transports and stores sperm cells that are produced in the testes
epididymis
it transports mature sperm to the urethra in preparation for ejaculation.
vas deferens
a pair of glands found in the male pelvis, which function to produce many of the constituent ingredients of semen. They ultimately provide around 70% of the total volume of semen
seminal vesicle
its primary function is to produce the fluid that nourishes and transports sperm (seminal fluid).
prostate gland
it produces a clear, slippery fluid that neutralizes the acidity of the urine residue in the urethra, helps to neutralize the acidity of the vagina, and provides some lubrication for the tip of the penis during intercourse.
bulbourethral gland