Mature eggs
________ are released from the ovaries into the oviducts.
tail
The structure in a sperm cell which beats to propel the sperm towards the egg.
male sex
The fluids from the ________ glands that make up semen provide nutrients and protection for the sperms, as well as a medium for them to swim in.
Progesterone
maintains the endometrium by causing it to become thicker.
smooth muscles
The ________ in the uterine wall contract to expel the fetus during birth.
placenta
provides nutrients (glucose, amino acids and mineral salts) and oxygen for the embryo.
Cilia
Lined in the inner lining help move the ovum to the uterus.
sexual intercourse
The process during which semen containing sperms is deposited into the vagina of a woman.
sperm
The male gamete, which consists of a head, middle piece and tail.
Semen
a composition of sperm and fluids from the sex glands containing nutrients and enzymes which nourish and activate the sperm, allowing them to swim actively.
birth canal
It forms the ________ through which the baby is born.
Immune Deficiency Syndrome
Acquired ________ (AIDS) is a disease that can be spread through sexual intercourse.
scrotum
The pouch like bag which holds the two testes out of the body.
Spread of HIV
________ can be prevented by: (a) Having protected sexual intercourse.
ovum
The female gamete, which is a large cell containing abundant cytoplasm.
endometrium
The ________ breaks down and flows out of the body.
28
The menstrual cycle normal span time (days)
endometrium
The tissue in females richly supplied with blood vessels and is the site of implantation of the embryo post-fertilisation.
Human Immunodeficiency Virus
It is caused by a virus called ________ (HIV)
uterus
a thick muscular organ in females that can stretch as the fetus increases in size during pregnancy.
large nucleus
It has a(n) ________ containing a haploid set of chromosomes.
seminal vesicles
a pair of glands in males that secrete a fluid that makes up a proportion of semen.
Prostrate gland
a large gland in males which secretes directly into the urethra through several small ducts.
Oviduct
a narrow muscular tube leading from the ovary to the uterus.
Zygote
Fertilized ovum
Embryo
Hollow ball of cells
AIDS
The disease which shows the symptoms: Persistent fever, sweat, swollen glands, chills, weakness and weight loss