WorksheetsEndocrine & Reproductive Review
Total questions: 37
Worksheet time: 20mins
What hormone does the pituitary release? What organ signals the pituitary to release this hormone?
The thyroid stops producing thyroxine
The hypothalamus releases the hormone TSH because the pituitary signals it to do so.
The pituitary releases the hormone TSH because the hypothalamus signals it to do so.
What happens at point A?
The thyroid stops producing TSH
The pituitary stops producing TSH.
The hypothalamus stops producing TSH.
What happens at point B?
The thyroid stops producing thyroxine.
The pituitary stops producing TSH.
The hypothalamus stops producing TSH.
Why is the cycle illustrated in this diagram called a negative feedback system?
When the amount of a hormone in the blood reaches causes the body to react negatively, disrupting the glands releasing that hormone
When the amount of a hormone in the blood reaches the right level, the gland stops releasing that hormone
The pituitary releases the hormone TSH because the hypothalamus signals it to do so.
Sperm are produced in the organs called ____________________.
scrotum
endocrine system
testes
penis
The hormone ____________________ controls the development of male characteristics.
estrogen
testostrone
sperm
egg
The hormone ____________________ controls the development of female characteristics.
estrogen
testostrone
sperm
egg
Adrenaline is to the adrenal glands as...
testosterone is to the ovaries
estrogen is to the testes
estrogen is to the ovaries
testosterone is to the testes
A sperm and egg join to form a fertilized egg, which is called a(n) ____________________.
baby
fetus
zygote
menstruation
The lining of the ____________________ builds up with extra blood and tissue to prepare for a fertilized egg.
vagina
uterus
oviduct
cervix
The monthly cycle of changes in the female reproductive system is called the ____________________ cycle.
birth
hormonal
menstrual
puberty
Fertilization usually takes place in the ____________________, or passageways for eggs.
ovaries
uterus
vagina
oviducts
One important function of ovaries is to produce ____________________ cells.
sperm
new
baby
egg
The endocrine system controls the amount of a particular ____________________ in the blood by stopping its release when it reaches a certain level.
hormone
glands
eggs
sperm
The endocrine system maintains ____________________, or internal balance, through negative feedback.
criteria
homeosapien
homeostasis
menstruation
The release of a mature egg into an oviduct is called menstruation.
True
False, fertilization
False, ovulation
Sex cells contain twice as many chromosomes as other body cells. _________________________
True
False, the same
False, a quarter
False, half
The male sex cell is called a sperm.
True
False, egg
False, testostrone
False, estrogen
The organs of the endocrine system produce chemical messengers called enzymes.
True
False, chemicals
False, enzymes
False, hormones
The endocrine system
does not begin to function until after puberty.
controls many body activities through a system of nerves.
produces chemicals that travel to selected locations through tiny tubes.
controls both daily activities and long-term changes through hormones.
When a human egg is not fertilized, extra blood and tissue from the uterus are released through the vagina in a process called
menstruation.
elimination.
ovulation.
reproduction.
Human eggs are usually fertilized in the
uterus.
oviduct.
ovary.
cervix.
Eggs are produced in the
ovaries
oviducts
uterus
vagina
Sperm are produced in the
bladder
scrotum
testes
urethra
The endocrine system often uses a negative feedback process to
bring about fertilization.
control the production of eggs and sperm.
maintain homeostasis.
produce the proper number of chromosomes.
Which endocrine gland(s) communicates with the hypothalamus to control many body activities, including growth from infancy to adulthood?
adrenal glands
pancreas
pituitary gland
thyroid gland
Which endocrine gland(s) link(s) the endocrine system and the nervous system?
hypothalamus
parathyroid glands
pituitary gland
thyroid gland
The endocrine system acts on the body through chemical products called
hormones
blood and saliva
sugars
target cells
Nutrients from the mother pass to the developing embryo through a membrane called the
vagina.
placenta.
cervix.
amniotic sac.
In a female’s body, an egg develops in an ovary and the uterus prepares for the arrival of a fertilized egg during
homeostasis.
labor and delivery.
pregnancy.
the menstrual cycle.
A mature egg is released from the ovary during a process called
oviduct.
ovulation.
menstruation.
fertilization.
Where does a fertilized egg develop after it leaves the oviduct?
in the cervix
in an ovary
in the uterus
in the vagina
Which of the following structures is formed when fertilization occurs?
egg
ovary
sperm
zygote
Which of the following is an example of negative feedback in the endocrine system?
When a hormone travels through the bloodstream, it will interact only with its target cells.
After age 40 or so, people’s muscle strength begins to decrease and their skin starts to wrinkle.
When people are startled by a frightening event, their heart beats faster.
When the amount of a hormone reaches a certain level, the endocrine system stops the release of that hormone.
The way the endocrine system maintains homeostasis is often compared to a(n)
violent thunderstorm that startles people and increases their heartbeat.
heating system that turns a furnace on and off to control a room’s temperature.
monthly cycle that releases an egg from an ovary.
period of human development that takes about nine months to be completed.
Why do hormones cause changes only in specific body organs?
A hormone is carried to a specific location by tiny tubes.
A hormone interacts only with target cells, which fit together with that hormone.
A hormone is produced only in the location where it is needed.
A hormone works only through negative feedback.
Asexual reproduction is different from sexual reproduction because in asexual reproduction?
the offspring is genetically different than the parent
the offspring is genetically identical to the parent
the offspring has many other offspring
produces variation in the species.
