QUESTIONS WITH ANSWERS GRADED A+
◉digestive system. Answer: Takes in nutrients, breaks them down,
and eliminates unabsorbed matter (feces).
◉respiratory system. Answer: Takes in oxygen and eliminates
carbon dioxide. The gaseous exchanges occur through the walls of
the air sacs of the lungs.
◉nervous system. Answer: As the fast acting control system of the
body, it responds to internal and external changes by activating
appropriate muscles and glands.
◉endocrine system. Answer: Glands secrete hormones that regulate
processes such as growth, reproduction, and nutrient use
(metabolism) by body cells.
◉skeletal system. Answer: Protects and supports body organs,
and provides a framework the muscles
use to cause movement. Blood cells
are formed within bones. Bones store minerals.
, ◉muscular system. Answer: Allows manipulation of the
environment,
locomotion, and facial expression.
Maintains posture, and produces heat.
◉lymphatic system. Answer: Picks up fluid leaked from blood
vessels
and returns it to blood. Disposes
of debris in the lymphatic stream.
Houses white blood cells (lymphocytes)
involved in immunity. The immune
response mounts the attack against
foreign substances within the body.
◉reproductive system. Answer: Overall function is production of
offspring. Testes produce sperm and male sex hormone, and male
ducts and glands aid in delivery of sperm to the female reproductive
tract. Ovaries produce eggs and female sex hormones. The
remaining female structures serve as sites for fertilization and
development of the fetus. Mammary glands of female breasts
produce milk to nourish the newborn.
◉survival needs. Answer: in appropriate amounts necessary for life
- too little or too much is harmful