COMPLETE ANSWERS GRADED A+
⩥ Respiratory system.
Answer: System that allows breathing and gas exchange by bringing
oxygen into the body and removing carbon dioxide.
⩥ Autonomic nervous system.
Answer: Part of the nervous system that controls involuntary functions
like heart rate, breathing, and blood pressure.
⩥ Endocrine system.
Answer: System that releases hormones to regulate body functions such
as metabolism, growth, and stress response.
⩥ Lymphatic and immune systems.
Answer: Systems that help fight infection and maintain fluid balance by
filtering harmful substances through lymph nodes.
⩥ Digestive system.
Answer: System that breaks down food into nutrients that the body can
absorb and use for energy.
, ⩥ Urinary system.
Answer: System that removes waste and excess fluid from the blood and
maintains fluid and electrolyte balance.
⩥ Reproductive system.
Answer: System responsible for producing offspring and regulating
reproductive hormones.
⩥ Arteries.
Answer: Blood vessels that carry oxygen-rich blood away from the heart
under high pressure.
⩥ Veins.
Answer: Blood vessels that return oxygen-poor blood back to the heart
and contain valves to prevent backflow.
⩥ Capillaries.
Answer: Tiny blood vessels where gas and nutrient exchange occurs
between the blood and body tissues.
⩥ Ventilation.
Answer: The movement of air in and out of the lungs.