Respiratory system — main organs?
Trachea, lungs, throat (pharynx)
Circulatory system — key component?
The heart pumps blood throughout the body.
Digestive organs — primary function?
Process food, absorb nutrients, eliminate waste.
Nervous system — central part?
Brain, spinal cord, nerves.
Reproductive system — main organs?
Uterus, ovaries, testicles.
Excretory system — primary organs?
Kidneys filter blood; bladder stores urine.
Lungs — role?
Gas exchange: oxygen in, carbon dioxide out.
Heart — function?
Pumps blood to maintain circulation.
Oesophagus — function?
Transports food from throat to stomach.
Brain — role?
Processes info, controls body functions.
Ovary — function?
Produces eggs and hormones.
Kidney — role?
Filters blood, removes waste, regulates water.
Answer 6 questions on Human Body Systems Overview.
1. What is the windpipe (trachea) in the respiratory system?
2. What is the primary function of the heart in the circulatory system?
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