Here are the answers to fill in the worksheets, organized by the body systems shown in the pictures.
Top Worksheet (Reproductive & Endocrine Systems)
1. First Figure (Male Reproductive System)
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Name the Body System: Reproductive System
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What is the Main Function? To produce offspring (babies).
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What is the Main Organ Involved? Testes
2. Second Figure (Female Reproductive System)
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Name the Body System: Reproductive System
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What is the Main Function? To produce offspring (babies).
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What is the Main Organ Involved? Ovaries (or Uterus)
3. Third Figure (Endocrine System - Front View)
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Name the Body System: Endocrine System
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What is the Main Function? To control body activities using hormones (chemical messengers).
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What is the Main Organ Involved? Glands (like the Pituitary gland or Thyroid)
4. Fourth Figure (Endocrine System - Back/Side View)
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Name the Body System: Endocrine System
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What is the Main Function? To regulate growth, metabolism, and mood.
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What is the Main Organ Involved? Adrenal Glands (or Pancreas)
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Middle Worksheet (Nervous, Circulatory, Digestive, Urinary)
1. First Figure (Green lines/Brain)
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Name the Body System: Nervous System
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What is the Main Function? To control body movements and send signals to the brain.
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What is the Main Organ Involved? Brain
2. Second Figure (Red and Blue veins/Heart)
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Name the Body System: Circulatory System (or Cardiovascular System)
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What is the Main Function? To pump blood, oxygen, and nutrients throughout the body.
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What is the Main Organ Involved? Heart
3. Third Figure (Stomach and Intestines)
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Name the Body System: Digestive System
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What is the Main Function? To break down food into energy and nutrients.
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What is the Main Organ Involved? Stomach (or Small Intestine)
4. Fourth Figure (Kidneys)
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Name the Body System: Urinary System (or Excretory System)
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What is the Main Function? To filter waste and extra water from the blood to make urine.
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What is the Main Organ Involved? Kidneys
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Bottom Worksheet (Skeletal, Respiratory, Muscular, Integumentary)
1. First Figure (Bones/Skull)
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Name the Body System: Skeletal System
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What is the Main Function? To support the body, protect organs, and allow movement.
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What is the Main Organ Involved? Bones (Skeleton)
2. Second Figure (Lungs)
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Name the Body System: Respiratory System
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What is the Main Function? To breathe in oxygen and breathe out carbon dioxide.
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What is the Main Organ Involved? Lungs
3. Third Figure (Muscles)
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Name the Body System: Muscular System
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What is the Main Function? To help the body move and keep posture.
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What is the Main Organ Involved? Muscles
4. Fourth Figure (Skin/Nerves on surface)
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Name the Body System: Integumentary System
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What is the Main Function? To protect the body from germs and control temperature.
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What is the Main Organ Involved? Skin
Parent Tip: Review the logic above to help your child master the concept of body systems and functions worksheet.
