Matching exercise identifying the 11 major organ systems of the human body.
Diagram showing the 11 organ systems of the human body with descriptions and corresponding system names.
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Step-by-step solution for: The 11 Organ Systems of the Human Body Worksheet - WordMint
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Show Answer Key & Explanations
Step-by-step solution for: The 11 Organ Systems of the Human Body Worksheet - WordMint
Here's the correct matching of each numbered description to its corresponding organ system (lettered option), along with a clear explanation for each:
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1. The inner framework of the human body. → C. Skeletal system
*Explanation:* The skeletal system provides structural support and protection for internal organs. It is literally the “inner framework” made of bones and cartilage.
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2. Produces, stores, and eliminates urine that is secreted in the kidneys. → F. Urinary system
*Explanation:* The urinary system includes the kidneys (which filter blood and produce urine), ureters, bladder (stores urine), and urethra (eliminates urine). This is its primary function.
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3. Consists of the GI tract and accessory organs that aid in digestion. → E. Digestive system
*Explanation:* The digestive system includes the gastrointestinal (GI) tract (mouth to anus) and accessory organs like the liver, pancreas, and gallbladder — all working together to break down food and absorb nutrients.
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4. Consists of smooth, skeletal, and cardiac muscles that permit movement, maintain posture, and circulate blood. → D. Muscular system
*Explanation:* The muscular system includes three types of muscle tissue: skeletal (for voluntary movement and posture), smooth (in organs), and cardiac (heart muscle that circulates blood).
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5. Network of cells and fibers → J. Nervous system
*Explanation:* The nervous system is composed of neurons (nerve cells) and supporting glial cells, forming a vast network that transmits signals via nerve fibers (axons/dendrites) to control body functions.
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6. Collection of glands that produce hormones that regulate growth and development and metabolism → K. Endocrine System
*Explanation:* The endocrine system consists of hormone-producing glands (e.g., pituitary, thyroid, adrenal) that regulate metabolism, growth, development, and reproduction through chemical messengers called hormones.
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7. Made up of organs involved in sexual reproduction. → H. Reproductive system
*Explanation:* The reproductive system includes organs like ovaries/testes, uterus/penis, etc., which are responsible for producing gametes and facilitating reproduction.
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8. Network of organs and tissues that aid in breathing. → B. Respiratory system
*Explanation:* The respiratory system includes lungs, trachea, bronchi, and diaphragm — all working together to bring oxygen into the body and expel carbon dioxide.
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9. Network of vessels, tissues, and organs that circulate lymph into the cardiovascular system. → G. Lymphatic system
*Explanation:* The lymphatic system includes lymph nodes, vessels, and organs (like spleen and thymus) that collect and return interstitial fluid (lymph) to the bloodstream and support immune function.
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10. Consists of the heart, lungs, veins, and capillaries that circulate blood and transport nutrients, hormones, carbon dioxide, oxygen, and blood cells → A. Cardiovascular system
*Explanation:* Although “lungs” are technically part of the respiratory system, this description refers to the *circulatory* function — heart, arteries, veins, capillaries — which transport blood and its contents. The inclusion of “lungs” here is likely an error or simplification; the core components listed (heart, veins, capillaries) define the cardiovascular system. Note: The lungs are not part of the cardiovascular system — they are part of the respiratory system. However, since the main focus is circulation of blood, A. Cardiovascular system is still the best match.
> ⚠️ *Note:* Strictly speaking, lungs do NOT belong to the cardiovascular system — they are respiratory. But since the question emphasizes “circulate blood” and lists heart/veins/capillaries, we assume it’s referring to the cardiovascular system despite the misleading mention of lungs. In many educational contexts, these systems are discussed together due to their functional integration.
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11. Protects the body from the external environment. → I. Integumentary system
*Explanation:* The integumentary system includes skin, hair, and nails — the body’s first line of defense against pathogens, UV radiation, chemicals, and physical damage.
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1. C
2. F
3. E
4. D
5. J
6. K
7. H
8. B
9. G
10. A
11. I
Let me know if you’d like a printable version or flashcards for review!
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1. The inner framework of the human body. → C. Skeletal system
*Explanation:* The skeletal system provides structural support and protection for internal organs. It is literally the “inner framework” made of bones and cartilage.
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2. Produces, stores, and eliminates urine that is secreted in the kidneys. → F. Urinary system
*Explanation:* The urinary system includes the kidneys (which filter blood and produce urine), ureters, bladder (stores urine), and urethra (eliminates urine). This is its primary function.
---
3. Consists of the GI tract and accessory organs that aid in digestion. → E. Digestive system
*Explanation:* The digestive system includes the gastrointestinal (GI) tract (mouth to anus) and accessory organs like the liver, pancreas, and gallbladder — all working together to break down food and absorb nutrients.
---
4. Consists of smooth, skeletal, and cardiac muscles that permit movement, maintain posture, and circulate blood. → D. Muscular system
*Explanation:* The muscular system includes three types of muscle tissue: skeletal (for voluntary movement and posture), smooth (in organs), and cardiac (heart muscle that circulates blood).
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5. Network of cells and fibers → J. Nervous system
*Explanation:* The nervous system is composed of neurons (nerve cells) and supporting glial cells, forming a vast network that transmits signals via nerve fibers (axons/dendrites) to control body functions.
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6. Collection of glands that produce hormones that regulate growth and development and metabolism → K. Endocrine System
*Explanation:* The endocrine system consists of hormone-producing glands (e.g., pituitary, thyroid, adrenal) that regulate metabolism, growth, development, and reproduction through chemical messengers called hormones.
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7. Made up of organs involved in sexual reproduction. → H. Reproductive system
*Explanation:* The reproductive system includes organs like ovaries/testes, uterus/penis, etc., which are responsible for producing gametes and facilitating reproduction.
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8. Network of organs and tissues that aid in breathing. → B. Respiratory system
*Explanation:* The respiratory system includes lungs, trachea, bronchi, and diaphragm — all working together to bring oxygen into the body and expel carbon dioxide.
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9. Network of vessels, tissues, and organs that circulate lymph into the cardiovascular system. → G. Lymphatic system
*Explanation:* The lymphatic system includes lymph nodes, vessels, and organs (like spleen and thymus) that collect and return interstitial fluid (lymph) to the bloodstream and support immune function.
---
10. Consists of the heart, lungs, veins, and capillaries that circulate blood and transport nutrients, hormones, carbon dioxide, oxygen, and blood cells → A. Cardiovascular system
*Explanation:* Although “lungs” are technically part of the respiratory system, this description refers to the *circulatory* function — heart, arteries, veins, capillaries — which transport blood and its contents. The inclusion of “lungs” here is likely an error or simplification; the core components listed (heart, veins, capillaries) define the cardiovascular system. Note: The lungs are not part of the cardiovascular system — they are part of the respiratory system. However, since the main focus is circulation of blood, A. Cardiovascular system is still the best match.
> ⚠️ *Note:* Strictly speaking, lungs do NOT belong to the cardiovascular system — they are respiratory. But since the question emphasizes “circulate blood” and lists heart/veins/capillaries, we assume it’s referring to the cardiovascular system despite the misleading mention of lungs. In many educational contexts, these systems are discussed together due to their functional integration.
---
11. Protects the body from the external environment. → I. Integumentary system
*Explanation:* The integumentary system includes skin, hair, and nails — the body’s first line of defense against pathogens, UV radiation, chemicals, and physical damage.
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✔ Final Answer Key:
1. C
2. F
3. E
4. D
5. J
6. K
7. H
8. B
9. G
10. A
11. I
Let me know if you’d like a printable version or flashcards for review!
Parent Tip: Review the logic above to help your child master the concept of 11 human body systems worksheet.
