Organs and organ systems - Free Printable

Here is the complete solution to all three tasks on the worksheet “Organs and organ systems”:

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1. Body organs — Label the organs in the body

*(Since I cannot see the exact positions of the lines in your image, I will provide the standard labels for a human torso diagram based on common educational diagrams. You can match these to the arrows in your image.)*

Typical organs labeled in such a diagram include (from top to bottom):

- Brain — inside the skull
- Lungs — in the chest cavity, on either side of the heart
- Heart — center of chest, slightly left
- Liver — upper right abdomen
- Stomach — upper left abdomen
- Pancreas — behind the stomach
- Small intestine — coiled in the center of the abdomen
- Large intestine — frames the small intestine
- Kidneys — two bean-shaped organs in the back, below the ribs
- Bladder — lower abdomen, near pelvis
- Reproductive organs — ovaries/testes in pelvic region

> 💡 *Tip: In most school diagrams, the arrows point to these key organs. If you have a specific line pointing to an organ, describe its location and I can help you identify it.*

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2. Organ functions — Complete the table

Match each function with the correct organ from the list:
> testes, brain, stomach, eyes, kidneys, small intestine, ovaries, lung

| Organ | Function |
|------------------|----------------------------------------|
| lung | takes oxygen into the bloodstream |
| stomach | breaks down (digests) food |
| testes | make sperm cells |
| ovaries | make egg cells |
| brain | controls the body’s functions |
| small intestine | absorbs nutrients from food |
| kidneys | produce urine |
| eyes | sense light |

✔ Explanation:
- Lungs are part of the respiratory system — they exchange oxygen and carbon dioxide.
- Stomach secretes acids and enzymes to break down food mechanically and chemically.
- Testes are male reproductive organs that produce sperm.
- Ovaries are female reproductive organs that produce eggs (ova).
- Brain is the control center of the nervous system — coordinates all body functions.
- Small intestine is where most nutrient absorption happens after digestion.
- Kidneys filter blood and remove waste as urine.
- Eyes detect light and send signals to the brain to form images.

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3. Organ systems — Draw a line to match each organ system with the organs it contains

Match the systems on the left with their corresponding organs on the right.

| Organ System | Organs it Contains |
|--------------------|----------------------------------------|
| Reproductive | ovaries, uterus, oviduct |
| Digestive | stomach, intestines, pancreas |
| Circulatory | heart, arteries, veins |
| Excretory | kidneys, liver, skin |
| Sensory | ears, eyes, nerves |
| Nervous | brain, spinal cord, nerves |
| Respiratory | trachea, lungs, diaphragm |

✔ Explanation:

- Reproductive system: Includes organs involved in producing offspring — ovaries, uterus, oviduct (fallopian tubes) in females; testes, prostate, etc. in males (though only female organs are listed here).
- Digestive system: Breaks down food — includes stomach, intestines, pancreas (which produces digestive enzymes).
- Circulatory system: Transports blood — heart pumps blood, arteries carry it away, veins return it.
- Excretory system: Removes waste — kidneys filter blood → urine; liver detoxifies; skin excretes sweat.
- Sensory system: Detects stimuli — eyes (light), ears (sound), nerves transmit signals.
- Nervous system: Controls and coordinates body — brain, spinal cord, and peripheral nerves.
- Respiratory system: Gas exchange — trachea (windpipe), lungs (gas exchange), diaphragm (muscle that helps breathing).

> 📝 *Note: Some organs belong to more than one system (e.g., liver is digestive AND excretory; nerves are sensory AND nervous). The worksheet groups them logically for learning purposes.*

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✔ Final Answer Summary:

Task 1: Label the organs as per standard human anatomy (brain, lungs, heart, stomach, liver, kidneys, intestines, etc.).

Task 2: Table completed as above.

Task 3: Matching pairs as above.

Let me know if you need this formatted as a printable answer sheet or want to check specific arrows from your image!