CBSE Class 3 > Class 3 Notes > Science > Visual Worksheet: Human Body: Organ Systems
Human Body Organ Systems Important Questions - Class 3 Science PDF Download
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Page 1 Internal Organs Look at the pictures and write the names of the internal organs Liver Stomach Small intestine Blader Lungs Kidneys Large intestine Spleen Brain Pancreas Thyroid Heart Page 2 Internal Organs Look at the pictures and write the names of the internal organs Liver Stomach Small intestine Blader Lungs Kidneys Large intestine Spleen Brain Pancreas Thyroid Heart ANSWER KEY Liver Stomach Small intestine Blader Lungs Kidneys Large intestine Spleen Brain Brain Bladder Pancreas Small intestine Heart Stomach Thyroid Large intestine Lungs Kidneys Spleen Liver Pancreas Thyroid Heart Internal Organs Name: Date:Read More
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FAQs on Human Body: Organ Systems Important Questions - Class 3 Science
| 1. What are the major organ systems of the human body? |  |
Ans. The major organ systems of the human body include the circulatory system, respiratory system, digestive system, nervous system, muscular system, skeletal system, endocrine system, urinary system, reproductive system, and integumentary system. Each system has specific functions that work together to maintain the overall health and functionality of the body.
| 2. How do the organ systems work together in the human body? | |
Ans. Organ systems in the human body work together through a complex network of interactions. For instance, the respiratory system provides oxygen to the circulatory system, which then transports it to cells throughout the body. The digestive system breaks down food into nutrients that are absorbed into the bloodstream, while the nervous system coordinates responses and controls the function of other systems. This cooperation ensures that the body functions smoothly and efficiently.
| 3. What is the function of the circulatory system? | |
Ans. The circulatory system, also known as the cardiovascular system, is responsible for transporting blood, nutrients, oxygen, carbon dioxide, and hormones throughout the body. It includes the heart, blood vessels, and blood. This system plays a crucial role in maintaining homeostasis and supporting the body's metabolic processes.
| 4. What role does the nervous system play in the human body? | |
Ans. The nervous system is essential for controlling and coordinating all body activities. It consists of the brain, spinal cord, and nerves. This system processes sensory information, initiates responses, and enables communication between different parts of the body. It controls voluntary movements and involuntary functions, such as heartbeat and digestion.
| 5. How does the digestive system function in the human body? | |
Ans. The digestive system is responsible for breaking down food into smaller molecules that can be absorbed by the body. It includes organs such as the mouth, esophagus, stomach, intestines, liver, and pancreas. Food is mechanically and chemically processed to extract nutrients, which are then absorbed into the bloodstream, while waste products are eliminated from the body.
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Feb 14, 2026 Last updated
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