# Chapter 4. Our Body – Our Organ Systems (Class 5 – Our World) - Link: https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/ - Published: 2026-02-10T22:16:19+05:30 - Author: MAHENDRA MANCHIKALAPATI ## **Chapter 4. Our Body – Our Organ Systems****⏎ (Class 5 – Our World) ## Table of Contents * [Chapter 4. Our Body – Our Organ Systems(Class 5 – Our World)](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#chapter-4-our-body-our-organ-systemsclass-5-our-world) * [Improve Your Learning](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#improve-your-learning) * [I. Conceptual Understanding](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#i-conceptual-understanding) * [1. Name the parts of the circulatory system.](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#1-name-the-parts-of-the-circulatory-system) * [2. Which system is responsible for our body’s movement?](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#2-which-system-is-responsible-for-our-bodys-movement) * [3. What is inhalation and what is exhalation?](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#3-what-is-inhalation-and-what-is-exhalation) * [II. Questioning and Hypothesis](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#ii-questioning-and-hypothesis) * [4. If you have a chance to meet a doctor (cardiologist), what type of questions would you ask about the heart?](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#4-if-you-have-a-chance-to-meet-a-doctor-cardiologist-what-type-of-questions-would-you-ask-about-the-heart) * [III. Experiments and Field Observations](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#iii-experiments-and-field-observations) * [5. Place your hand on the heart and feel the heartbeat carefully. Run for some time and feel it again. Do you find any difference? Write the difference with reasons.](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#5-place-your-hand-on-the-heart-and-feel-the-heartbeat-carefully-run-for-some-time-and-feel-it-again-do-you-find-any-difference-write-the-difference-with-reasons) * [IV. Information Skills and Projects](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#iv-information-skills-and-projects) * [6. Visit a doctor or a nurse nearby and ask the functions of vital organs. Make a brief note.](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#6-visit-a-doctor-or-a-nurse-nearby-and-ask-the-functions-of-vital-organs-make-a-brief-note) * [V. Drawing and Model Making](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#v-drawing-and-model-making) * [7. Draw the following on a chart. Label them and display them in the classroom:](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#7-draw-the-following-on-a-chart-label-them-and-display-them-in-the-classroom) * [VI. Appreciation](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#vi-appreciation) * [8. What amazes you in these body parts? Write down.](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#8-what-amazes-you-in-these-body-parts-write-down) * [Today’s Deals](https://thecuriosi.com/class-5/class-5-evs/our-body-our-organ-systems/#todays-deals) Based on Chapter 4, “**Our Body – Our Organ Systems**” from the Class 5 EVS textbook, here are the answers to the **“Improve Your Learning”** section. [APSCERT](https://cse.ap.gov.in), ANDHRA PRADESH ## **Improve Your Learning** ### **I. Conceptual Understanding** ### 1. **Name the parts of the circulatory system.** • The circulatory system consists of: • Heart • Blood • Blood vessels (arteries and veins). ### 2. **Which system is responsible for our body’s movement?** • The **Skeletal System** and **Muscular System** together support body movement. ### **3. What is inhalation and what is exhalation?** • **Inhalation:** The process of taking in oxygen-rich air into the lungs. • **Exhalation:** The process of expelling carbon dioxide and water vapor from the lungs. ## **II. Questioning and Hypothesis** ### **4. If you have a chance to meet a doctor (cardiologist), what type of questions would you ask about the heart?** • What is the role of the heart in the circulatory system? • How can we keep our heart healthy? • What causes heart diseases? • How many times does the heart beat in a day? • Why do athletes have slower heart rates? ## **III. Experiments and Field Observations** ### **5. Place your hand on the heart and feel the heartbeat carefully. Run for some time and feel it again. Do you find any difference? Write the difference with reasons.** • **Observation:** The heartbeat increases after running. • **Reason:** When we run, our muscles need more oxygen to produce energy. The heart beats faster to pump more oxygen-rich blood to the muscles and remove carbon dioxide efficiently. ## **IV. Information Skills and Projects** ### **6. Visit a doctor or a nurse nearby and ask the functions of vital organs. Make a brief note.** • **Brain:** Controls all body functions and processes messages from sensory organs. • **Heart:** Pumps blood, transporting oxygen and nutrients to the body. • **Lungs:** Absorb oxygen and expel carbon dioxide during respiration. • **Kidneys:** Filter blood and remove waste materials as urine. • **Liver:** Helps in digestion and detoxifies harmful substances. ## **V. Drawing and Model Making** ### **7. Draw the following on a chart. Label them and display them in the classroom:** • **i) Digestive System**: Include parts like mouth, oesophagus, stomach, small intestine, large intestine, rectum, and anus. ![the digestive system](https://thecuriosi.com/wp-content/uploads/2024/11/The-Digestive- System-1024x1024.webp) • **ii) Excretory System**: Include kidneys, ureters, bladder, and urethra. ![Excreatory system](https://thecuriosi.com/wp-content/uploads/2024/11/Excreatory- System-1024x1024.webp) ## **VI. Appreciation** ### **8. What amazes you in these body parts? Write down.** • The brain amazes me as it controls the entire body like a supercomputer. • The heart pumps blood tirelessly, ensuring the survival of the body. • The digestive system breaks down complex food into nutrients efficiently. • The lungs provide oxygen, which is essential for energy. • The kidneys filter impurities, keeping our blood clean. ## 󠀁[Today’s Deals](https://amzn.to/4019Gi5)󠁿 Title [Tefal Puregrind Mixer Grinder, 800W Heavy-Duty Copper Motor, Adva…](https://www.amazon.in/dp/B0FC6CS2L1?tag=thecuriosi10b-21) [Bajaj Military Series Rex 750W 4 Jar Mixer Grinder | DuraCut Blad…](https://www.amazon.in/dp/B0DCW2V9KW?tag=thecuriosi10b-21) [Philips HL7756 Mixer Grinder 750 watt with 3 Stainless Steel Jars…](https://www.amazon.in/dp/B01GZSQJPA?tag=thecuriosi10b-21) [Prestige Iris 750 Watt Mixer Grinder with 4 Jars (3 Stainless Ste…](https://www.amazon.in/dp/B08CFJBZRK?tag=thecuriosi10b-21) [Bajaj GX-1 Mixer Grinder 500W | Superior Mixie For Kitchen | 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