--- title: The heart, blood and breathing — how Mova does on the tests · World description: Lesson 32 of the world course of Mova's primary school: 7 of 13 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/school-run/world/32-heart-blood-breathing/) [home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [World](https://md.mova.elamur.ai/free/en/school-run/world/) / 32 # The heart, blood and breathing **Tests:** 7 of 13 right · **Exam:** 1 of 4 right · **Kind:** ★ · **Understood:** 9 of 17 · **Run:** 2026-10-18, commit `f3c23ea72` Lesson 32 of the world course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: [the lesson in the corpora](https://md.mova.elamur.ai/free/en/corpora/school/world/32-heart-blood-breathing/). Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/). ### Test 1 · ★ · wrong ✗ {#t1} A boy holds his breath. Why can he not do it for long? - **1.** His blood would run out of water — **← Mova's choice** · no support - **2.** His heart would stop beating at once — no support - **3.** His cells need a steady supply of oxygen — **✓ the right answer** · no support - **4.** His lungs would burst at once — no support **Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t1/) ### Test 2 · ★ · wrong ✗ {#t2} Which is true? - **1.** We breathe out mostly oxygen and hardly any carbon dioxide at all — **← Mova's choice** · no support - **2.** Veins carry blood away from the heart — no support - **3.** Blood picks up oxygen in the lungs and carries it to the cells — **✓ the right answer** · no support - **4.** The heart makes oxygen and sends it to the lungs — no support **Why:** Nothing it remembers matched the question, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t2/) ### Test 3 · ★ · wrong ✗ {#t3} A nurse presses two fingers on your wrist and counts. What is she measuring? - **1.** How deep you breathe — **← Mova's choice** · no support - **2.** How fast your heart beats — **✓ the right answer** · no support - **3.** How strong your bones are — no support - **4.** How hot your blood is — no support **Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t3/) ### Test 4 · ★ · wrong ✗ {#t4} If the arteries to a leg were blocked, what would the leg lose first? - **1.** Its nerves only — **← Mova's choice** · score 5 - **2.** Its skin colour forever — score 5 - **3.** Its bones — score 5 - **4.** Its supply of oxygen — **✓ the right answer** · score 5 **Why:** It took the question to ask what it is done to. It chose option 1 with score 5, tied with another option at 5 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 25, line 2: «A frog starts as an egg in a pond, hatches into a tadpole that swims and breathes with gills, then grows legs, loses its tail and becomes a frog that can live…», reached through the remembered sentence the question matched. What matched: the same doer «legs» (+4); the same action «lose» (+3). Against it: a different thing acted on (counts against) (-2). The right option, 4, scored 5. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t4/) ### Test 5 · ★ · right ✓ {#t5} Why do your lungs have millions of tiny air bags instead of one big empty bag? - **1.** Many tiny bags give a huge surface for oxygen to pass through — **← Mova's choice** · **✓ the right answer** · score 3 - **2.** Tiny bags keep germs warm — no support - **3.** Big bags would make the voice too loud — no support - **4.** Tiny bags are lighter than one big bag — no support **Why:** It took the question to ask why something happens (its cause). It chose option 1 with score 3, the only option with support. Its support: lesson 32, line 8: «In the lungs oxygen passes from the air into the blood; millions of tiny air bags give a huge surface for it to pass through.», reached through the option's own match among the sentences about the question's things. What matched: the same action «give» (+2); its «because» matches the remembered cause (+2). Against it: a different doer (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t5/) ### Test 6 · ★ · right ✓ {#t6} What carries carbon dioxide from your toes back to your lungs? - **1.** The air in the windpipe — no support - **2.** The food in the gut — no support - **3.** The blood in the veins — **← Mova's choice** · **✓ the right answer** · score 9 - **4.** The nerves in the leg — no support **Why:** It took the question to ask who or what does it. It chose option 3 with score 9, the only option with support. Its support: lesson 32, line 5: «So blood is like a delivery service: it picks up oxygen in the lungs and food from the gut, drops them off at every cell, and carries the waste away.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same doer «blood» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t6/) ### Test 7 · ★ · wrong ✗ {#t7} Which pair is right? - **1.** Arteries go to the heart, veins go from the heart — **← Mova's choice** · no support - **2.** Arteries go from the heart, veins go to the heart — **✓ the right answer** · no support - **3.** Both only go to the lungs — no support - **4.** Both only go to the heart — no support **Why:** Nothing it remembers matched the question, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t7/) ### Test 8 · ★ · right ✓ {#t8} Why is the heart called a pump? - **1.** It pumps thoughts up into the brain — no support - **2.** It squeezes to push blood along — **← Mova's choice** · **✓ the right answer** · score 5 - **3.** It sucks air down into the lungs each time — score 4 - **4.** It pushes food down to the stomach — no support **Why:** It took the question to ask why something happens (its cause). It chose option 2 with score 5, against 4 for the next best. Its support: lesson 32, line 3: «The heart is a muscle about the size of your fist. It squeezes about 70 to 100 times a minute and pumps blood through tubes called blood vessels to every part…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «heart» (+3); the same action «squeeze» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t8/) ### Test 9 · ★ · right ✓ {#t9} A cut finger gets infected and white blood cells gather there. Why? - **1.** They digest the dirt for food — score 5 - **2.** They make the finger grow back faster — score 3 - **3.** They fight the germs that got in — **← Mova's choice** · **✓ the right answer** · score 7 - **4.** They carry oxygen to the nail — score 7 **Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 32, line 16: «Red blood cells carry oxygen; white blood cells fight germs.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «white blood cells» (+3); the same action «fight» (+2); the same thing acted on «germs» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t9/) ### Test 10 · ★ · right ✓ {#t10} why's my heart going mad after running?? - **1.** The heart gets scared when you run — no support - **2.** Running shakes the heart loose — no support - **3.** The heart is trying to cool down the legs — no support - **4.** Working muscles need more oxygen, so the heart pumps blood faster — **← Mova's choice** · **✓ the right answer** · score 12 **Why:** It took the question to ask why something happens (its cause). It chose option 4 with score 12, the only option with support. Its support: lesson 32, line 15: «When you run, your working muscles need more oxygen, so your heart beats faster and you breathe faster.», reached through the cause of the sentence the question matched. What matched: the same thing acted on «more oxygen» (+5); the same doer «working muscles» (+4); the same action «need» (+3). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t10/) ### Test 11 · ★ · right ✓ {#t11} press my wrist n feel a thump, what is that even - **1.** The pulse, the heartbeat felt in an artery near the skin — **← Mova's choice** · **✓ the right answer** · no support - **2.** The bone in the wrist clicking — no support - **3.** A nerve in the wrist sending a quick message down to the hand — no support - **4.** Air moving through a tube in the wrist — no support **Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t11/) ### Test 12 · ★ · right ✓ {#t12} Mia says we breathe in oxygen and breathe out oxygen too, just used. right? - **1.** No, we breathe out carbon dioxide, a waste gas from our cells — **← Mova's choice** · **✓ the right answer** · score 6 - **2.** Yes, the same oxygen goes in and out — no support - **3.** No, we breathe out only nitrogen — no support - **4.** Yes, used oxygen turns into steam — no support **Why:** It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 32, line 9: «We breathe out carbon dioxide, a waste gas made by our cells.», reached through the remembered sentence the question matched. What matched: the same action «breathe out» (+4); the same thing acted on «carbon dioxide» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t12/) ### Test 13 · ★ · wrong ✗ {#t13} a video said veins carry blood away from the heart. that right? - **1.** Yes, veins carry blood away and arteries bring it back — score 6 - **2.** Yes, veins and arteries both carry it away — **← Mova's choice** · score 10 - **3.** No, veins carry only air around the body — no support - **4.** No, veins bring blood back; arteries carry it away — **✓ the right answer** · score 10 **Why:** It took the question to ask which statement is true. It chose option 2 with score 10, tied with another option at 10 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 32, line 4: «Arteries carry blood away from the heart, veins bring it back, and tiny capillaries join them inside every part of the body.», reached through the remembered sentence the question matched. What matched: the same action «carry away» (+4); the same doer «arteries» (+2); the same thing acted on «blood» (+2); the same property (+2). The right option, 4, scored 10. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/t13/) ### Exam question 1 · formal language · wrong ✗ {#e1} Identify the organ in which oxygen passes from the air into the blood. - **1.** The stomach — **← Mova's choice** · no support - **2.** The lungs — **✓ the right answer** · no support - **3.** The heart — no support - **4.** The liver — no support **Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/e1/) ### Exam question 2 · formal language · wrong ✗ {#e2} Which of the following statements most accurately characterises the arteries? - **1.** They convey blood back to the heart from the body — **← Mova's choice** · score 7 - **2.** They convey air down the windpipe to the lungs — no support - **3.** They convey blood away from the heart — **✓ the right answer** · score 7 - **4.** They convey food from the mouth to the stomach — no support **Why:** It took the question to ask who or what does it. It chose option 1 with score 7, tied with another option at 7 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 32, line 11: «Arteries carry blood away from the heart and veins carry blood back to it.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «blood» (+3); it fills the role the question asks for (+3); the same doer «arteries» (+2); the same place «heart» (+2). Against it: a different action (counts against) (-3). The right option, 3, scored 7. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/e2/) ### Exam question 3 · formal language · right ✓ {#e3} Identify the function of the red blood cells. - **1.** The conveyance of oxygen — **← Mova's choice** · **✓ the right answer** · no support - **2.** The transmission of nerve signals — no support - **3.** The combating of germs — no support - **4.** The digestion of food — no support **Why:** Nothing it remembers matched the question, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/e3/) ### Exam question 4 · formal language · wrong ✗ {#e4} Identify the muscle beneath the lungs that assists inhalation. - **1.** The calf muscle — **← Mova's choice** · no support - **2.** The diaphragm — **✓ the right answer** · no support - **3.** The biceps — no support - **4.** The heart — no support **Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/world/32-heart-blood-breathing/e4/) - ← previous: [31. The skeleton and muscles](https://md.mova.elamur.ai/free/en/school-run/world/31-skeleton-and-muscles/) - next →: [33. Digestion: from mouth to intestines](https://md.mova.elamur.ai/free/en/school-run/world/33-digestion/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/school-run/world/)