The brain, nerves and the five senses

Tests: 3 of 13 right · Exam: 2 of 4 right · Kind: ★ · Understood: 8 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 34 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.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★ · wrong ✗

A friend says "bitter is tasted only at the back of the tongue". What is right?

1. Bitter is tasted only by the nose — ← Mova's choice · no support
2. Yes, the back is the only place for bitter — no support
3. Bitter is tasted only on the tip — no support
4. Bitter, like every taste, can be sensed all over the tongue — ✓ the right answer · 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

Test 2 · ★ · wrong ✗

You hold your nose and eat a slice of apple and a slice of raw potato. Why is it hard to tell them apart?

1. The tongue cannot sense anything when the nose is closed — ← Mova's choice · no support
2. Apple and potato are made of the same thing — no support
3. Holding the nose stops the teeth chewing — no support
4. Without smell, much of their flavour is lost — ✓ the right answer · 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

Test 3 · ★ · wrong ✗

If the nerve from an eye to the brain were cut, what would happen?

1. Nothing at all, because eyes can see without the brain — ← Mova's choice · no support
2. That eye could not send pictures to the brain — ✓ the right answer · no support
3. The eye would see better — no support
4. The eye would start to hear — 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

Test 4 · ★ · wrong ✗

Which is true about nerves?

1. They are hollow tubes full of air, like straws — no support
2. They only carry messages from the brain to the body — ← Mova's choice · score 8
3. They carry messages to and from the brain — ✓ the right answer · score 8
4. They carry blood up to the brain and back again — score 2

Why: It took the question to ask which statement is true. It chose option 2 with score 8, tied with another option at 8 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 34, line 2: «Nerves are like wires that carry tiny electrical messages: sense nerves bring news from the body to the brain, and other nerves carry orders from the brain to…», reached through the remembered sentence the question matched. What matched: the same action «carry» (+4); the same place «brain» (+4); the same doer «other nerves» (+2). Against it: a different thing acted on (counts against) (-2). The right option, 3, scored 8. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · right ✓

A doctor taps just below your knee and your leg kicks up by itself. What is this?

1. A reflex — ← Mova's choice · ✓ the right answer · no support
2. A habit learned at school — no support
3. A dream — no support
4. A thought — 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

Test 6 · ★ · wrong ✗

Which sense tells you that the bath water is too hot?

1. Smell, through the nose — no support
2. Sight, through the eyes — no support
3. Hearing, through the ears — ← Mova's choice · score 8
4. Touch, through the skin — ✓ the right answer · no support

Why: It took the question to ask who or what does it. It chose option 3 with score 8, the only option with support. Its support: lesson 27, line 4: «A polar bear has thick fat, dense fur and black skin under its pale fur; it has small ears and wide feet for walking on snow. A fish has gills, fins and a smoo…», 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 «small ears» (+4). Against it: a different action (counts against) (-1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Why do bicycle helmets matter so much?

1. They keep the ears and the hair warm in the wind on cold winter rides — ← Mova's choice · no support
2. They help protect the brain, which controls the whole body — ✓ the right answer · no support
3. They improve your sense of smell — no support
4. They make you ride faster — 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

Test 8 · ★ · right ✓

A blindfolded girl knows her mum is baking a cake. Which sense tells her?

1. Smell — ← Mova's choice · ✓ the right answer · no support
2. Touch — no support
3. Taste only — no support
4. Sight — 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

Test 9 · ★ · wrong ✗

How does the brain learn that a mosquito bit your toe?

1. The blood carries the pain to the brain — ← Mova's choice · score 2
2. The skin shouts to the ears — no support
3. The bone of the toe tells the skull — no support
4. A nerve sends a signal up the spinal cord to the brain — ✓ the right answer · score 2

Why: It took the question to ask what something is like. It chose option 1 with score 2, tied with another option at 2 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 34, line 2: «Nerves are like wires that carry tiny electrical messages: sense nerves bring news from the body to the brain, and other nerves carry orders from the brain to…», reached through the option's own match among the sentences about the question's things. What matched: the same action «carry» (+2); the same place «brain» (+2). Against it: a different doer (counts against) (-1); a different thing acted on (counts against) (-1). The right option, 4, scored 2. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · wrong ✗

why'd my hand jump off the hot pan before i even thought

1. The hand muscles think for themselves — no support
2. The pan pushed the hand away — ← Mova's choice · score 0
3. It was a reflex, a quick automatic action — ✓ the right answer · no support
4. The skin melted for a moment — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 0, the only option with support. Its support: lesson 34, line 6: «Some quick actions skip the thinking part of the brain: if you touch a hot pan, the spinal cord pulls your hand away before you even feel the pain. This is a r…», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «hand» (+1); the same property (+1). Against it: a different action (counts against) (-1); a different doer (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · right ✓

got a cold n food tastes of nothing, how come

1. The cold kills the taste buds for good — no support
2. Most flavour comes from smell, and a blocked nose cannot smell — ← Mova's choice · ✓ the right answer · score 6
3. The tongue stops working for the whole cold every time you sneeze — no support
4. Germs eat the taste of the food — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 6, the only option with support. Its support: lesson 34, line 5: «Much of what we call flavour really comes from smell, which is why food seems tasteless when your nose is blocked by a cold.», reached through the remembered sentence the question matched. What matched: the same action «come» (+4); the same place «smell» (+4). Against it: a different doer (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Test 12 · ★ · wrong ✗

teacher said sweet is only tasted at the tip of the tongue. true?

1. Yes, the rest of the tongue tastes nothing — ← Mova's choice · no support
2. No, taste buds all over the tongue sense every taste — ✓ the right answer · no support
3. Yes, the tip is for sweet and the back for bitter — no support
4. No, sweet is tasted only at the back — 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

Test 13 · ★ · wrong ✗

Jack says nerves carry messages like little tubes of water. right?

1. Yes, nerves are little tubes full of water — no support
2. No, nerves carry messages as tiny sounds — ← Mova's choice · score 8
3. No, they carry tiny electrical signals — ✓ the right answer · score 4
4. Yes, the water pushes the message along inside — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 8, against 4 for the next best. Its support: lesson 34, line 9: «Nerves carry messages as tiny electrical signals.», reached through the remembered sentence the question matched. What matched: the same action «carry» (+4); the same doer «nerves» (+2); the same thing acted on «messages» (+2). The right option, 3, scored 4. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the transmission of messages along the nerves?

1. They are conveyed as sound — ← Mova's choice · no support
2. They are conveyed by the movement of air — no support
3. They are conveyed as minute electrical signals — ✓ the right answer · no support
4. They are conveyed by the flow of blood — 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

Exam question 2 · formal language · right ✓

Select the response that is consistent with the established facts concerning the sense of taste.

1. Each taste is detected solely in its own region of the tongue — no support
2. Sweetness is detected solely at the tip of the tongue — no support
3. Bitterness is detected solely at the back and the sides of the tongue — no support
4. Every taste may be detected by taste buds across the whole tongue — ← Mova's choice · ✓ the right answer · score 2

Why: It took the question to ask which statement is true. It chose option 4 with score 2, the only option with support. Its support: lesson 34, line 12: «Every taste can be sensed by taste buds all over the tongue; the tongue map is a myth.», reached through the remembered sentence the question matched. What matched: the same doer «taste buds» (+2); the same thing acted on «taste» (+2). Against it: a different action (counts against) (-2). · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Identify the sense from which the greater part of the flavour of food derives.

1. Sight — ← Mova's choice · no support
2. Touch — no support
3. Taste — no support
4. Smell — ✓ the right answer · 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

Exam question 4 · formal language · right ✓

Which of the following is designated by the term reflex?

1. A deliberate decision made after reflection — no support
2. A memory of a past event — no support
3. A dream occurring during sleep — no support
4. A rapid, automatic action such as withdrawing the hand from heat — ← Mova's choice · ✓ the right answer · score 10

Why: It took the question to ask who or what does it. It chose option 4 with score 10, the only option with support. Its support: lesson 34, line 17: «A reflex is a quick, automatic action, such as pulling your hand off something hot.», 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 «quick automatic action» (+4); the same thing acted on «hand» (+2). Against it: a different action (counts against) (-1). · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/world/34-brain-nerves-senses/