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Lesson – 11, A Look inside the body, Q1) Fill in the blanks., 1)The internal organs that help to digest, the food are present in the alimentary, canal., 2) We have two lungs., 3) Every throbbing of the heart is called a, heartbeat., 4) We become aware of all our emotions in, the brain., 5) The structure of the human body is very, complex., 6) The cavity of abdomen has two parts,, abdominal cavity and pelvic cavity., 7) We remember information that is, registered in the brain.This remembering, is called memory., 8) The brain is situated in the cranial, cavity., 9) The oesophagus is also called the gullet.
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10) The heart and lungs are safe and secure, in the ribcage., Q2) Write whether the following sentences, are True or False., 1)The oesophagus is in the thoracic cavity., True, 2) The heart is a little bigger than our fist., True, 3) The food in the mouth forms a moist, lump. True, 4) In the brain, we interpret the information, collected by the sensory organs. True, 5) The right lung is slightly bigger than the, left lung. True, 6) The wind pipe divides into two branches,, each is called bronchus. True, 7) The function of heart and stomach depend, upon each other. False, 8) The length of alimentary canal is about 10, metres. False, 9) The relaxation of the heart is called
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heartbeat. False, 10) Injury to the brain does not affect one’s, life. False, Q3) Match the columns:, 1), Column ‘A’, , Answers, , Blood supply, , Heart, , Breathing, Carrying food, to the stomach, Controlling, movments, , Lungs, Alimentary, canal, Brain, , Column ‘B’, , Alimentary, canal, Heart, Brain, Lungs, , 2), Column ‘A’, Cranial cavity, Thoracic cavity, Pelvic cavity, , Answers, , Brain, Heart, Lower side of, abdomen, , Abdominal cavity Stomach, , Column ‘B’, , Stomach, Brain, Heart, Lower side of, abdomen
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3), Column ‘A’, Heart and lungs, Brain, Oesophagus, Wind pipe, , Answers, , Ribcage, Skull, Carrying food, Carrying air, , Column ‘B’, , Skull, Ribcage, Carrying air, Carrying food, , Q4) Answer the following in one word., 1)Which organ stores the eaten food for, sometime?, Ans: Stomach, 2)From where is unwanted faeces thrown, out?, Ans: Anus, 3)What is term for becoming smaller?, Ans: Contraction, 4)Where is pulse felt by the doctor?, Ans: Near the wrist, 5)Which internal organ is present between, the two lungs?, Ans: Heart, 6)What are the branches of wind pipe called?
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Ans: Bronchi, 7)Which internal organs helps up to, understand the information sent by sensory, organs?, Ans: Brain, Q5) Answer the following in one sentences, each:, 1)What are the functions of the teeth and, the tongue?, Ans:The functions of the teeth is to chew, the food.The tongue tells us about the, taste of the food., 2)What is the function of the oesophagus?, Ans:Oesophagus carries food from throat to, stomach., 3) When does our pulse become slower and, when does it become faster?, Ans:When we are sleeping quietly,the pulse, become slower and when we are, running it become faster., 4) What is wind pipe?
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Ans: A pipe like internal organ which carries, the air that we breathe through nose into, lungs is called wind pipe, 5) What happens to the lungs when we, breathe in?, Ans:The lungs expand a little when we, breathe in., Q6) Give reasons:, 1) The structure of the body is such that all, internal organs remain secure in their, places., Ans:1) Internal organs perform important, bodily functions., 2)They should not be damaged due to, our movements., 3)Therefore,there are hollow spaces for, these organs inside the head and, torso., 4) So that our all internal organs remain, secure in their places., 2) Blood must be kept flowing in the blood
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vessels throughout the body., Ans: 1) Blood carries the air to all parts of, the body., 2) It also carries the digested food to, every part of the body., 3) For this purpose blood must be kept, flowing in the blood vessels, throughout the body., 3) The brain has to be kept completely safe., Ans:1) The brain is very important internal, organ., 2) Injury to brain can make one, disabled for life or can cause death., 3) Therefore brain has to be kept, completely safe., Q7) Answer the following questions:, 1) What is meant by ‘ internal organ’?, Ans: The organs present inside the body and, those which cannot be seen from, outside are called internal organ., 2) Name the two cavities in the abdomen.
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Ans: Abdominal cavity and pelvic cavity are, the two cavities in the abdomen., 3) Which important organs are situated in, the ribcage in the thoracic cavity?, Ans: The heart and lungs are situated in the, ribcage in the thoracic cavity., 4) Why does the chest swell when we, breathe in?, Ans: When we breathe in,air enters our body, through nose and the lungs expand a, little.So the chest swells when we, breathe in., 5) Why is the brain situated in the casing of, the skull?, Ans: 1) Brain is very important internal organ., 2) Injury to the brain can make one, disabled for life or can cause death., 3) Hence, it needs to be totally protected., 4) So it is situated in the cavity of the, skull., 6) What important functions does the brain
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perform?, Ans: The important functions of the brain are, 1) It controls all body movements., 2) It makes us aware of emotions., 3) It interprets information sent by, sensory organs., 4) It registers the things learnt by us and, stores them in the form of memory., Q8) Use your brain power!, 1)The organs which help digest our food are, in the abdomen,only the oesophagus is in, thoracic cavity.Why?, Ans:1) We take in food through mouth., 2) Food is chewed,mixed with saliva and, converted into a moist ball in our, mouth., 3) These moist balls need to be carried to, the stomach and other digestive organs, in the abdominal cavity., 4) A tube like part called oesophagus, connects mouth and stomach lies in
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thoracic cavity., 5)This tube like part carries food from, mouth to stomach., 2)How are the flexible walls of the, Oesophagus useful?, Ans:The flexible walls of the oesophagus, makes it possible to carry food from, the throat to the stomach., Q9) Think and tell:, Why do we pant when we have been, running hard for sometime?, Ans: When we run,our body needs more, energy.So our heart works more to, provide more blood to legs and other, parts of our body.In turn, lungs also, pump more air to the body.So we pant, when we run., Q10) Use your brain power!, When the heart contracts,the blood in, the heart is pushed into the blood, vessels. What could be the reason for this?
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Ans: If pressure is applied to a liquid in, closed space,the liquid will gush from, wherever it finds a way out. In the same, way, when the heart contract it puts, pressure on blood inside it.So, the blood, is pushed out of the heart and it goes, into the blood vessels., Q11) Can you tell?, The man is filling the water from the tap, into a drum. The drum is some distance, away from the tap.Still,the water from, the tap is flowing into the drum.Why, is this so?, Ans: Although, the drum is some distance, away from the tap still the water from, the tap is flowing into the drum, because drum and tap are connected, through the pipe.The water is flowing, inside it.
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Open ended questions, 1) What care will you take for the smooth, functioning of all your internal organs?, 2) Looking or smelling some foodstuffs, make you salivate.Name some food, items which make your mouth water., , NEW WORDS, Cranial, Thoracic, Abdominal, Pelvic, Oesophagus, Gullet, Ribcage, Contraction, Skull, Bronchus, Alimentary, Throbbing, Complex, Anus, Relaxation
