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Chapter 8: Online NCERT Summary Class - VI (Science) for UPSC CSE
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This lesson deals with the concepts which are entirely relating to the Body Movements, which is chapter 8 of Class 6 Science NCERT. As the lesson begins he explains Joints, Ball, and socket joint, Pivotal Joint, Hinge joint, and Fixed joint. Then he describes comprehensively about the framework of bones in our body. Also, some fascinating and useful facts about Earthworm, Snail, Cockroaches, Birds, Fishes and Snakes are highlighted.

Roman Saini is teaching live on Unacademy Plus

Roman Saini
Part of a great founding team at Unacademy with Gaurav, Hemesh. Movies, Guitar, Books, Teaching.

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sir bhut badiya .. lekin sir thoda awaz mein josh laaiye
Vijendra Singh
10 months ago
thanks... sure
Sir aapne konse coaching centre se coaching li hai? Suggest other coaching centres in Delhi for IAS plzzz
sir I have personally read class vi book. there is nothing given like that which are teaching.
great point by point presentation.. iv referd d's topic bth here n youtube and i realise the way of presentation d's same topics in youtube is very more catchy and interesting with the inclusions of hand written imp. 'terms'(words) and diagrams in detail....request u to kindly apply the same here..Very valuable indeed ..thank you,sirji.
I want to do Economics honour form sri ram college of commerce and also want to take public administration in sobordinate it,s helpful for me to clear UPSC
  1. Lorem Ipsum Dolor Class 6 Science NCERT Part 3 : Chapter 8 Body Movements Presented by Dr. Roman Saini


  2. About me MBBS, AIIMS 706-1334 EST Cleared CSE-2013 Loves playing Guitar, Movie Buff * Course Fee : Contribute Follow me on Unacademy https://unacademy.in/user/RomanSaini


  3. Be brilliant with the basics, rest all will follow.


  4. Kevwords and summary


  5. Ch 8: Body movements Run, fly, jump, creep, crawl, slither, swim, walk Joints: Articulation between bones, cartilage, tendons etc. Movement (except at skull, sacral, sternal, and pelvic bones) and stability Ball and socket joint- cavity (hollow space) + head/ball of a bone, huge range, shoulder and hip joint Pivotal joint- Neck (median atlanto-axial joint), Radio ulnar joints (both), IV only rotation allowed Hingejoint movement only on one axis-wrist and knee joint Fixed ioint. Cant move, skull joints, upper jaw with skull


  6. s Ch 8: Body movements Skeleton-framework of bones in our body, gives us shape, X-Ray. Rib cage: Sternum (chest bone) + Vertebral column are connected thorough 24 (12*2) ribs, 7 (tr through coastal cartilages to 7th rib 2 (floating ribs, hanging ribs) - called thorax, thoracic cavity ue ribs, attach directly to sternum)+ 3 (false ribs, attach shoulder bones, pelvic * are not as hard as the bones and which can be bent. These are called cartilage.


  7. Ch 8: Body movements : Bones 206 bones 126 : Appendicular = 30*4 limbs-120, 2 clavicles, 2 scapulas, 2 Pelvic bones, 120 + 6 = 126 80 : Axial = Skull (29-22 Cranium + 6 ears + 1 hyoid), Vertebral column (7 C, 12 T, 5 L, 1 S, 1 C = 26), 24 Ribs + 1 Sternum. 29 Skull + 26 Vertebral Column + 24 Ribs + 1 Sternum = 80


  8. 206 bones 126: Appendicular 30 4 limbs 120, 2 clavicles, 2 scapulas, 2 Pelvic bones 80 : Axial-Skull (29-22 Cranium + 6 ears + 1 hyoid), Vertebral column (7 C, 12 T, 5 L, 5 S, 1 C = 32), 24 Ribs 1 Sternum


  9. Ch 8:Body movements Muscles, contraction to bulging (Shorter, stiffer and thicker), works in pars (contraction + relaxation), only pull, at least 2 muscles are required to work for movement on a joint. Earthworm has muscles, no bones, tiny bristle hairs, eats soils and move forward and excrete, very helpful for farming * Snail have one shell, which is dragged by strong foot muscles Cockroaches have 3 pair of legs, can walk, climb and fly, thick exoskeleton with joints


  10. Ch 8: Body movements Birds have pneumatic and hollow bones with strong muscles Fishes have small head and tail, with streamlined body, series of jerks in strong muscles, with tail assisting in the direction, fins help in the balance Snakes slithers, forming loops (give forward push by pressing against the ground, sideways and not in a straight-line), long backbone, small muscles, interconnecting backbone, ribs and skin