1 00:00:00,000 --> 00:00:06,720 Bones and muscles Every week, you will be notified by a new 2 00:00:06,720 --> 00:00:07,720 video. 3 00:00:07,720 --> 00:00:13,240 So, don't forget to subscribe, and click the notification bell. 4 00:00:13,240 --> 00:00:19,480 Bones Our body is made up of bones and muscles. 5 00:00:19,480 --> 00:00:23,720 Bones are hard, while the muscles are soft. 6 00:00:23,720 --> 00:00:28,200 We have 206 bones in our body. 7 00:00:28,200 --> 00:00:34,600 All the bones, in the human body together, are called the skeletal system. 8 00:00:34,600 --> 00:00:36,880 Bones give, shape to our body. 9 00:00:36,880 --> 00:00:40,800 Otherwise, we will look like a jelly. 10 00:00:40,800 --> 00:00:47,400 Bones give, support to our body, and makes us to stand straight. 11 00:00:47,400 --> 00:00:50,200 Bones protect our body organs. 12 00:00:50,200 --> 00:00:55,320 Example, skull protects our brain. 13 00:00:55,320 --> 00:00:59,720 Helps protect our heart, and lungs. 14 00:00:59,720 --> 00:01:05,560 Bones together with the muscles, helps our body, to move around. 15 00:01:05,560 --> 00:01:07,440 Bones are hard outside. 16 00:01:07,440 --> 00:01:15,440 At the center of bones, there is a softer substance, called bone marrow. 17 00:01:15,440 --> 00:01:19,400 Joint is a place, where two bones meet. 18 00:01:19,400 --> 00:01:24,640 For example, our knees, and elbows are joints. 19 00:01:24,640 --> 00:01:28,760 Joints have a smooth, durable material, called cartilage. 20 00:01:28,760 --> 00:01:35,360 Cartilage, together with synovial fluid, allows bones to rub against each other, smoothly, 21 00:01:35,360 --> 00:01:38,000 and not wear out. 22 00:01:38,000 --> 00:01:45,520 If we don't have joints, we will not be able to bend our legs, hand, and bend our backbone. 23 00:01:45,520 --> 00:01:48,680 Is bone, a living thing? 24 00:01:48,680 --> 00:01:52,360 Bones in our body, are living thing. 25 00:01:52,360 --> 00:01:58,920 They are made of living cells, which help them, to grow, and to repair themselves. 26 00:01:58,920 --> 00:02:03,960 When a bone breaks, it can grow back together, in some days. 27 00:02:03,960 --> 00:02:06,240 Muscles 28 00:02:06,240 --> 00:02:09,960 Muscles are attached to the bones. 29 00:02:09,960 --> 00:02:13,240 Muscles pull the bones, to make them move. 30 00:02:13,240 --> 00:02:20,600 So, our bones, and muscles work together, to make our body to move. 31 00:02:20,600 --> 00:02:24,360 Bones, connect muscles to bones. 32 00:02:24,360 --> 00:02:32,000 Our bones, and muscles help us to walk, run, play, and do various activities. 33 00:02:32,000 --> 00:02:38,560 There are about 640 muscles, in our body. 34 00:02:38,560 --> 00:02:43,600 Muscles are divided into voluntary, and involuntary muscles. 35 00:02:43,600 --> 00:02:49,140 Voluntary muscles are muscles, which are under our conscious control. 36 00:02:49,140 --> 00:02:52,600 Voluntary muscles are attached to the skeleton. 37 00:02:52,600 --> 00:03:00,280 They help us to move our legs, arms, and other part of our body, with our control. 38 00:03:00,280 --> 00:03:05,900 Involuntary muscles are muscles, that are not under our conscious control. 39 00:03:05,900 --> 00:03:11,780 Involuntary muscles are found in our stomach, intestine, heart and so on. 40 00:03:11,780 --> 00:03:15,080 These muscles work without our control. 41 00:03:15,080 --> 00:03:20,760 To have a healthy bones, and muscles, we should exercise every day. 42 00:03:20,760 --> 00:03:27,200 Cycling, swimming, running, playing outdoor are some of the good exercise. 43 00:03:27,200 --> 00:03:30,160 We should get enough sleep every night. 44 00:03:30,160 --> 00:03:37,160 Eat food rich in calcium, and protein, like milk, dal, egg, and meat, to build a strong 45 00:03:37,160 --> 00:03:40,560 bones, and muscles. 46 00:03:40,560 --> 00:03:47,200 Posture is the position, in which we hold our body, while sitting, standing, or walking. 47 00:03:47,200 --> 00:03:49,920 Good posture keeps us fit. 48 00:03:49,920 --> 00:03:52,960 Bad posture can hurt our body. 49 00:03:52,960 --> 00:03:55,520 Always keep a straight posture. 50 00:03:55,520 --> 00:03:58,880 Do not slouch. 51 00:03:58,880 --> 00:03:59,600 Thinking Time 52 00:04:40,560 --> 00:05:02,560 Thank you for watching this video. 53 00:05:02,560 --> 00:05:06,320 Every week, you will be notified by a new video. 54 00:05:06,320 --> 00:05:10,880 So, don't forget to subscribe, and click the notification bell.