Moving and Growing.

1. Moving and Growing.

2. Human Endoskeleton. You cannot survive without bones. A baby child has about 300 bones in its body . Bones help you move around. When a baby child grows it has about 206 bones as an adult has.

3. Endoskeletons and Exoskeletons. • You have a skeleton inside of your body (endoskeleton) made up of bones. • Animals can have internal or external skeletons. • An endoskeleton is on the inside of the body. • An exoskeleton is on the outside of the body

4. Skeleton Animal. A skeleton animal

5. More facts on the exoskeleton. An exoskeleton is on the outside of the body. Animals such as insects and spiders have external skeletons. The external skeleton of an insect is made of a substance called the chitin.(Tough material found in insect skeletons)

6. Muscles. • Did you know you have more than 600 muscles in your body? They do everything from pumping blood throughout your body to helping you lift your heavy backpack. You control some of your muscles, while others — like your heart — do their jobs without you thinking about them at all. You have three different types of muscles in your body: smooth muscle, cardiac muscle, and skeletal muscle. Muscles are all made of the same material, a type of elastic tissue (sort of like the material in a rubber band). Thousands, or even tens of thousands, of small fibre's make up each muscle Smooth muscles are usually in sheets, or layers, with one layer of muscle behind the other.

7. Joints. • Joints are the places in your body where bones meet. You have big joints - like the ones in your hips, shoulders, and legs; and itty, bitty ones - like the ones in your hands and feet Tendons are made of elastic tissue and also play a key role in the functioning of joints. Joints are the place where two bones meet or connect. A coating of another fibrous tissue called cartilage covers the bone surface and keeps the bones from rubbing directly against each other. Some joints move and some don't. Joints in the skull don't move. Synovial joints are movable joints. They make up most of the joints in the body and are located mostly in the limbs.

8. Ball and socket. • Both the shoulder and hip, in addition to having a ball and socket joint, are known as synovial joints. Ball and socket joints, such as hip and shoulder joints, are the most mobile type of joint. They allow you to move your arms and legs in many different directions.

9. Vertebrates • Vertebrates are animals that have a backbone or spinal column, also called vertebrae. These animals include fish, birds, mammals, amphibians, and reptiles There are currently around 65,000 known species of vertebrate animals. This sounds like a lot, but vertebrates are only around 3% of all the animals on Earth. Most of the animal species are invertebrates.

10. Invertebrates • Of the million or more animal species in the world, more than 98% are invertebrates. Invertebrates don't have an internal skeleton made of bone

11. A few facts….. Invertebrates Animals without a Backbone Vertebrates Animals with a Backbone Humans have a backbone which is part of their skeleton. A skeleton gives the body support and shape.