The Skeletal System Class #1

Functions of the Skeletal System Squeeze your hands and arms. The hard parts you feel are parts of your Skeleton. When you think of your skeleton, you might think of bones.

Functions of the Skeletal System Bones support your body and help you move.

Functions of the Skeletal System Your skeleton is part of your skeletal system and contains more than 200 bones.

Functions of the Skeletal System The skeletal system contains bones as well as other structures that connect and protect the bones and that support other functions in the body. In this lesson, you will learn how all parts of the skeletal system work together.

Support Can you imagine trying to stack jiggling blocks of gelatin 1 m high? You would probably have a hard time because gelatin does not have any support structures inside it.

Support Without bones, your body would be similar to gelatin. Bones provide support.

Support Bones help you sit up, stand, and raise your arm over your head to ask a question.

Movement The skeletal system enables different parts of the body to move in different ways, like when a person kicks a soccer ball, as shown in the beginning of this chapter

Movement Bones can move because they are attached to muscles.

Movement The skeletal system and the muscular system work together and move your body.

Protection Feel your head and then feel your stomach. Your stomach is softer than your head.

Protection The hard, rigid structure you feel in your head is your skull. It protects the soft, fragile tissue of your brain from damage.

Protection Other bones protect the spinal cord, heart, lungs, and other internal organs.

Production and Storage Another function of bones is to produce and store materials needed by your body.

Production and Storage Red blood cells are produced inside your bones. Bones store fat and calcium.

Production and Storage Calcium is needed for strong bones and for many cellular processes. When the body needs calcium, it is released from bones into the blood.

Structure of Bones A bone is an organ composed of living tissue.

Structure of Bones There are two main types of bone tissue: compact and spongy.

Structure of Bones A bone also contains other types of tissue, as you can see in the arm bone shown in Figure 3.

Fill in the blanks with the correct response. Name: ____________ Skull Gelatin Move Spongy Bone Calcium Fill in the blanks with the correct response. Structures Compact Skeletal System 1. Bone support the body and help you ______. 2. The Skeletal system contains bones as well as other ______ that connect and protect the bones… 3. Can you imagine jiggling blocks of __________? 4. The ______ enables different parts of the body to move in different ways. 5. The hard, rigid structure in your head is your _______. 6. __________ is needed for strong bones. 7. A bone is an ________ composed of living tissue. 8. There are two main types of bone tissue _____________ and ____________.

Homework Name:____________ Translate the words into Chinese and then send me a WeChat message saying the words in English Organ:___________________ Lungs:______________ Spinal Cord:_________________ Heart:_________________ Internal Organs:______________ Another function of bones is to produce and store materials needed by your body. ______________________________________________________ Calcium:____________________ A bone is an organ composed of living tissue:_________________ Tissue:____________________ Skeleton:_________________ Skeletal System:____________ Bones:___________________ Function:_________________ Support:__________________ Support Structure:__________ Movement :_______________ Attached to:_______________ Muscle:___________________ Muscular System:__________ Skull:____________________ Tissue:___________________

With a Partner, try to answer the True or False Questions 1. Bacteria live in almost every habitat on Earth 1. True/ False 2. Bacteria can’t live on dead organisms 2. True/ False 3. Your body contains bacteria cells 3. True/ False 4. Some bacteria have specialized structures 4. True/ False 5. Bacteria obtain food in various ways 5. True/ False 6. No bacteria can make their own food. 6. True/ False 7. A capsule can protect bacteria from drying out. 7. True/ False 8. Bacteria have five basic shapes. 8. True/ False 9. Your body contains more bacterial cells than human cells. 9. True/ False 10. Bacteria can’t live under water. 10. True/ False