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Stack #54427 Bones
Bones and Muscles 7th Grade
| Question | Answer |
|---|---|
| About how many bones are in an adult body? | 206 |
| Bones are held together by | ligaments |
| A flexible connective tissue | cartilage |
| Where bones meet | joint |
| Where red blood cells are made | marrow |
| Minerals stored by bone | calcium and phosphorus |
| Longest bone in the body | femur |
| The shoulder and hip have what kind of joint? | ball-and-socket joint |
| The elbow and knee have what kind of joint? | hinge joint |
| Muscles you control | voluntary |
| Muscles you don't control | involuntary |
| Join muscle to bone | tendon |
| Three main jobs of the skeletal system | shape and support, movement, protect organs |
| Fingers and Toes | phalanges |
| Skull | Cranium |
| Breast bone | sternum |
| Shin bone | tibia |
| Joint in the skull | fixed |
| Joint in the back | gliding |
| Joint in the neck | pivot |
| Chest muscles | pectoralis major |
| Shoulder muscles | deltoids |
| Upper arm muscle | biceps |
| Heart muscle | cardiac |
| Muscles work in | pairs |
| What makes muscles work | energy |
| When one muscle contracts the other | relaxes |
| Involuntary muscles are | smooth |
| Skeletal muscles are | striaded |
| Involuntary muscles work with what nervous system | autonomous |
| Two protein filaments in muscle | actin and myosin |
| Your intestines are | smooth muscle |
| Babies have more or fewer bones than adults | more |