| A | B |
|---|
| to bend elbow, biceps | contract |
| to straighten elbow, triceps | contract |
| to straighten elbow, biceps | relax |
| to bend elbow, triceps | relax |
| muscles that cause joints to bend | flexors |
| muscles that cause joints to straighten | extensors |
| backbone, enclose spinal cord | vertebral column |
| 33 bones that the vertebral column | vertebrae |
| lower back of the vetebral column | lumbar |
| supports the head on the vertebral column | cervical |
| region on the vertebral column which is fused | thoracic |
| chemically brakes down food into smaller molecules that are absorbed in the blood and carried to cells throughout the body | digestive system |
| Five Functions of the Skeletal System | support, protect organs, produces red and white blood cells in bone marrow, stores calcium and phosphorus, attachment from muscles |
| Digestive system begins at the | mouth |
| Digestive System ends at the | anus |
| gland in mouth which secretes saliva | Salivary Gland |
| Saliva has this enzyme | Amylase |
| Begins chemical digestion of carbohydrates into glucose | Amylase |
| mechanically break down food into smaller molecules | tteth |
| throat; where food goes through | pharynx |
| voice box | larynx |
| flap that closes off the voice box to prevent food from entering the windpipe | epiglottis |
| windpipe | trachea |
| from the traches, the food then enters a muscular tube which leads food into the stomache | esophagus |
| valve which allows food into the stomache | esophageal sphincter valve |
| below diaphragm | stomache |
| contain acids and enzymes | gastric juices |
