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Skeletal System

Flashcards Vocabulary

Cranium Skull; covers & protects the brain
Mandible Lower jawbone; hinged to help you chew your food
Clavicle Collarbone; connects the sternum to the scapula at your shoulder joint; connects arms to ribs
Scapula Shoulder blade; connects arms to ribs; back of rib cage
Ribs Rib cage; protection for lungs, heart, liver, stomach as well as major blood vessels; attached to the vertebrae in the back & sternum in the front; 12 pair
Sternum Flat bone attaching most of the ribs in the front of the chest; gives solid protection to center of chest & internal organs
Humerus Supports our arms; “funny” bone; gives the ability to pick things up
Radius Lower arm bone attaching the thumb to the humerus bone; swivels over the ulna for arm movement
Ulna Lower arm bone attaching the pinky finger to the humerus bone; swivels with the radius for arm movement
Phalanges (hand bones) gives you the ability to pick up small things; connects to the radius & ulna at wrist joint; very flexible
Vertebrae 33 individual bones connected with ligaments & separated by cartilage disks; provides you the ability to move, bend, stretch, twist; protects the nerves of the spinal cord
Pelvis Holds the femur in the ball & socket joint at hip; supports vertebrae and allows large movements-bending at waist; protects internal organs
Femur This is the largest & strongest bone in your body; connects to pelvis and the patella; supports & holds your body upright
Patella Kneecap; protects the knee joint and connects femur to fibula & tibia
Tibia Shin bone; front, larger lower leg bone; connects at the patella & the phalanges
Fibula Back, smaller lower leg bone; connects at the patella & the phalanges
Phalanges (foot bones) Supports the weight of your body & allows for movement; connects to leg at the ankle joint; very flexible
Joints where bones come together
Tendons attach muscle to bone (Tall Muscular Body)
Ligaments attach bone to bone (Lazy Bone Body)
Ball & Socket Joint allows movement in many directions ~ at shoulders & hips
Hinge Joint allows movement toward & away from another bone/one direction only ~ at knee
Pivot Joint allows rotation ~ at neck
Gliding Joint allows flat bones to glide over one another ~ at wrists & ankles
Saddle Joint Moves back & forth over another ~ at thumb
Created by: TGagne