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7th Science Part 4
Science Order And Reality-Chapter 3- A Beka Book- Malia Faith Nelson
Question | Answer |
---|---|
Axial skeleton | Includes the 80 bones of the head, spine, and ribs. |
Cranium | Surrounds and protects the brain with eight flat bones that are fused together |
Maxillary bones | Forms the upper jaw bone, connects to every other facial bone except the manible |
Manible | Lower jawbone; this is the only movable bone in the skull |
Sinuses | Hollow spaces that help your voice resonate and lighten your skull |
Vertebral column | Backbone; consist of thirty-three vertebrae. |
Sternum | Breastbone |
Appendicular skeleton | Includes the bones of the appendages and the bones that connect them to the axial skeleton. |
Clabicles | Collarbones |
Scapulas | Shoulder blades |
Pelvis | Hipbones; this is made of several different bones and protects the organs of the urinary and reproductive systems |
Joint | A place where two or more bones meet |
To allow the bones in movable joints to move easily, the ends are covered with a smooth tissue called _________. | Cartilage |
Ligaments | Strong, tough tissues that connect bones to other bones |
What are three types of movable joints? | Hinge, pivot, and ball-and-socket |
Hinge joint | Similar to a hinge on a door; they allow back and forward movement |
Pivot joints | Allow turning movements |
Ball-and-socket joints | Are found in your shoulders and hips, allow you to move your arms and legs in many directions |
Fracture | A break or crack in a bone |
Simple fracture | A crack or break that does no cause the bone to pierce the skin's surface |
Compound fracture | A crack or break in a bone that actually breaks through the skin's surface |