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Anatomical Terms - Axial Skeleton
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50
Anatomy
11th Grade
10/25/2010

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Term
Frontal Bone
Definition
The part of the skull that protects the front of the brain.
Term
Coronal Suture
Definition
Divides the Frontal and Parietal bones.
Term
Parietal Bone
Definition
Protects the mid-level of the brain.
Term
Temporal Bone
Definition
On the sides of the head; covers the lower sides of the head.
Term
Lambdoid Suture
Definition
Divides the Parietal and Occipital bones.
Term
Occipital Bone
Definition
Covers the lower, back portion of the head.
Term
Mandible
Definition
Jaw
Term
Maxilla
Definition
The area of the skull on the front of head; touches teeth, surrounds the nasal area.
Term
Zygomatic Bone
Definition
Bone that covers the cheek area.
Term
Nasal Bone
Definition
Covers the bridge of the nose.
Term
Lacrimal Bone
Definition
Covers the tear ducts.
Term
Ethmoid Bone
Definition
Bone located just on the inside portion of the eye.
Term
Sphenoid Bone
Definition
Bone that covers the ear.
Term
Vomer Bone
Definition
Located on the lower, under portion of the nose.
Term
Inferior Nasal Concla
Definition
On the inside of the nose.
Term
Foramen Magnum
Definition
A hole in the head.
Term
Proximal Epiphysis
Definition
The top of the bone.
Term
Diaphysis
Definition
The center of the bone.
Term
Spongy Bone
Definition
Bone with a "squishy" structure.
Term
Compact Bone
Definition
Smaller, stronger bone.
Term
Articular Cartilage
Definition
Protects the proximal epiphysis.
Term
Ephiphyseal Line
Definition
The area where bone grows.
Term
Periosteum
Definition
The outside part of the bone.
Term
Endosteum
Definition
The inside part of the bone.
Term
Medullary Cavity
Definition
The part of the bone (middle) that holds the bone marrow.
Term
Yellow Bone Marrow
Definition
Bone marrow found in adults.
Term
Red Bone Marrow
Definition
Bone marrow found in children.
Term
Nutrient Arteries
Definition
Blood centers that provide blood through the bone.
Term
Sharpey's Fibers
Definition
Attach the periosteum to the center of the bone.
Term
Blood Vessel
Definition
A large transporter of blood and nutrients.
Term
Central Canal
Definition
The main open area of the bone where the main blood vessel runs through.
Term
Perforating Canal
Definition
A smaller area of the bone where blood runs through.
Term
Lamellae
Definition
Concentric circles around the blood vessel.
Term
Osteon
Definition
Multiple bone cells; the big circle.
Term
Osteocyte
Definition
A central cell of the bone.
Term
Canaliculus
Definition
Really tiny canals that nerves run through.
Term
Matrix
Definition
The general central bone area.
Term
Atlas
Definition
The top vertebra of the spine.
Term
Axis
Definition
The second vertebra of the spine.
Term
Cervical Curvature
Definition
Vertebrae 1-7.
Term
Thoracic Curvature
Definition
Vertebrae 8-19.
Term
Lumbar Curvature
Definition
Vertebrae 20-24.
Term
Sacrum
Definition
The top of the tailbone.
Term
Coccyx
Definition
The bottom of the tailbone.
Term
True Ribs
Definition
Ribs that directly attach to the sternum.
Term
False Ribs
Definition
Ribs that don't directly attach to the sternum.
Term
Costal Cartilage
Definition
The connecting section of the ribs.
Term
Mambrium
Definition
The top of the sternum.
Term
Body
Definition
The middle of the sternum.
Term
Xiphoid Process
Definition
The bottom of the sternum.
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