Chapter 7 Flashcards
Axial Skeleton
80 bones forming the body’s longitudinal axis.
Appendicular Skeleton
Bones supporting the limbs of the body.
Cranium
8 cranial bones enclosing the brain.
Facial Bones
14 bones supporting the face’s structure.
Auditory Ossicles
6 small bones in the middle ear.
Hyoid Bone
Supports the tongue; not attached to other bones.
Thoracic Cage
Consists of sternum and 24 ribs.
Vertebral Column
Composed of 24 vertebrae, sacrum, coccyx.
Functions of Axial Skeleton
Supports/protects organs; muscle attachment points.
Cranial Cavity
Space enclosed by cranial bones; contains brain.
Sutures
Immovable joints connecting skull bones.
Lambdoid Suture
Joins occipital and parietal bones.
Coronal Suture
Attaches frontal to parietal bones.
Sagittal Suture
Between the two parietal bones.
Squamous Suture
Connects temporal bones with parietal bones.
Cervical Vertebrae
7 vertebrae supporting the neck.
Thoracic Vertebrae
12 vertebrae connecting to ribs.
Lumbar Vertebrae
5 vertebrae supporting lower back.
Sacrum
1 bone formed by fused vertebrae.
Coccyx
1 bone, the tailbone, at spine’s end.
Maxillae
2 bones forming the upper jaw.
Mandible
1 bone forming the lower jaw.
Nasal Bones
2 bones forming the bridge of the nose.
Zygomatic Bones
2 bones forming the cheekbones.