| A | B |
|---|
| acetabulum | Rounded depression, or socket, in the pelvic bone where the thigh bone joins with the pelvis |
| acromion | Outward extension of the shoulder bone forming the point of the shoulder |
| articular cartilage | Thin layer of cartilage at the ends of long bones |
| calcium | One of the mineral constituents of bones |
| cancellous bone | Spongy, porous, trabecular bone tissue. |
| cartilage tissue | Flexible, rubbery connective tissue found on joint surfaces and in the embryonic skeleton. |
| compact bone | Hard, dense bone tissue. |
| condyle | Knuckle-like process at the end of a bone near the joint. |
| cranial bones | Ethmoid, frontal, occipital, parietal, sphenoid, and temporal. |
| diaphysis | Shaft, or midportion, of a long bone |
| disk (disc) | Flat, round, plate like structure. An intervertebral disk is a fibrocartilaginous substance between the vertebrae. |
| epiphyseal plate | Cartilaginous area at the ends of long bones where lengthwise growth takes place |
| epiphysis | Each end of a long bone. |
| facial bones | Lacrimal, mandible, maxillae, nasal, vomer, and zygomatic. |
| false ribs | Ribs 8-10 |
| fissure | Narrow,, slit-like opening between bones. |
| floating ribs | Ribs 11 and 12. |
| fontanelle | Soft spot (incomplete bone formation) between the skull bones of an infant. |
| foramen | Opening or passage in bones where blood vessels and nerves enter and leave. The foramen mmagnum is the opening of the occipital bone through which the spinal cord passes. |
| fossa | Shallow cavity in a bone. |
| haversian canals | Minute spaces filled with blood vessels, found in compact bone. |
| malleolus | Round process on both sides of the ankle joint. |
| mastoid process | Round projection on the temporal bone behind the ear. |
| medullary cavity | Central, hollowed-out area in the shaft of a long bone. |
| olecranon | Large process forming the elbow. |
| osseous tissue | Bone tissue |
| ossification | Process of bone formation |
| osteoblast | Bone cell that helps form bone tissue. |
| osteoclast | Bone cell that absorbs and removes unwanted bone tissue. |
| periosteum | Membrane surrounding bones. |
| phosphorus | Mineral substance found in bones in combination with calcium. |
| pubic symphysis | Area of fusion of the two pubic bones. |
| red bone marrow | Found in cancellous bone; site of hemopoiesis. |
| sinus | Cavity within a bone. |
| styloid process | Pole-like process on the temporal bone. |
| sulcus | Groove-like depression. |
| trabeculae | Supporting bundles of bony fibers in cancellous (spongy) bone. |
| trachanter | Large process below the neck of the femur. |
| tubercle | Small, rounded process on a bone. |
| tuberosity | Large, rounded process on a bone. |
| vertebra | Back bone, composed of: vertebral body, vertebral arch, spinous process, transverse processes, lamina, and neural canal. |
| xiphoid process | Lower, narrow portion of the sternum. |
| yellow bone marrow | Fatty tissue found in the diaphyses of long bones. |
