Skeletal System: Vocabulary and Appendicular Skeleton

Language of the bones

1. Process- projection– Example: mastoid process and styloid process

2. Articulation- joint– Ex: Temporalmandibular joint (TMJ) – http://www.youtube.com/watch?v=JMOrT10iEdc

3. Fossa- depression of a bone– Ex: Anterior Cranial Fossa

4. Sinus- cavity in the bone– Ex: Sphenoid and ethmoid sinuses

Language of the bones Continued…5. Forman- hole in the bone– Ex: Forman magnum

6. Meatus- tubular structure in a bone– Ex: External Auditory Meatus (Ear hole)

7. Condyles- large smooth curved surfaces forms joint with another bone--Ex: Medial epicondyl

8. Tubercles- Warty outgrowth allows tendons to attach– Ex: greater tubercle

Identify the terms we just learned below 1-7

HumerusCross section of the skull

Lateral View

2 girdles

• A girdle is a collection of bones that attach to the axial skeleton

1. Upper Extremity or Pectoral Girdle: consists of the clavicle and scapula– Connects at the sternoclavicular joint (clavicle and menubrium)

2. Lower Extremity or Pelvic Girdle: consists of illium (hip), ischium (butt), and the pubic bone– Joins to make the acetabulum

Pectoral GirdleAttaches to the upper

extremities to the axial skeleton

• Humerus• Radius• Ulna• Carpals• Metacarpals• Phalanges

Pelvic Girdle

• Attaches the lower extremities to the axial skeleton

Pelvic Girdle

• Lower extremities include:• Femur• Patella• Tibia• Fibula• Tarsals• Metatarsals• Phalanges