General Terms and Definitions for Test#3 Flashcards
How many bones exist in the axial skeleton? Appendicular Skeleton
80, 126
What are the 5 bone types?
Long, short, flat, irregular, sesamoid
Where do sutural bones lie?
In joints between skull bones
What are some characteristics of Long bones?
- Greater length, than width
- Consists of Shafts and extremities
- slightly curved for strength
- Most compact bone is in diaphysis, spongy in epiphysis
Examples: Femur, Tibia, humerous, Ulna
Short Bone Characteritics
- Nearly equal in length and width
- Mainly spongy bone except for surface
- Example (Carpal Bones of Wrist)
Flat Bone Characteristics
- Generally thin
- two nearly parrelle plates of compact bone enclosing a layer of spongy
- Extensive areas for muscle attachement
Ex. Carnial, Sternum, Ribs, scapulae
Irregular Bone characteristics
- Complex shapes, varies in amount of spongy and compact bone
- Ex. Vertebre, hip Bones, Clacaneous
Sesamoid Bone Characteristics
- Can develop in certain tendons that have considerable friction, tension, and physical stress
- Protect from excessive wear and tear
- Varies from person to person
- Not always completely ossefied
Sutrural Bone Characteristics
(Wormian Bones)
- Identified by location rather than shape
- In between cranial bones
Foramen
Opening
Fossa
Shallow depression
Sulcus
Groove
Meatus
Tubelike passageway or canal
Condye
Large round prominance at the end of a bone, typically part of a joint
Malleolus
Bony prominence, on each side of the ankle
Facet
Smooth flat articular surface
Eminence
Relatively small projection or bump
Trochanter
Very Large Projection
Tuberosity
Large, rounded, typically, roughened projection (usually on the shaft, perhaps the base of a bone)
Tubercle
Small rounded projection (found near the head of a bone)
Parallel Arrangement of Muscles
- Fascicles run parallel to longitudinal axis of muscle, terminate at either end of flat tension
Fusiform Arrangement
Similar to Parallel, muscle tapers toward tendons where diameter is less than the belly.
Circular Arrangement
Sphincter, “squeezer”, sphincter muscles that enclose, an orifice
Triangular (Convergent) Arrangement
Gives a triangular appearance, Spread over a broad area and converge, at a thick central tendon