Unit 2 Test: The Skeletal System Flashcards
(45 cards)
Examples of long bones
Femur, humerus, limbs
General description of short bones
Length= width
Examples of short bones
Carpals, tarsals, patella
General description of flat bones
Flat, thin surfaces; surfaces for muscle attachment
Examples of flat bones
Skull, scapulae, sternum, ribs
General description of irregular bones
Complex shapes
Examples of irregular bones
Sesamoid, sutural bones
Distinguish between the axial and appendicular skeleton.
Axial= trunk Appendicular= limbs
Most bones have both compact and spongy bone tissue. Why?
Compact= protection
Spongy=reduces weight
What is the diaphysis?
Middle part of bone
What are the epiphysis in the bones
The ends
What are fibrous joints?
Immovable, closely contact each other
Example of fibrous joint
Skull
What are cartilaginous joints?
Limited movement, absorb shock, equalize pressure
Example of cartilaginous joints
Pubic symphysis, 1st rib with sternum, vertebrae
What are synovial joints?
Freely movable
Allow free movement
Contain a joint capsule composed of an outer layer of ligaments, inner layer of synovial fluid
Example of synovial joints
Hip joint, arm joint, knee
Ball-shaped head articulates with cup shaped cavity of another bone
Ball and socket
Oval-shaped confuse of one bone fits into elliptical cavity of another bone
Condyloid joint
Nearly flat or slightly curved
Gliding joint
Convex surface of one bone fits into concave surface of another bone
Hinge joint
Proximal ends of radius and ulna
Pivot joint
Forms between bones whose articulating surfaces have both concave and convex regions
Saddle joint
Example of ball and socket joint
Shoulder, hip
