Skeletal System Flashcards
Function of Skeletal System
- Function
- Protection
- Assist in Movement
- Mineral Homeostasis
- Blood Cell Production
- Energy Storage
Types of bones
Long, short, irregular, sesamoids
Femur, Metacarpals, Phalanges
Long Bone
Carpals/Tarsal
Short Bone
Patella is what type of bone
Sesamoid
Vertebrae, Sacrum are what type of bones
Irregular Bones
how many named bones
206
Division of Skeletal System
Axial Skeleton & Appendicular Skeleton
bones that lie around the longitudinal axis of the body
Axial Skeleton
Skull, ribs, sternum and vertebral column (which division)
Axial Skeleton
bones of the upper and lower limbs plus the bones forming the girdle
Appendicular Skeleton
consist of cells (osteocytes) and matrix
Bone Tissue
fibres (collagen) and ground substances (calcium phosphate)
Matrix
Type of Bone Tissue
Spongy Bone and Compact Bone
reduce friction/ prevent wear and tear at joints
Articular Cartilage on bones ends
provide strength and hardness to bones
Compact bones in wall of bone
contains red bone marrow
spongy bones in epiphyses
contains yellow bone marrow
Medullar Cavity
double membrane secured to underlying bone
Periosteum
nourishes bone and provides anchoring points for tendons/ligaments
Periosteum
contribute to the hardness of the bones and teeth
calcium
Other role of calcium
blood clotting, muscle contraction, and nerve impulse at the synapse
where two bones meet
Joints
3 Classifications of Joints
Fibrous Joints
Cartilaginous Joints
Synovial Joints
immovable joint
Fibrous Joints
bones held together by dense collagen fibers
Fibrous Joints
slightly movable joint
Cartilaginous Joints
bones held together by cartilage
Cartilaginous Joints
freely movable joint
synovial joint
bones held together by ligament
synovial joint
fluid is found in the space between the bone
Synovial Joint
articulating bones are held very closely together by dense irregular connective tissue
Fibrous Joint
Sutures between skull bones , teeth in jaw
Fibrous Joints
pubic symphysis, intervertebral disc, ribs to sternum
Cartilaginous Joint
contains synovial movement
Synovial Joint
hip, knee, shoulder, finger joint
Synovial Joint
Function of Synovial Fluid
Lubricates the Joint
Absorbs shock
supplies O and nutrients
Types of Synovial Joint
Ball and Socket
Hinge
ball like surface at one bone fitting into a cup like depression of another bine
Ball and Socket Joint
Shoulder and Hip Joint
Ball and Socket
produce a motion like that of a hinged door
Hinge Joint
Knee and Elbow
Hinge Joint