Chp 2 Flashcards
(127 cards)
Bone
- Mineralized connective tissue
- Rigid and bears weight
- Changes shape with pressure
Cartilage
- Firm, but nonmineralized
- Limited weight-bearing
Functions of Bone
Attachment-muscle to bone
Protection- protect organs
Support- for the body in gen. and teeth
Storage-store calcium and bone marrow
The phalanges are short in length. Why are they called long bones?
Long bones have a narrow diaphysis, or shaft, for the attachment of muscles, and epiphyses for the articulation of synovial joints.
What is the function of short bones?
Increase mobility of hands and feet
Example of irregular bones
Zygomatic bone
Maxillary bone
Examples of Spongy bone
Trabeculae
Marrow cavity
The skulls compact bone is called
cortical plates
Inbetween the outer and inner cortical plates are
spongy bone called dipole
compact bone
dense outer layer or lamellae
spongy bone
composed of thin layers of trabeculae
forms central medullary region
filled with fat and blood forming tissue called bone marrow
Joints are
contact points or articulation between bones
Joints are classified according to
the way the bones are united
Types of joints
fibrous
cartilagonous
synovial
Examples of fibrous joints
sutures
gomphosis
What type of joint are sutures and what kinds are there
Fibrous joints
Coronal
Squamous
Lamboid
What type of joint is gomphosis and what is it
Fibrous
Joint that attaches teeth
What connective tissue binds the teeth to the bone?
Periodontal ligament
What is the difference between a synchondrosis and a synostosis?
Synchondrosis is the cartilaginous growth plate between bones.
Once the bone has stopped growing the cartilage is replaced by bone, and the joint is called a synostosis.
Types of cartilaginous joints
Synchondrosis
symphysis
Symphysis
Fibrocartilage disc joins the bodies of the vertebrae
Synchondrosis is responsible for
forming the growth plate aka the length of a bone
synostosis happens
once we hit puberty and the diaphysis and epiphyses fuse forming an articulation
In addition to joining the bodies of the vertebrae, what is another
Acts as a shock absorber