32 terms

Anatomy Exam 2 Set 2

to grow upon
Epiphyseal Cartilage
growth plate - bone grows longer here (one at each end)
to grow across
- Superior and posterior to soft palate
- Two Tonsils - pharyngeal and tubal tonsils
- Tonsils part of immune system
- From soft palate to epiglottis
- Two tonsils - Palatine and lingual
- From epiglottis to esophagus and trachea
- Food moves by peristalsis to stomach
- 2 to 2.5 mm thick
- Hardest material in the body - 92% hydroxyapatite
- Deep to enamel
- More Porous than enamel
- 64.5% hydroxyapatite
Gingiva (gum)
forms seal against tooth - protects dentin
Pulp Cavity
contains pulp - includes vascular supply and nerves
Bone (Alveolar Bone)
depression in bone that root anchors to - formed from ......?
Periodontal ligament or membrane
- Pointing to Watermelon colored line
- Is a continuation of the periosteum
- Surrounds root of the tooth
- Attaches to cementum
- Pointing to Green colored line
- Helps anchor tooth into alveolus
- Is calcified connective tissue
Root Canal
- Contains pulp
Spongy Bone
- yellow or red - red is where rbc's are formed
- formed by epiphyseal plate
- erodes the medullary canal as the bone grows
- can form callus on inside of a break
Compact Bone
- very dense and strong
- periosteum forms it
- bone gets greater diameter as it grows.
Medullar Canal or Marrow Cavity
Articular Cartilage
- Covers epiphysis - to periosteum
- Found in all moveable joints
- Reduces friction
- Surrounds bone except for area where articular cartilage is.
- Four main functions
1. Shares blood supply
2. Tendons attach to this
3. Increases diameter as bone grows
4. Forms callus on the outside
Blood vessel
- Attaches Periosteum to bone
In a broken bone the Periosteum forms the ______ on the outside, endosteum forms the _______ on the inside. This makes the bone very strong at the area of a break.
Joint Capsule
- dense connective tissue
- impermeable- holds synovial fluid in joint
- Protects synovial membrane
- May help stabilize the joint as extracapsular ligament
Articular Cartilage
- Covers epiphysis - to periosteum
- Found in all moveable joints
- Reduces friction, distributes pressure, and shock absorption
Synovial Fluid
This space is exaggerated potential space. Isn't really as large in real life as it appears here.
Synovial Membrane
- Connective tissue
- Secretes _______ fluid- lubricates, dissipates heat, and some shock absorption
- May be to stabilize joint
- Initiates movement
- Is sometimes extension of synovial membrane
- Acts as a bumper between structures near the joint
Intracapsular ligament
- Not all joints have these
- Stabilizes joint
- Connects Muscle to Muscle, or Muscle to bone
Extracapsular Ligament (collateral ligament)
- Not all joints have these
- Stabilizes joint
- Found on sides of joint where motion should NOT
- Thickening of joint capsule