+ bone markings and joints. + do now quiz corrections questions pg. 173
DESCRIPTION
+ Objective Explore the joints of the body Arthro- Of a joint; relating to the joint EXAMPLE: Arthritis? Inflammation of the jointTRANSCRIPT
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Bone Markings and Joints
+Do Now
Quiz Corrections Questions pg. 173
+Objective
Explore the joints of the body Arthro-
Of a joint; relating to the joint EXAMPLE: Arthritis? Inflammation of the joint
+Functions
Joints have 2 functions Hold bones together Allow for flexibility
Structural classification Fibrous Cartilaginous Synovial
+Functional Classification
Synarthorotic Joints Amphirarthrotic Joints Diarthrotic Joints
+Synarthrotic Joints
Immovable Joints Joints of the skull Sutures of the flat bones that make up the skull
+Amphirarthrotic Joints
Slightly Movable Joints Vertebrae
Don’t have full motion but provide enough motion with in the back
+Diarthrotic Joints
Freely moveable Shoulders Hips Knees Elbows
Lubricated for joint movement Synovial fluid
+Diarthrotic Joints
Ball and Socket Joints Hip and shoulder Shoulder is relatively unstable
Golf ball on a golf tee
Hinge Joint What do you think of with a hinge? 1 plane of movement Elbow joint
+Diarthrotic Joints
Pivot What does it mean to pivot? Allows for rotational movement
Atlas and axis vertebrae
Saddle Concave/convex articulation
Cowboy sitting on a saddle Biaxial Movement in 2 planes, no rotation
Thumb joint Caropometacarpal joint
+Fibrous Joints
Bones joined by fibrous tissue Some are slightly moveable, most are synarthrotic (no
movement) Sutures – bones interlock and are connected by short
tissue fibers EX: Skull joints
+Cartilaginous Joints
Articulating ends connected by cartilage For the most part, these joints are slightly moveable
EX: Intervertebral joints
+Synovial Joints
Articulating bones are separated by joint cavity containing synovial fluid
Movements vary from 1 axis to multiaxial All synovial joints contain:
Joint surface enclosed by 2 layer articular capsule Outer part of the capsule is a dense fibrous connective
tissue. Lines inside by synovial membrane Articulating surfaces lined with articular cartilage Articular capsule reinforced with ligaments, bursae or
tendon sheaths
+Homework
Read pg. 114 from the packet about “Movements Allowed by Synovial Joints” Understand diagrams on pg. 115
Complete pg. 117 from packet