Practical 2 is next week Same time and

Practical 2 is next week !!!! Same time and place as your usual lab Covers the Bone Markings to Joints Lab 60 Questions, multiple choice Questions fairly evenly divided among labs Emphasis on muscles, axial, appen. skeleton

What is a Joint? A place where bones connect or articulate Bones are held together at a joint by ligaments There are 3 types of joints….

Types of Joints Fibrous Joints Allow very little to no movement No joint cavity Cartilaginous Joints Most allow moderate amounts of movement No joint cavity Pad of cartilage in between bones at joint Synovial Joints Allow lots of movement Joint cavity present

Fibrous

Types of Joints Fibrous Joints Allow very little to no movement No joint cavity Cartilaginous Joints Allows a moderate amount of movement No joint cavity Pad of cartilage in the joint Synovial Joints Allow lots of movement Joint cavity present

Cartilaginous

Types of Joints Fibrous Joints Allow very little to no movement No joint cavity Cartilaginous Joints Most allow moderate amounts of movement No joint cavity Pad of cartilage in the joint Synovial Joints Allow lots of movement Joint cavity present

Synovial

Types of Synovial Joints Flat articulating surfaces Sliding movement in 1 or 2 planes Examples: intercarpal joints intertarsal joints

Types of Synovial Joints Movement in 1 plane (like a door) Examples: elbow interphalangeal joints knee joint

Types of Synovial Joints Allows for rotation Examples: radius-ulna joint atlas-axis joint

Types of Synovial Joints Allows 2 -way movement Examples: wrist joint knuckles

Types of Synovial Joints Allows 2 -way movement Examples: thumb joint

Types of Synovial Joints Allows lots of motion Examples: shoulder joint hip joint

Synovial Joint Anatomy * Synovial Fluid = joint oil * * The Synovial Membrane secretes synovial fluid into the joint

Lets Dissect a Cow Synovial Joint !!! Find These Things: 1. Ligaments 2. Synovial Membrane 3. Articular Cartilage 4. Joint Cavity 5. Yellow Bone Marrow Which joint are you dissecting? ? ?

The Knee Joint Largest & most complex joint in the body Be familiar with the following: medial meniscus lateral meniscus anterior cruciate ligament (ACL) posterior cruciate ligament (PCL)

The Knee Joint – Pg. 128 -129 * *

Joint Disorders Sprain ligaments holding the joint together are damaged by hyperextension or a tear EX: ankle sprain Dislocation bone(s) are forced out of their normal position in the joint bone “goes out of its socket”

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