Anatomy l - Movement Basics

Joints are a ___ of two or more bones

Union

True or False

Are Joints movable only?

False, Joints are both Movable and Immovable

When are joints Immovable?

Give an example

Joints are immovable when united by connecting tissue

Example Pelvis

When are joints moveable?

Give an example

Joints are moveable when united by a joint cavity

Example knee joint

Muscle attach to what?

Bones

True or False

Muscles span across joints

True

For any given joint we can define a surface called what?

Angle of Joint

What are the two Joint Angles called?

Flexion

Extension

Define Flexion

Decreasing angle at Joint; brings surface closer together

Define Extension

Increasing angle at Joint; surfaces become further apart

What can you know depending on where you find the joint angle?

By knowing where the joint angle is we can determine the muscle group and its action. If the muscle group is located on the same surface as joint angle we know its a flexor muscle and if the joint angle is located on the opposite surface we know it an extension muscle

Using the image where are the flexor surfaces in the Thoracic limb

Using the image provided where are the flexor surfaces in the Pelvic limb