Muscles Flashcards
Muscle directly responsible for the observed movement (prime mover)
Agonist Muscle
Muscle that acts in opposition to the contraction produced by an agonist muscle
Antagonist Muscle
A ligamentous sac that surrounds the articular cavity of a freely movable joint
Joint Capsules
Ability to maintain or control joint movement or position
Joint Stability - Definition
Joint Stability - Achieved by
- Structure of joints (muscle ligaments and joint capsules)
- Neuro-muscular system
Joint Stability - Joints 4 total
Scapulothoracic (over the heart)
Lumbar spine (lower back)
Knees
Feet
Range of uninhabited movement around a joint or body segment
Joint Mobility - Definition
Joint Mobility - Achieved by
- Structure of joints
- Neuro-muscular system
Joint Mobility - Joints 4 total
Glenohumeral (shoulders)
Thoracic Spine (mid-upper back)
Hip
Ankles
A strong, fibrous tissue that connects one bone to another.
Ligaments
Shoulder Girdle - Parts 1 of 3 (Posterior)
Scapula
Acromian Process
Clavicle
Thorax - Parts 1
Ribs
Pelvic Girdle - Parts 3
Ischial
Llilum
Sacrum -Keystone (top attaches to the lumbar spine)
Biceps Brachii - Parts 1
Bicep Brachii
Biceps Brachii - Joint Actions (1 total)
Elbow flexion (bicep curl)
Deltoids - Parts 2
Middle deltoid
Posterior deltoid
Deltoids - Joint Actions (4 total)
Shoulder: Flexion ABduction Horizontal ADduction Horizontal ABduction
Latissimus Dorsi - Parts 1
Latissimus dorsi
Latissimus Dorsi - Joint Actions (3 total)
Shoulder:
Extension
ADduction
Horizontal ABduction
Trapezius - Parts 3
Upper trapezius
Middle trapezius
Lower trapezius
Upper Trapezuis - Joint Action
Elevate scapula
Middle Trapezuis - Joint Action
ADducts scapula
Lower Trapezuis - Joint Action
Depress scapula
Rhomboid - Parts 1 of 2
Rhomboid minor
Rhomboid major
Rhomboid - Joint Action (1 total)
ADduction (rows)
Pectoralis Major - Parts 1
Pectoralis Major
Pectoralis Major - Joint Action (4 total)
Shoulder: Flexion Extension ADduction Horizontal ADduction
Quadratus Lumborum - Parts 1
Quadratus Lumborum
Quadratus Lumborum - Joint Actions (1 total)
Lateral flexion (tea cups)
Erector Spinae - Parts 3
Longissimus
Spinalis
ILiocostalis