Contains upper and lower extremities
Pectoral Girdle: Scapula & Clavicle, together forming an incomplete ring
Suspends the upper extremities lateral to the trunk
Stabilized by muscles attaching to sternum, ribs, and vertebrae.
Organization of Connective Tissues
Dense layer of collagen fibers that surround entire muscle
Separates muscle from nearby tissues and organs
Connected to deep fascia
Divides skeletal muscle into compartments, that contain bundles
Thick and thin involved in contraction
Actinin, nebulin, titin involved in stabilization
Stimulus arrives at the neuromuscular junction in the form of an
Causes cisternae of SR to release calcium.
Articulations: functional joints between bones
Allow bone growth and development, allows skeleton to change shape,
and provide body movement with skeletal muscles.
Degree of Movement
Blood Vessels and Nerves
Muscle contractions need extensive quantities of energy, blood vessels
deliver necessary oxygen and nutrients.
Follow same branching course through perimysium
Skeletal muscles contract only when CNS stimulates them.
Held together by a plate of hyaline cartilage or a fibrocartilage disc
Articulating surfaces are covered with hyaline cartilage,
with a disc of shock-absorbing fibrocartilage
sandwiched between the bones
Movement is li
Most common joint within the body
Defined by presence of a fluid filled cavity between articulating joints
Bony surfaces are covered in hyaline cartilage, known as articular
Absorbs shock and reduces friction.
Joint held together
Formed by the articulation of the glenoid fossa and head of the
Contains a rim of fibrocartilage = glenoid laberum.
Stabilized by muscles referred to as a rotator cuff.
Coracohumeral Ligament: Connects coracoid and humerus
Anatomical Terms of Movement
Plane (Gliding) Joints: Articulating surfaces move back and forth or side
Referred to as nonaxial joints for they do not occur around an
Articular processes o
Types of Muscles
For movement of bones
Functions: Listed below
Circulates blood and maintains blood pressure
Short, branched, and striated with single nucleus
Moves food, urine, reproductive tract secretions