Skeletal Muscle Characteristics Function ANATOMYMUSCULAR SYSTEM November 1

Skeletal Muscle Characteristics & Function ANATOMYMUSCULAR SYSTEM November 1, 2017

INTRODUCTION How many skeletal muscles can you name? What are the characteristics of skeletal muscles Functions?

OBJECTIVES Students will be able to: Identify skeletal muscle origin & insertion List the ways we name of skeletal muscles

SKELETAL MUSCLES One of the main characteristics of Skeletal muscles is it ATTACHES to bone. Skeletal Muscles ORIGINATE on some portion of a bone and INSERT on another

SKELETAL MUSCLE ATTACHMENTS Origin Insertion Most proximal attachment Most distal attachment Attached to least mobile bone Attached to most mobile bone Shorter tendon Longer tendon Muscle fibers closer to attachment Muscle fibers farther from attachment First part of name Last part of name

NAMING SKELETAL MUSCLES Action or Function Name or part of name indicates function Flexor Hallucis Longus Extensor Hallucis Longus

NAMING SKELETAL MUSCLES Direction of fibers Relative to anatomical planes External Oblique Internal Oblique

NAMING SKELETAL MUSCLES Location Tibialis Anterior Tibialis Posterior Number of Division Biceps Brachii Triceps Brachii

NAMING SKELETAL MUSCLES Shape Geometric shapes Deltoid Triangular (Delta) Size Large v small Gluteus Maximus Gluteus Minimus Pectoralis Major Pectoralis Minor

NAMING SKELETAL MUSCLES Points of Attachments Origin = first part of name Insertion = last part of name Brachioradialis Origin – brachium (arm) Insertion – radius