1. Anatomy-Muscular System
Skeletal Muscle Characteristics &
Function
Anatomy-Muscular System
November 1, 2017

2. Introduction How many skeletal muscles can you name?
What are the characteristics of skeletal muscles
Functions?

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

4. 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

5. Skeletal Muscle Attachments
Origin
Most proximal attachment
Attached to least mobile bone
Shorter tendon
Muscle fibers closer to attachment
First part of name
Insertion
Most distal attachment
Attached to most mobile bone
Longer tendon
Muscle fibers farther from attachment
Last part of name

6. Naming Skeletal Muscles
Action or Function
Name or part of name indicates function
Flexor
Flexor Hallucis Longus
Extensor
Extensor Hallucis Longus

7. Naming Skeletal Muscles
Direction of fibers
Relative to anatomical planes
External Oblique
Internal Oblique

8. Naming Skeletal Muscles
Location
Tibialis Anterior
Tibialis Posterior
Number of Division
Biceps Brachii
Triceps Brachii

9. Naming Skeletal Muscles
Shape
Geometric shapes
Deltoid
Triangular (Delta)
Size
Large v small
Gluteus Maximus
Gluteus Minimus
Pectoralis Major
Pectoralis Minor

10. Naming Skeletal Muscles
Points of Attachments
Origin = first part of name
Insertion = last part of name
Brachioradialis
Origin – brachium (arm)
Insertion – radius