AnatomyMuscular System Skeletal Muscle Naming Bell Work Grab

Anatomy-Muscular System Skeletal Muscle Naming

Bell Work Grab a note taker from the front table n Discuss in your groups the muscles that you know and how YOU THINK they have been named n

Objectives n Students will be able to: Identify skeletal muscle origin & insertion n List the ways to name skeletal muscles n

Skeletal Muscles n Skeletal muscles ATTACH to bone through a tendon n Skeletal Muscles ORIGINATE on some portion of a bone and INSERT on another

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

Naming Skeletal Muscles 1. Action or Function n Name or part of name tells function n Flexor Hallucis Longus n Extensor Hallucis Longus

Naming Skeletal Muscles 2. Direction of fibers n Anatomical planes n External Oblique n Internal Oblique

Naming Skeletal Muscles 3. Location/Direction n Tibialis Anterior n Tibialis Posterior n 4. Number of Tendons n Triceps Brachii n Biceps Brachii

Naming Skeletal Muscles 5. Shape n Geometric shapes n Deltoid n Triangular (Delta) 6. Size n Large v Small Short v Long n Gluteus Maximus n Gluteus Minimus n Pectoralis Major n Pectoralis Minor n Peroneus Longus n Peroneus Brevis

Naming Skeletal Muscles 7. Points of Attachments n Origin = first part of name n Insertion = last part of name n Brachioradialis n Origin-brachium n Insertion- radius

Not one or the other n Some muscles use more than one way to name it Tibialis Anterior n Extensor Hallicus Longus n Rectus Abdominus n

Closure 1. 2. List the 7 ways muscles are named List 3 characteristics of origins and 3 characteristics of insertions