Articulations Chapter 6 - San Diego Mesa College

Articulations Chapter 6 - San Diego Mesa College

Articulations Chapter 8 Classification of Joints (Articulations): Joint- Where two bones interact Three functional classes of joints Synarthroses

Amphiarthroses Immovable e.g., sutures Slightly movable e.g., pubic symphysis, distal radius/ulna

Diarthroses Freely movable e.g., shoulder, elbow etc. Classification Three

of Joints (Articulations): structural classes of joints Fibrous No space between articulating bones; held together by dense connective tissue e.g., sutures, distal radius/ulna May be functionally synarthroses or amphiarthroses

Cartilagenous No space between articulating bones; held together by cartilage e.g., pubic symphysis May be funtionally synarthroses or amphiarthroses

Synovial Space (synovial/joint cavity) between articulating bones e.g., shoulder, elbow etc. Functionally are diarthroses The Structure of Synovial Joints The Structure of Synovial Joints

Major synovial joints in the body spinal (e.g. cervical and lumbar) shoulder (glenohumeral) elbow proximal radio-ulnar wrist fingers hip knee ankle/foot

toes temporomandibular (TMJ) Movements occurring at synovial joints Flexion Extension Hyperextension Lateral flexion Abduction

Adduction Rt. lateral flexion Lt. lateral flexion Rotation: Left/Right Medial (internal) Lateral (external)

Pronation Supination Dorsiflexion/Plantarflexion Inversion/Eversion Elevation/Depression Protraction/Retraction Opposition

Movement at synovial joints occurs through the activity of skeletal muscles Anatomy of skeletal muscles Anatomy of the Muscular System Origin - Muscle attachment that remains

fixed Insertion - Muscle attachment that moves Action - What movement a muscle produces. Movement usually occurs at joints i.e. flexion, extension, abduction, etc. For muscles to create a movement, they can only pull, not push

Muscles in the body rarely work alone, & are usually arranged in groups surrounding a joint A muscle that contracts to create the desired action is known as an agonist or prime mover A muscle that helps the agonist is a synergist. Some synergists act as fixators A muscle that opposes the action of the

agonist, therefore undoing the desired action is an antagonist Skeletal muscle movements Flexion/extension Abduction/adduction Rotation left/right; internal(medial)/external(lateral) pronation/supination Elevation/depression Protraction/retraction

Dorsiflexion/plantarflexion Inversion/eversion *note: muscles of facial expression (e.g. orbicularis oculi; orbicularis oris) produce movements of the features of the face, and therefore the actions use more descriptive terminology

Recently Viewed Presentations

  • Us Trends in Refractive Surgery: 1998

    Us Trends in Refractive Surgery: 1998

    U.S. Trends in Refractive Surgery: 2011 ISRS Survey - Partner of AAO - Richard J. Duffey, MD David Leaming, MD Refractive Subspecialty Day Orlando: October 22, 2011 DUFFEY 2011 Total LVC Volume w/i ISRS (1000s) * 6% increase in Total...
  • SmartPlant Instrumentation - SPI LTUF

    SmartPlant Instrumentation - SPI LTUF

    These Queires will be accessable in QBF format from the installation foltder as well. Reference Explorer. Installation Folder. Engineering Data Editor, business drives and benefits. Improve usability. Ease of use. Intuitive, no need for training (like MS Excel)
  • Janet Davis Dept. of Computer Science Grinnell College

    Janet Davis Dept. of Computer Science Grinnell College

    Generating Design Directions for Persuasive Technology with the Inspiration Card Workshop Janet Davis Dept. of Computer Science Grinnell College Findings: Barriers Evaluation Workshop planning Workshop outcomes + Workshop is short straightforward to plan & facilitate flexible Design concepts are plentiful...
  • Study Theme 4 - St Andrew's and St Brides's high school

    Study Theme 4 - St Andrew's and St Brides's high school

    There are FOUR voting systems in use in the UK at the moment. The First Past The Post (FPTP) is used for UK General Elections. The Additional Member System (AMS) is used for Scottish parliament elections. The Single Transferable Vote...
  • Genres - Berwick Area School District

    Genres - Berwick Area School District

    When you speak about genres and literature, genre means a category, or kind of story. Genres. ... cultural stories that are passed down through generations by word of mouth, such as folk tales, fairy tales, legends, fables, tall tales and...
  • Chapter 2 Numerical descriptors

    Chapter 2 Numerical descriptors

    Individual #25 has a survival of 7.9 years, which is 3.55 years above the third quartile. This is more than 1.5 IQR = 3.225 years. Individual #25 is a suspected outlier. Some software programs create "modified boxplots," in which suspected...
  • Classification - Pinecrest Preparatory Academy Charter High ...

    Classification - Pinecrest Preparatory Academy Charter High ...

    Assigning Scientific Names. First step: describe and give a universally accepted name to each species. One of the easiest ways to classify is using a dichotomous key - following a set of steps / questions to arrive at a conclusion
  • U-series Disequilibrium 1 9/6/12 Lecture outline: Zircon 1)

    U-series Disequilibrium 1 9/6/12 Lecture outline: Zircon 1)

    FACT: most geological samples contain some "initial" aka "detrital" aka "nonradiogenic" thorium PROBLEM: mass specs cannot distinguish between "detrital" 230Th and radiogenic 230Th SAVING GRACE: "detrital" thorium mostly 232Th (quasi-"stable" on U/Th disequilibrium timescale) STRATEGY: measure 232Th in samples, correct...