Dr. ANAND SRINIVASAN. Contraction for Locomotion and skeletal movement.
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Transcript of Dr. ANAND SRINIVASAN. Contraction for Locomotion and skeletal movement.
Dr. ANAND SRINIVASAN
Contraction for
Locomotion and skeletal movement
Skeletal muscle Striated and voluntary
Cardiac muscle striated and involuntary
Smooth muscle non striated and involuntary
Muscle cells are elongated or tubular.
They have multiple nuclei
Nuclei flat & located on periphery of the cell.
Skeletal muscle is striated. i.e. it has an alternating pattern of light and
darks bands.
The cells are not as long as skeletal muscles cells
Often are branched cells.
Nuclei are located centrally in the cell.
Cardiac muscle is also striated.
Cardiac muscle contains intercalated discs.
Smooth muscle cell are spindle shaped.
They have a single centrally located nucleus.
They do not have visible striations
24 year old
Base ball bowler
Where is the problem????
Site where two or more bones articulate or come together
Linked by fibrous material
No movement – “Immovable joint”
Tooth attached to mandible by Periodontal
ligament
Tibia and Fibula attached by interosseous membrane
Formed by fibrocartilage
Acts as a shock absorber
CHARACTERISTIC FEATURES Articular or hyaline cartilage Capsule Synovial membrane Synovial fluid
OTHER Fat pads or bursa Menisci Ligaments
One bone is ball shaped and articulates with cup shaped other bone
E.g. ShoulderHip
Like hinge on a door
Example : Elbow Knee Ankle Interphalangeal
Articular surfaces flat
E.g. Between carpal & tarsal bones
Example : Dens of axis
rotating over Atlas
Example : Temporomandibular
joint
Metacarpophalayngeal joint
Like a man sitting on a saddle
E.g.Trapezium & 1st Metacarpal
Anatomy & Physiology – Ross and Wilson