Download Skeletal Muscle Tissue

• Muscle Tissue: composed of cells
(‘fibers’) specialized for
contraction
– Skeletal
• Muscle Tissue: composed of cells
(‘fibers’) specialized for
contraction
– Skeletal
– Cardiac
• Muscle Tissue: composed of cells
(‘fibers’) specialized for
contraction
– Skeletal
– Cardiac
– Smooth
• Muscle Tissue: composed of cells
(‘fibers’) specialized for
contraction
– Skeletal
– Cardiac
– Smooth
 All muscle tissues have a
reticular fiber matrix
• Skeletal Muscle Tissue
– Composed of closely packed
skeletal muscle cells
• Skeletal Muscle Tissue
– Features of skeletal muscle cells:
• Striated
• Can be very long
• Multinucleated
• Cannot divide, but new cells can be
produced from “satellite cells”
• Require neural stimulation
• Skeletal Muscle Tissue
– Features of skeletal muscle cells:
• Striated
• Can be very long
• Multinucleated
• Cannot divide, but new cells can be
produced from “satellite cells”
• Require neural stimulation
• Voluntary
– Functions of Skeletal Muscle
Tissue
•Voluntary movement
– Functions of Skeletal Muscle
Tissue
•Voluntary movement
• Forms some sphincters
– Functions of Skeletal Muscle
Tissue
• Voluntary movement
• Forms some sphincters
• Protection of some organs
• Stabilization of some joints
• Posture
• Heat production
• Cardiac muscle tissue
–Features of cardiac muscle cells
• Striated
• Branched
• Intercalated disks
• Cannot divide
• No satellite cells
• Contract rhythmically
• Cardiac muscle tissue
– Features of cardiac muscle cells
• Striated
• Branched
• Intercalated disks
• Cannot divide
• No satellite cells
• Contract rhythmically
• No neural stimulation required
• Smooth muscle tissue
– Composed of smooth muscle cells
– Features of smooth muscle cells
• Non-striated
• May not require neural
stimulation
• Can divide
• Involuntary
– Functions of smooth muscle
• Internal movement of food, etc.
• Blood vessel diameter
• Bronchiole diameter
• Pupil diameter
• Neural Tissue
– Composed of neurons
and glial cells (neuroglia)
• Neural Tissue
– Features of neurons
• Neural Tissue
– Features of neurons
• Cell body (soma)
• Neural Tissue
– Features of neurons
• Cell body (soma)
• Neural Tissue
– Features of neurons
• Cell body (soma)
• Dendrites
• Neural Tissue
– Features of neurons
• Cell body (soma)
• Dendrites
• Axons (nerve fibers)
• Neural Tissue
– Features of neurons
• Cell body (soma)
• Dendrites
• Axons (nerve fibers)
• Cannot divide (?)
– Neural tissue arranged as
‘grey matter’ and ‘white
matter’