•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’