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Muscle and Nervous Tissue
Chapter 3 Miss Wheeler
Muscle Tissue � There are 3 types of muscle tissue
� Skeletal muscle � Cardiac muscle � Smooth muscle
Skeletal Muscle � Attached to
skeleton � Voluntary muscles-
You control them. � When they
contract, they pull on bones and skin. Which controls the movement of the body etc.
Skeletal Muscle � Cells are long and
cylindrical (long spaghetti-like cells)
� Cells are mutlinucleated- have more than one nucleus in each cell
� Cell have striations- parallel stripes”
Cardiac Muscle � Found only in the heart! � Contract to pump blood through blood
vessels � Involuntary muscles- Your brain controls
them.
Cardiac Muscle � Cells have striations-
parallel stripes � Cells have only 1
nucleus per cell � Cells appear
branched � Cells fit together at
junctions called intercalated disks
Smooth Muscle
� Found in walls of hollow organs (stomach, uterus, etc.)
� Functions to move material through the body (digesting food)
� Involuntary muscles- Brain controls them
� No striations- SMOOTH. No stripes.
� 1 nucleus per cell
Muscle Tissue Summary Muscle Tissue Appearance Nucleus Control
Skeletal Striated Multi Voluntary
Cardiac Striated Single Involuntary
Smooth Not striated Single Involuntary
Nervous Tissue � Located in brain, spinal cord, and nerves � Cells are called neurons � Neurons send and received impulses from
one part of the body to another
Nervous Tissue � Cell body- large center of cell where
nucleus is � Dendrites- receive impulses from other cells � Axon- send impulses to other cells