Muscle and Nervous Tissue - graftonps.org

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