1. Muscle Tissue Function is to produce movement (contract)
Contractive cells can shorten & thicken
Three types
Skeletal muscle
Cardiac muscle
Smooth muscle

2. Muscle Tissue Types Skeletal muscle Structure: Function: Location:
Muscle Fiber – long, cylindrical cell
Many nuclei in each cell
Cells are striated – alternating light & dark pattern
Function:
Voluntary movement:
Pull bones (body movement)
Pull skin (facial expression)
Location:
Attached to bones
Figure 3.20a

3. Muscle Tissue Types Cardiac muscle Structure: Function: Location:
Cells are striated
One nucleus per cell
Cells joined end-to-end with intercalated disk in-between.
Function:
Involuntary heart movement
Pumping blood
Location:
Heart muscle
Figure 3.20b

4. Muscle Tissue Types Smooth muscle Structure Function Location
Shorter cells
One nucleus per cell
No visible striations
Function
Involuntary movement
Peristalsis- wave-like movement pushes food through digestive system
Location
Walls of hollow internal organs
Ex: Stomach, Intestines, Bladder, Uterus, Blood vessels
Figure 3.20c

5. Nervous Tissue Structure:
Nerve cells- neurons with cytoplasmic extensions
Neuroglial cells- support neurons
Function:
Sense changes in the environment
Respond by transmitting impulses
Location:
Brain
Spinal cord
Peripheral nerves
Figure 3.21