Muscle and nervous tissue

1. Muscle and Nervous Tissue
(pg 10)

2. Muscle Tissue
•Long, slender cells
•Lots of blood vessels
•Cells can contract (shorten)
•Contractile proteins = actin & myosin, form
microfilaments in the cytoplasm

3. Skeletal Muscle
•Each cell has many nuclei
•Striated: Light and dark bands caused by
arrangement of contractile proteins
•Under voluntary control

4. Smooth Muscle
•Found in organs
•1 nucleus/cell
•No striations
•Involuntary control

5. Cardiac Muscle
•Only in heart
•Striated
•Shorter cells than skeletal muscle
•1 nucleus/cell
•Involuntary

6. Neurons
•Found in brain, spinal cord, and nerves
•Generate and conduct electrical impulses
•Stimulate muscle contraction, sense
environment, responsible for emotions,
memory, and reasoning

7. Neurons

8. Neurons