1. MUSCLE TISSUE

2. MUSCLE TISSUE
Specialized for contraction to produce movement. Muscle cells are elongated and called muscle fibers.
3 Types 1. Skeletal
2. Cardiac
3. Smooth

3. MUSCLE TISSUE SKELETAL MUSCLE TISSUE- packaged in long strands
STRIATIONS- alternating light and dark bands- formed by the internal arrangement of the protein fibers
multinucleate
Voluntary contractions

4. MUSCLE TISSUE
SMOOTH MUSCLE (visceral) TISSUE- forms the walls of the blood vessels and other visceral organs- stomach, bladder, uterus, large intestine, etc.
-No striations-
Smooth muscle contracts slowly-
PERISTALSIS- alternating of contractions in a wavelike motion that keeps food moving through the small intestine, etc.

5. MUSCLE TISSUE
CARDIAC MUSCLE- has striations but only one nucleus per fiber.
Contains junctions called intercalated disks- allows ions to pass freely from cell to cell resulting in rapid contractions

6. NERVOUS TISSUE
NERVE TISSUE- (neurons) have well-developed properties of conductivity and irritability.
- Sends and carries electrochemical signals throughout the body Nerve cells can be as long as 3 feet.
- have a fatty covering called a MYELIN SHEATH
- 2 types of nerve tissue
1. NEURON (or nerve cell)
2. NEUROGLIA

7. NERVOUS TISSUE 3 parts of the NEURON 1. CELL BODY (soma)
2. DENDRITES- receivers- many
3. AXONS- send signal- one

8. NERVOUS TISSUE
CELL BODY- center of the neuron, contains the nucleus as well as other organelles
DENDRITES- receive signals and direct them towards the cell body
AXONS- sends signals away from the cell body to other parts of the body (brain or muscles)

9. NERVOUS TISSUE
NEUROGLIA- make up 90% of the substance of the brain and spinal cord.
Produce the MYELIN SHEATH
Remove unwanted materials via phagocytosis
Aid in the movement of cerebrospinal fluid