1. Nervous Tissue

2. Nervous Tissue Main component of nervous system
Structure: neuron = dendrite + cell body + axon
Function: regulates and controls body functions
Location in the body: brain, spinal cord, nerves

3. Nervous Tissue 2 Major Cell Types: Neurons Respond to stimuli
Transmit electrical impulses
Other cells
Support, insulate, protect neurons

5. Multipolar neuron
Figure 7.8a

10. Neurons

11. Neuromuscular Junction

12. Neuron

14. Muscle Tissue

15. Muscle Tissue
3 types:
Skeletal muscle
Cardiac muscle
Smooth muscle

16. Skeletal Muscle Description: Long, cylindrical
Multinucleate (2+ nuclei)
Striated (banded appearance)
Function:
Muscles contract, pull on bones or skin  cause body movements
Location in the body:
Attached to skeleton
Other features:
Voluntary control

18. Myo tendon
Striated Muscle
Tendon

20. Smooth Muscle Description: No visible striations 1 central nucleus
Spindle-shaped (pointed ends)
Function:
Propel substances through hollow organs
Locations in the body:
Walls of organs (stomach, bladder, uterus, blood vessels)
Other features:
Involuntary control
Contracts slowly
Peristalsis: wavelike motion that moves food through SI

24. Cardiac Muscle Description: Striated Uninucleate (1 nucleus)
Branching cells – fit at junctions called intercalated discs
Function:
Propel blood through blood vessels to all parts of body
Locations in the body:
Walls of the heart
Other features:
Involuntary control