Muscular System part 1

muscle fibers(cells) + C.T. +nervous tissue + epithelial tissue

1.) Excitability-responds to external stimuli

2.)Contractility-actively shortens along longitudinal axis.

3.)Extensibility-can stretch beyond original length w/o tearing.

4.Elasticity-returns to original size.

• 1.) Latin for little mouse
• 2.) 700 muscles total
• 3.) 40-50% of total body weight
• 4.) Elongated protein packed cells
• 5.)Contract on command

1.) Chemical Energy for the cell is ATP

• 2.) Mechanical Energy allows us to:
• a. produce skeletal and skin movement
• b. maintain posture,position and joints
• c. support soft tissue
• d. regulate incoming/outgoing materialin tract
• e. maintain body temp.

• smooth-hollow organs and tubes
• cardiac-heart

• 1.) striations
• 2.) cylindrical-fibers
• 3.) multiple peripheral nuclei
• 4.) voluntary control
• 5.) cannot divide
• 6.) fatigue over time
• 7.) attached to skeleton/skin