1. Muscular System

2. ROLES of MuscLes
EFFECTOR- organ that becomes active in response to NS stimulation
MOTOR- consumes ATP to do work, produces heat
REGULATOR- regulate bodily functions

3. 3 types of muscle tissue
Skeletal – used for mov’t, maintaining posture
Striated
Voluntary control by CNS
attached to the bones
Smooth – lines walls (bl vessels, digest. & sensory organs)
Not Striated
Involuntary by ANS [internal organs]
Cardiac – heart
Involuntary, self-initiated

5. Additional Features
Deep Fascia – thin connective tissue – wraps around, provides support for muscle
Tendon – connects muscle to bone (ropelike)
Aponeurosis – connects muscle to bone (thin, flat)sometimes connects muscle to muscle

7. Structure of a Muscle
Epimysium – conn. tissue that forms the outer surface of a muscle
Perimysium - conn. tissue that separates one fascicle from another
Endomysium - conn. tissue that separates one muscle fiber from another