Download Connective Tissue Coverings

MUSCULAR SYSTEM POWER POINT
I. Muscular System
joints, heat,etc..
-Protection, movement,
Muscle cells are elongated so called muscle _____
Contraction due to microfilaments
Myo, mys, sarco refer to: ________________
3 types of muscle
1. Skeletal-attach to bones by____, multinucleated.
___________ and ___________
2. SmootH Muscle is _________, single nucleus,
located in_______________,& no _______________
3. CARDIAC MUSCLE
Has __________, involves the ___________, vol or
invol?
II. Microscopic ANATOMY
Sarcolema is the plasma membrane of a muscle fiber
Sarcoplasmic reticulum-stores and releases Ca+
Connective Tissue Coverings:
Endomysium surrounds each muscle fiber
Epimysium surrounds entire skel muscle
Perimysium surrounds a bundle of fibers (fascicle)
Muscles composed of myofibrils that have light bands
(actin) and dark bands (myosin)
The sarcomere has thick ______ and thin _____
filaments
Myosin has heads that allow it to attach to actin.
These form cross bridges with actin during
contraction.