By : Joan Ginard Mateo
Andrea López Alvarez
(9B)
Major organs in the system:
• Skeletal muscle
• Smooth muscle
• Cardiac muscle
Major functions in the system:
works with skeletal system to produce
voluntary movement; helps to
circulate blood and move food
Through the digestive system.
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
Vocabulary List Words and Definitions:
 Myosin: Protein that makes up the thick filaments in striations in
skeletal muscle cells.
 Actin: A protein that mainly makes up the thin filaments in strations in
skeletal muscle cells.
 Neuromuscular Junction: Point of contact between a motor neuron and
the skeletal muscle cell.
 Acetylcholine: Neurotransmitter that diffuses across a sympse and
produces an impulse in the cell membrane of a muscle cell.
 Tendon: Tough connected tissue that joints skeletal muscles to bores.
 Skeletal Muscle: Type of muscle tissue in the body. Represents the
majority of muscle tissue, it’s the type of muscle that powers
movement of the skeleton as in walking and lifting.
 Muscle Fibers: Cylindrical, multinucleate cell composed of numerous
myofibrils that contracts when stimulated.
 Myofibril: Threadlike fibrils that make up the contractive part of a
striated muscle fiber (also called sarcostyle)
Continued Vocabulary:
 Heart: Muscular organ that the blood through the circulatory system
by rhythmic contraction and dilation.
 Biceps: Muscle in the upper arm which turns the hand to face palm
uppermost and flexes the arm and forearm.
 Smooth Muscle: Muscle tissue, that does involuntary movements.
 Cardiac Muscle: Muscle relating to the heart.
 Sarcomere: Structural unit of a myofibril striated muscle.
 Z Disk: A plate like region of a muscle sarcomere to which the plus
ends of acting filaments are attached.
 Triceps: Several muscles having 3 points of attachment at one end.