The Muscular System Notes pg 65 Did you get your tickets???

… to the GUN show??? Functions: -move your bones -move materials through your organs - Produce heat Can you think of an example of how muscles maintain HOMEOSTASIS in the body???

Types of Muscles What are the 3 types of muscle? (look on pg 905 for the answer) 1.Skeletal 2.Smooth 3.Cardiac Glue on pg 64

Can you move all your muscles? Some muscles are voluntary, some are involuntary Voluntary – you have conscious control Involuntary – NOT under conscious control, works on its own

pg 64 - Skeletal Muscles Attached to the bones Voluntary

Smooth Muscles Found in digestive system (stomach, intestines), and in blood vessels. involuntary

Cardiac Muscles Found only in the HEART Involuntary Which muscle do you think is the strongest?

Back to pg 65 - Muscle contraction requires energy and makes heat Muscle Fatigue - If muscles use up all their energy = they get tired and start using stored energy LIKE FAT

Problems with the Muscles Cramps – are usually caused by your muscles getting too tired, or dehydrated

Steroids Steroids - help build muscle, but they can damage the body