MUSCLES
MUSCLES 1. There are over 600 muscles in the body. 2. All muscles contract (shorten) only 3. There are 3 kinds of muscles
Three Kinds of Muscle
SKELETAL MUSCLES 1. Connects to bones… causes them to move 2. Also called banded or striated muscle 3. Also called voluntary muscles .. You make them move 4. These muscles react quickly and tire quickly
Movement When your muscle contracts (shortens) it pulls on the tendon, which pulls on your bone and they move together
Tendon vs. Ligament
The biceps are the flexor The triceps are the extensor
SMOOTH MUSCLE 1. Does not have bands 2. They contract without you thinking about it 3. Also called involuntary muscle 4. Controls breathing, blood pressure and digestion 5. Reacts slowly and tires slowly
CARDIAC MUSCLE 1. Only found in the heart 2. Muscle fibers form mesh 3. Do not tire out 4. Produce their own signal
Voluntary vs. Involuntary Under your control Skeletal Muscle Ex: bicep Not under your control Smooth & cardiac Ex: stomach muscles Some muscles can be both, like your eye muscles
Summary types of muscles Description Found Voluntary or involuntary Skeletal muscle Moves bones Arms, legs voluntary Cardiac Never gets tired Heart Involuntary Smooth Organs Intestine, stomach
Open up muscle workout to complete lab
Integumentary System Forms a protective covering outside the body SKIN Integumentary System Forms a protective covering outside the body
Showing some skin…
Hair Capillaries Epidermis Dermis Fat cell Pacinian Oil gland Artery Vein Sweat gland Meissners corpuscle Pore