Muscle System

Minae KwonSarah Bock

Introduction-Over 600 muscles

-Has many functions, including helping you move

-2 types of muscle -3 types of muscle tissue

-Made out of many small cells = muscle fibers

Function

• Provide strength • Posture balance • Movement (CONTRACT)

• Provide heat to keep the body warm

Muscle Shapes

• Spindle shaped- biceps/triceps

• Flat- diaphragm• Triangular- deltiod muscle at

the top of your arm • Circular- around the

mouth/pupils

Skeletal

• Voluntary• Striated• Multi nuclei• Most powerful

movements• Rapid, but easily

fatigued

Smooth

• Involuntary• Single Nuclei

Cardiac• Found in the heart• Straighted• Rareley tired’• Many nuclei

Structure

Structure• Has two types of protein

• MYOSIN AND ACTIN

• Contract muscle

• Myofibril: Bundles of cylindrical organelles

made up of myosin and actin that help muscle contraction

Contraction• Work together in pars (contracting and

relaxing) for some muscles• Always pull, never push• http://www.youtube.com/watch?v=DK7Z-Z7k

KEY

InjuriesCause Injury Cure

StrainOccurs when a muscle or tendon is stretched

Physical Injury Ice and Massage2~3days

Sprain Occurs when a ligament or joint capsule becomes stretched beyond its elastic limits

Physical Injury Ice and Massage2~3days

Cramp Spontaneous, involuntary contraction of skeletal muscle

Physical Injury Stretching and Massage

Torticollis Deformity of the neck causing tilting or rotation to one side

Spasm of the sternocleidomastoid (muscle in your neck) muscle because of strain or infection

Massage and Less stress

InjuriesCause Injury Cure

Fibromyalgia

Abnormal patterns of sleep, pains, fatigue, and numbness and tingling in tender points

Unknown, some suspect genetic disposition

Use caution around tender points, kneeding, petrissage, and friction can break up joinings

Chronic fatigue syndrome Fatigue

Fatigue or the infection of the epstein-barr virus(common)

Massage and Rest

DiseasesCause Injury Cure

McArdle Genetic Mutation Inability to break down glycogen(stored in muscle)(energy source)

Light exercise and physical activity

Muscle Dystrophy(Group of Diseases)

Genetic Mutation Causes muscle weakness and loss of muscle tissue

Surgery

Muscle Atrophy Genetic Mutation/Lack of Use

Causes muscle weakness and loss of muscle tissue

Surgery

Muscle Twitching -Diet deficiency-Drug overdose/side effects

-Wasting of muscle-Weakness-Other findings of nerve dysfunction

SurgeryNo specified treatment

Diseases

• Diseases that have with connection between the spinal cord and the brain affect muscles as well.

>Multiple Sclerosis>Polio

What do muscles need?

• -Glucose >Builds energy got from food

sources• EXCERSISE >Use of muscles in various

parts will keep them healthy• Healthy diet

LinksContraction • http://www.youtube.com/watch?v=DK7Z-Z7kKEY

skeletal muscle and how other muscles work • http://www.youtube.com/watch?v=pbTah5NVOtU&feature=related basic contraction of muscle (put with video)• http://www.youtube.com/watch?v=T-ozRNVhGVg&feature=related three types of muscles• http://www.youtube.com/watch?v=PJDrR3sZPZU

• Why do muscles twitch after a hard workout?• >when sleeping• Nerves send an impulse- minor twitching• Muscle fatigue/injury/stress/caffine/disorders• After intensive activity, the recovery process takes

some time to be complete. Chemical substances that act as neural signals causing the muscles to contract must be recycled. Until they are, the muscle cells remain "irritable" and may spontaneously contract.