The Muscular System
Types of Muscles And Their Function:
Voluntary: Skeletal Muscles are often called voluntary. They are called that because you can control their actions if you want or by your own will.
Involuntary: Some actions like breathing or blinking your eyes are automatic. You can do them without thinking about it. Therefore they are called involuntary actions.
Cardiac: Cardiac is another type of involuntary muscles. You cannot make your heart beat faster just by telling it to. The actions you do can change your heart beat
Functions of The Muscular System
The Muscular System helps maintain posture.
Controls Some Actions
The Muscular System controls walking and talking
Assist Us in Actions
The Muscular System helps us when lifting heavy objects.
(Biceps and Triceps are a good example)
Types of Cells/Tissues in Voluntary Muscles
Four Muscle Diseases
- Amyotrophic Lateral Sclerosis
- Endocrine Myopathies
- Hyperthyroid Myopathy
- Periodic Paralysis
Causes: Periodic Paralysis is a genetic disease that is inherited sometimes.
Symptoms: Attacks of muscle weakness or a loss of muscle movement.
Treatments: Potassium is given to stop the attack. Usually it is given by mouth, but if conditions are severe it is given by veins or IV. Acetazolamide is given to prevent the attack.
*Avoiding alcohol and low-carbohydrate diet may help.
A Person May Be Able To Live Without Small Functions But They Won't Be Able To Move Certain Parts Of the Body
Muscular System's Interaction With Other Body System
Interaction With The Nervous System
- Your Nervous System sends signals to your Muscular System
- Actions like picking something up requires the Muscular and Nervous System.
- The nerves are responsible for controlling the muscles.