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Muscle System Review
| Question | Answer |
|---|---|
| Extension occurs when the fingers are bent to form a fist | False |
| Fibromyalgia | Chronic, widespread pain in specific muscle sites |
| When the muscles contract, they become longer and thinner | False |
| Abduction | Moving the arms out to the side |
| Adduction | Moving a body part toward the middle |
| Extension | Increasing the angle between two bones |
| Flexion | Bending the lower arm up toward the upper arm |
| Striated, voluntary | Skeletal muscle |
| Striated, involuntary | Cardiac muscle |
| Several mitochondria | Skeletal muscle |
| Non-striated, involuntary | Smooth muscle |
| Heart muscle | Cardiac muscle |
| Attached and supports bones | Skeletal muscle |
| Makes up walls of hollow organs | Smooth muscle |
| Fascia | Dense tissue that surrounds each muscle |
| Acetylcholine | Neurotransmitter that stimulates action potential |
| Motor Neuron | Stimulates skeletal muscle |
| Eccentric | Contraction that occurs when walking down stairs |
| Concentric | Contraction that occurs when you complete a bicep curl |
| Sodium ions | Muscles contract when these ions rush to cells |
| Potassium ions | Muscles relax when these ions leave cell |
| Synapse | Gap between neuron and muscle fiber |
| Sarcolemma | Cell membrane of a muscle cell |
| Frontalis | Muscle that raises eyebrows and wrinkles forehead |
| Tendon | Connects muscle to bone |
| Strain | Injuries due to overstretching of muscles or tendons |
| Sprain | More serious injuries due to tears in the ligaments or cartilage in joints |
| Hernia | Organ protrudes through muscle |
| Muscular Dystrophy | Group of inherited diseases that leads to chronic progressive muscle atrophy; often leads to paralysis or death |
| Pectoralis major | Muscle on upper chest that adducts and flexes the upper arm |
| Trapezius | Muscle on upper back and neck that extends the head and moves the shoulder |
| Tibialis anterior | Muscle on the front of lower leg that flexes and inverts the foot |
| Rectus abdominus | Muscle that extends from the ribs to the pubis and compresses the abdomen |
| Quadriceps femoris | Muscle on the front of thigh that extends the legs |
| Which two muscles are supported by the Achilles tendon | Soleus and gastrocnemius |
| Biceps brachii | Muscle on upper arm that extends the lower arm |
| Circumduction | Moving a circle at a joint |
| Calcium ions | Attached to troponin and tropomyosin filaments in order to allow an actin-myosin "cross bridge" |
| Zygomaticus | Muscle closes, pursues, and protrudes the lips in a kissing action |
Created by:
erynfabro
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