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Janssen Muscles
Mrs. Janssen's Muscular System Test
| Question | Answer |
|---|---|
| What is the major function of muscle? | contraction |
| What is responsible for the banding pattern seen in skeletal muscle cells? | myofilament arrangement |
| How many types of muscle tissue are there? | 3 |
| How many layers of abdominal muscles are there? | 4 |
| Which type of muscle is the only one that is voluntary? | skeletal |
| What type of tissue connects bone to bone? | ligament |
| What type of tissue connects muscle to bone? | tendon |
| What is the sheetlike membrane that covers a muscle called? | aponeuroses |
| What type of muscle contraction keeps the tension the same, but shortens the muscle? | isotonic |
| What type of muscle contraction increases the tension, but does not shorten the muscle? | isometric |
| What is an overcoat of connective tissue called? | epimysium |
| What is a bundle of fibers called? | fascicle |
| What is the delicate sheath around a single muscle fiber called? | endomysium |
| What is the name of the fibrous membrane around several sheathed muscle fibers? | perimysium |
| What is the name of a strong cord-like connective tissue? | tendon |
| What is sheetlike connective tissue called? | aponeuroses |
| What is the plasma membrane of muscles? | sarcolemma |
| What are ribbon-like organelles that fill the cytoplasm of muscle cells? | myofibrils |
| What are chains of tiny contractile units? | sarcomeres |
| What are thread-like strands of proteins in muscle cells called? | myofilaments |
| What is a contractile protein called? | actin |
| What is another name for myosin heads? | cross bridges |
| What is the ability to receive & respond to a stimulus called? | irritability |
| What is the ability to shorten when stimulated called? | contractility |
| Which type of muscle is striated, voluntary muscle tissue? | skeletal |
| Which type of muscle is nonstriated, involuntary muscle tissue? | smooth |
| Which type of muscle is striated, involuntary muscle tissue? | cardiac |
| What is the name of one neuron & all muscle cells it stimulates? | motor unit |
| What is the junction between the neuron & the muscle called? | neuromuscular junction |
| What is the gap between the nerve ending & muscle cell called? | synaptic cleft |
| What is a chemical that can stimulate muscle cells? | neurotransmitter |
| What is the neurotransmitter that stimulates skeletal muscles? | acetylcholine |
| What is the electric current in muscle cells called? | action potential |
| What is the name of the different degrees of muscle fibers shortening? | graded response |
| What is a single, brief, jerky contraction of a muscle called? | twitch |
| What is a completely smooth and sustained muscle contraction called? | tetanus |
| What is it called when a muscle is unable to contract? | muscle fatigue |
| What chemical causes muscle cramps? | lactic acid |
| What causes muscle fatigue? | oxygen debt |
| What kind of contraction shortens the muscle? | isotonic |
| What kind of contraction does not shorten the muscle? | isometric |
| What is a state of partial, continuous contraction called? | muscle tone |
| What is the part of the muscle that is attached to the immovable bone called? | origin |
| What is the part of the muscle that is attached to the movable bone called? | insertion |
| What is a muscle that has a major responsibility for a movement called? | prime mover |
| What is a muscle that opposes or reverses a movement called? | antagonist |
| What are the muscles that help prime movers called? | synergists |
| What are muscles that hold a bone still or stabilize prime movers called? | fixators |
Created by:
jjanssen33
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