BIOS 256 comprehensive

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BIOS 256 comprehensive

• acetylcholine is

–Answer neurotransmitter than stimulates skeletal muscle

• during repolarization, ions are pumped out of the cell

–Answer potassium

• an elaborate and specialized network of membranes in skeletal muscle cells that function in

calcium storage is the –Answer sarcoplasmic reticulum

• the least movable point of muscle attachment to a bone is

–Answer origin

• a muscle group that works with and assists the action of a prime mover is

–Answer synergist

• muscle tissue is endowed with all of the following properties except

–Answer trans- missibility

• all of these are functions of muscle tissue except

–Answer -covers body surface -locomotion -heat protection -posture stability

• this type of muscle contains intercalated discs

–Answer 1 / 3

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cardiac muscle

• layer of connective tissue that surrounds the whole skeletal muscle is

–Answer - -epimysium -endomysium -perimysim

• An aponeurosis is

–Answer a connective tissue sheet

• the sarcoplasmic reticulum stores

–Answer calcium

• which of the following correctly defines a triad of the sarcomere?

–Answer -axon terminal, synaptic cleft, sarcolemma -T tubule and two adjacent terminal cisterns -actin, troponin, and tropomyosin

• the ability of the sarcolemma of muscle cells to conduct an impulse is an example of

–Answer -excitability -contractility

• a lever consists of

–Answer -tendon and muscle -rigid structure and fulcrum -bone, muscle, and nerve 2 / 3

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• which of the following are members of the hamstring group

–Answer -biceps -semitendinosus -semimembranosus

• muscles of the rotator cuff

–Answer -supraspinatus -infraspinatus -teres minor -subscapularis

• a single brief and quick cycle of contraction followed by relaxation is

–Answer mus- cle twitch

• Triggering of the muscle action potential occurs after

–Answer calcium ion binds to chemically-gated channels in the motor end plate

• muscles of quadriceps

–Answer -vastus lateralis -vastus medialis -vastus intermedius -rectus femoris

• triggering of the muscle action potential occurs after

–Answer -acetylcholine binds to chemically-gated channels in the motor end plate -calcium ions bind to channels on the motor end plate -the action potential jumps across the neuromuscular junction

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