Chapter 11 & 12 Muscular System
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Sarcomeres | The Smallest contractile unit of muscle; extends from one Z disc to the next
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| Neuromuscular junction | The region where a motor neuron comes into close contact with a skeletal muscle cell
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| Motor unit | a motor neuron and all the muscle cells it supplies.
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| Synaptic cleft | the fluid filled space at a synapse between neurons
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| Know the names of the 2 contractile proteins | Actin & Mycin
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| Know the 3 connective tissue coverings of skeletal muscles from the inside out | Endomysium, Perimysium and Epimysium
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| Know the different ways skeletal muscle is named | Location of origin, insertion, Location, Shape, Direction of muscle fibers, Size, Action & Number of Origin
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| Orbicularis Oris | Closes Mouth & protrudes lips
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| Sternocleidomastoid | Flex Neck forward/ Back & Rotates
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| Pectoralis Major | Adducts and Flexes ,Medially Rotates and Moves Arm/ Humerus
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| Rectus Abdominis | Flex’s Vertebral Column
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| Biceps Brachii | Flexes Elbow & Supinates forearm
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| Triceps Brachii | Powerful Arm Extender Antagonist of Biceps Brachii
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| Gluteus Maximus | Powerful Hips Extensor (Forceful)(Climbing Stairs)
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| Gastrocnemius | Planter Flexes Foot & Flexes Knee when in Dorsiflexed. Crosses Knee Joint
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| Know the 4 muscles that make up the quadriceps | Rectus Femoris, (3 Vastus Muscles) Vastus Lateralis, Vastus Medialis, Vastus Intermedius
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| Know the 3 muscles that make up the hamstring | Biceps Femoris, Semitendinosus & Semimembranosus
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