Term
| What type of muscle is striated and multinucleated? |
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Definition
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Term
| What type of muscle is striated and has one central nucleus? |
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Definition
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Term
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Definition
| thick fascia that connects two muscle bellies |
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Term
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Definition
| plasma membrane found under the endomysium of an individual skeletal muscle fiber. |
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Term
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Definition
| elongated contractile threads found in striated muscle cells |
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Term
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Definition
| specialized smooth ER that regulates the concentration of calcium ions in the cytoplasm of striated muscle cells |
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Term
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Definition
| where nerve impulses are passed from neuron to neuron |
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Term
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Definition
| cytoplasm of muscle cells |
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Term
| Myofibrils are composed of what two types of filaments |
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Definition
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Term
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Definition
| Myosin that looks like golf clubs bound together |
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Term
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Definition
| actin that looks like a stand of pearls |
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Term
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Definition
| Thin dark protein band where actin filaments are attached |
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Term
| What are troponin and tropomyosin? |
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Definition
| regulatory proteins that bond to thin filaments at the binding sites |
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Term
| How does the sliding filament theory work? |
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Definition
| The myosin pulls on the actin filament thus shortening the sarcomere |
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Term
| What neurotransmitter activates when we think about moving our muscles? |
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Definition
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Term
| What is the muscle cell membrane called? |
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Definition
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Term
| How much body weight does muscle take up |
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Definition
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Term
| What is the latent period in tension of the muscle? |
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Definition
| brief delay as the AP sweeps over the sarcolemma and calcium ions are released from the sarcoplasmic reticulum |
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Term
| What is the contraction period in muscle tension? |
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Definition
| when the fiber is actively contracting |
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Term
| What is the refractory period in muscle tension? |
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Definition
| temporary loss of excitability where all muscle fibers in a motor unit will not respond to a stimulus |
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Term
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Definition
| involuntary, painful muscle contractions |
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Term
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Definition
| Dehydration, overuse/injury, abnormal blood electrolyte levels |
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Term
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Definition
| sudden involuntary contractions of a single muscle of a muscle group and is usually painless |
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Term
| What is the main muscle of mastication? |
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Definition
Masseter
Origin: Maxilla and Zygomatic Arch
Insertion: mandible |
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Term
| What is the origin in terms of muscle attachment? |
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Definition
| point of attachment that does not move when muscle contracts |
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Term
| What is the insertion in terms of muscle attachment? |
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Definition
| point of attachment that moves |
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Term
| What are the muscles of the pelvic floor? |
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Definition
referred to as perineum
levator ani and coccygeus |
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Term
| What are the muscles of the quadricep group? |
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Definition
Rectus femoris
vastus intermedius
vastus medialis
vastus intermedius |
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Term
| What are the muscles of the hamstring group? |
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Definition
Bicceps femoris
Semitendinosus
Semimembranosus |
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