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| what are the five physiological properties of muscles? |
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Definition
| Excitability, conductivity, conductivity,extensility, and elasticity |
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Definition
| The ability to respond to a stimulus -2 chemical such as neurotransmitters |
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Definition
| the ability to transmit a response (electrical signal) along the plasma membrane called the sarcolema |
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Definition
| the ability to shorten and generate foarce |
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Definition
| the ability to lengthen or stretch |
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Definition
| the ability to return to is original length after being stretched |
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Definition
| the outermost connection tissue of skeletal muscle |
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Definition
| Bundles of single muscle fibers (skeletal muscle, composed of hundreds of myofibrils |
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Definition
| Encloses each fascicle (Skeletal muscle) |
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Definition
| encloses each single muscle fiber |
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Definition
| Composed of repeating structures called sarcomeres. |
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Definition
| are functional units of muscle contraction. |
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Definition
| Contains both thick and thin myofillament |
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Definition
| Contains only thin myofillament |
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Definition
| Contains only thick myofillament |
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Term
| What is different about a contracted sarcomere from a relaxed one? |
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Definition
1)sarcomere shortens
2)z-line moves closer
3)decrease in width of I-band
4)width of I-band NOT CHANGE!
5)H-zone decreases |
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Term
| What is thick myofilament? |
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Definition
| Composed only of the protein MYOSIN. Each thick myofilament contains 300 myosin molecules. |
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Definition
2 heads
(adenosine diaphosphate) |
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Definition
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Definition
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Definition
| Function- in the absence of Ca2+ ions it covers up actin binding sites |
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Definition
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Term
| muscle cells plasma membrane called? |
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Definition
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Definition
continues with the sarcolema
-muscle cell membrane |
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Definition
| releases Ca2+ into cytosol |
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Definition
| 1)terminal cisternae + 2)T-tubules + 3)Terminal cisternae |
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Definition
| is a single motor neuron and all the muscle fibers it innervates. |
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Definition
| Number of muscle fibers in a motor unit |
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Term
| Whats the innervation ratio of extrinsic eye muscle: Rectus,medial (rectus=moves eyeball)? |
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Definition
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Term
| Thenar muscles :move thumbs innervation ratio? |
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Definition
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Term
| Gastrollemious (Quadracepts)innervation ratio? |
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Definition
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Definition
Phosphagen
used within 30 seconds of excercise |
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Definition
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Definition
uses glycogen and fat
-can be used "indefinitely" |
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Definition
Ensures the concentration of k+ in cytosol, and concentration of k+,in cytosol and concentration of k+ in cytosol and concentration of Na+ in tre exttracellular fluid remain about constant
-Pump uses a lot of atp, and accounts for 70% of the energy (atp) consumed by nervous system
-Brain receives 15% of cardiac pump= volume of blood pumped by heart/min although the brain is only 2.5% of body weight |
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Term
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Definition
Cardiac output= volume of blood by heart per min = LITERS/MINUTE AT REST
CORINARY BLOOD FLOW= 250ML/MIN
250ml/5000ml*100%=5% of CO |
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Term
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Definition
| ejection/ contraction phase |
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Term
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Definition
| Relaxation/ filling phase |
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