Term
Muscular System:
-each ? is an organ that contains muscle tissue, connective tissue, nerves, and blood vessels. |
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Definition
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Term
Muscular System:
fibrous connective tissue that covers the body's more than 430 skeletal muscles. |
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Definition
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Term
Muscular System:
3 types of connective tissue |
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Definition
Epimysium
Perimysium
Endomysium |
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Term
Muscular System:
The outer layer of connective tissue |
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Definition
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Term
Muscular System:
connective tissue that surrounds each fasciculus, or group of fibers |
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Definition
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Term
Muscular System:
connective tissue that surrounds each individual fiber |
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Definition
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Term
| A ? consists of a motor neuron and the muscle fibers it innervates. |
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Definition
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Term
| Typically there are several hundered ? in a single motor unit. |
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Definition
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Term
| Thick filaments of skeletal muscle is known as? |
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Definition
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Term
| Thin filaments of skeletal muscle is known as? |
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Definition
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Term
| The discharge of an ? from a motor nerve signals the release of ? from the ? into the ?, causing tension development in muscle. |
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Definition
Action-potential
Calcium
Sarcoplasmic reticulum
Myofibril |
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Term
| The sliding-filament theory states that the actin filaments at each end of the sarcomere slide ? on myosin filaments, pulling the ? toward the center of the sarcomere and thus shortening the muscle fiber. |
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Definition
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Term
| 4 Phases of the Sliding-Filament Theory of Muscular Contraction |
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Definition
Resting Phase
Excitation-Contraction Coupling Phase
Contraction Phase
Recharge Phase
Relaxation Phase |
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Term
| slow twitch muscle fiber type is known as? |
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Definition
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Term
| proprioceptors that consist of several modified muscle fibers enclosed in a sheath of connective tissue. |
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Definition
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Term
| When a muscle is stretched, deformation of the ? activates the sensory neuron, which sends an impulse to the spinal cord, where it synapses with a motor neuron, causing the muscle to contract. |
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Definition
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Term
When a muscle is stretched, deformation of the muscle spindle activates the sensory neuron, which sends an impulse to the spinal cord, where it synapses with a motor neuron, causing the muscle to contract.
*activated by? |
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Definition
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Term
Proprioceptors located in tendons near the myotendinous junction.
They occur in series (i.e., attached end to end) with extrafusal muscle fibers. |
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Definition
| Golgi Tendon Organs (GTO) |
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Term
When an extremely heavy load is placed on the muscle, discharge of the ? occurs
The sensory neuron of the ? activates an inhibitory interneuron in the spinal cord, which in turn synapses with and inhibits a motor neuron serving the same muscle. |
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Definition
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Term
100 m spring
*Amount of Type I and Type II |
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Definition
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Term
800 m run
*Amount of Type I and Type II |
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Definition
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Marathon
*Amount of Type I and Type II |
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Definition
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Term
Oly Lifts
*Amount of Type I and Type II |
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Definition
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Term
Soccer, lacrosse, hockey
*Amount of Type I and Type II |
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Definition
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Term
Football wide receiver
*Amount of Type I and Type II |
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Definition
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Term
Football Lineman
*Amount of Type I and Type II |
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Definition
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Basketball
*Amount of Type I and Type II |
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Definition
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Term
Cycling
*Amount of Type I and Type II |
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Definition
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Term
Pitcher
*Amount of Type I and Type II |
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Definition
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Boxing
*Amount of Type I and Type II |
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Definition
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X country skiing
*Amount of Type I and Type II |
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Definition
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Tennis
*Amount of Type I and Type II |
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Definition
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Term
Characteristics of Muscle Fiber Types:
Size - Small
Speed - Slow
Fatigue resistance - High
Force production - Low
Endurance - High
Capillary density - High
Mitochondria size/density - High |
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Definition
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Term
Characteristics of Muscle Fiber Types:
Size - Large
Speed - Fast
Fatigue resistance - Int/Low
Force production - Int
Endurance - Int/Low
Capillary density - Int
Mitochondria size/density - Int |
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Definition
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Characteristics of Muscle Fiber Types:
Size - Large
Speed - Fast
Fatigue resistance - Low
Force production - High
Endurance - Low
Capillary density - Low
Mitochondria size/density - Low |
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Definition
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Term
| A muscle action in which the muscle shortens because the contractile force is greater than the resistive force. |
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Definition
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Term
| A muscle action in which the muscle lengthens because the contractile force is less than the resistive force. |
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Definition
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Term
| A muscle action in which the muscle length does not change because the contractile force is equal to the resistive force. |
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Definition
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Term
| The muscle most directly involved in bringing about a movement is called a prime mover or ? |
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Definition
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Term
| A muscle that can slow down or stop the movement is called the ? |
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Definition
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Term
| During throwing, the triceps acts as an ?, extending the elbow to accelerate the ball. |
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Definition
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Term
| During throwing, as the elbow approaches full extension, the biceps acts as an ? to slow down elbow extension and bring it to a stop, thereby protecting elbow structures from internal impact. |
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Definition
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Term
| The maximal force that a muscle or muscle group can generate at a specified velocity. |
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Definition
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Term
| The time rate of doing work where work is the product of the force exerted on an object and the distance the object moves in the direction in which the force is exerted. |
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Definition
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