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A&P Ch 8 -muscle
Muscular chapter
| Question | Answer |
|---|---|
| Layers of connective tissue that separates individual. Uscles and hold it in position. | Fascia |
| Broad connective sheets that attach muscle to bone | Aponeuroses |
| Thick filaments | Myosin |
| Thin filaments | Actin |
| Repeating units within a muscle fiber | Sarcomeres |
| Neurons that control skeletal muscles | Motor neurons |
| Chemical released from neurons | Neurotransmitter |
| Neurotransmitter released during a muscle contraction | Acetylcholine |
| Muscle fiber that connects to the motor neuron | Motor end plate |
| Motor neuron + muscle fiber | Motor unit |
| Alternative source of ATP for a muscle cell | Creatine phosphate |
| Molecule that carries oxygen in the blood | Hemoglobin |
| Molecule that stores oxygen in the muscle cell | Myoglobin |
| Amount of oxygen that is required to convert lactic acid into glucose + restore ATP and creative phosphate levels | Oxygen debt |
| A muscles inability to contract | Fatigue |
| Amount of Ach that is required In order to initiate a muscle contraction | Threshhold stimulus |
| Combination of the forces do individual twitches | Summation |
| Sustained contraction without relaxation | Tetanic contraction |
| The stimulation of more motor neurons as the intensity increases | Recruitment |
| Tupe of muscle that moves the skeletal system | Skeletal muscle |
| Type of muscle that controls internal organs | Smooth muscle |
| Type of muscle that makes up the heart | Cardiac muscle |
| Wavelike motion found in smooth muscle | Peristalsis |
| Immovable end of the muscle | Origin |
| Movable end of the muscle | Insertion |
| Prime mover | Agonist |
| Muscles that assist the prime mover | Synergists |
| Resist a prime mover | Antagonists |