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Sports Con Voc 2
| Question | Answer |
|---|---|
| a body weight greater than what is considered normal standards; a body mass index of 25 to 29.9. | Overweight |
| a type of muscle tissue that connects to bones and generates the forces that create movement. | Skeletal muscle |
| Connective tissue that surrounds muscles and bones. | Fascia |
| Inner layer of fascia that directly surrounds an entire muscle and is referred to as “deep fascia.” | Epimysium |
| Connective tissue surrounding a muscle fascicle | Perimysium |
| Connective tissue that wraps around individual muscle fibers within a fascicle. | Endomysium |
| the contractile component of a muscle cell | Myofibril |
| glucose that is deposited and stored in bodily tissues, such as the liver and muscle cells | Glycogen |
| protein-based molecule that carries oxygen molecules into the muscles. | Myoglobin |
| The thin, stringlike myofilament that acts along with myosin to produce muscular contraction. | Actin |
| the thick myofilament that acts along with actin to produce muscular contraction. | Myosin |
| the structural unit of a myofibril composed of actin and myosin filaments between two Z-lines, or the smallest contractile unit of skeletal muscle. | Sarcomere |
| a motor neuron and all of the muscle fibers that it innervates. | Motor unit |
| nerve impulse that is relayed from the central nervous system, through the peripheral nervous system, and into the muscle across the neuromuscular junction. | Action potential |
| the specialized site where the nervous system communicates directly with muscle fibers. | Neuromuscular junction |
| chemical messengers that cross the synapse between neuron and muscle and assist with nerve transmission. | Neurotransmitters |
| a neurotransmitter that helps the action potential cross the synapse into the muscle, which initiates the steps in a muscle contraction. | Acetylcholine |
| the series of steps in muscle contraction involving how myosin (thick) and actin (thin) filaments slide past one another to produce a muscle contraction, shortening the entire length of the sarcomere. | Sliding filament theory |
| a high-energy molecule that serves as the main form of energy in the human body; known as the energy currency of the body. | Adenosine triphosphate (ATP) |
| largest bundles of fibers within a muscle. Fascicles are surrounded by perimysium. | Fascicles |
| the nervous system’s signal that tells a muscle to contract. | Neural activation |
Created by:
adelcamp