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Physical Education - Microscopic muscle structure
Microscopic muscle structure
Microscopic muscle structure
Muscles are made up of the following components (from largest to
smallest):
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* - a group of muscle fibres that are surrounded by connective tissue
* - the name given to the connective tissue that surrounds the fasciculi
* - encases the muscle to hold everything together. As it nears the end
of the muscle it thickens to eventually become the tendon
* Myofibrils [1] - muscle fibres are made up of myofibrils and are
similar to the many wires that make up a cable
* Sarcomere [2] - myofibrils have many units known as sarcomeres. These
are arranged end to end for the entire length of the fibre
* Z lines [3] - These lines mark where one sarcomere starts and another
finishes.
* - Myofibrils [4] can be further divided into myofilaments. There are
two types of myofilaments - actin [5] (thin filaments) and myosin [6]
(thick filaments)
* - the cell membrane [7] that surrounds the muscle fibre
* contains the following:
* Mitochondria [8]
* Myoglobin
* Fat, glycogen, ATP, PC
* Enzymes
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What are some different microscopic muscle structures?
Microscopic muscle structure:- Muscles are made up of the following components (from largest to smallest): Muscle belly Fasciculi - a group of muscle fibres that are surrounded by connective tissue Perimysium - the name given to the connective tissue that surrounds the fasciculi Epimysium - encases the muscle to hold everything together. As it nears the end of the muscle it thickens to eventually become the tendon Myofibrils - muscle fibres are made up of myofibrils and are similar to the many wires that make up a cable Sarcomere - myofibrils have many units known as sarcomeres. These are arranged end to end for the entire length of the fibre Z lines - These lines mark where one sarcomere starts and another finishes. Myofilaments - Myofibrils can be further divided into myofilaments. There are two types of myofilaments - actin (thin filaments) and myosin (thick filaments) Sarcolemma - the cell membrane that surrounds the muscle fibre Sarcoplasm contains the following: Mitochondria Myoglobin Fat, glycogen, ATP, PC Enzymes
Explain the structure of microscopic muscles.