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Long Answer:Skeletal Muscle Hierarchy:Muscle Organ
Perimysium = white fibrous connective tissue & areolar connective tissue that surrounds each fascicle
Fascicle = bundle of skeletal muscle fibers
Endomysium = areolar connective tissue that surrounds each muscle fiber
Muscle Fiber ( Myofiber) = a muscle cell
Myofibrils = contractile protein organelles
Myofilaments = contractile proteins composed of:
thick filaments = made of myosin
thin filaments = made of actin
What else can I help you with?
Each muscle fiber is also called a?
Each muscle fiber is also called a myofiber.
What is one of the functional units of a myofibril?
sarcomere
What are the key differences between a myotube and a myofiber in muscle physiology?
A myotube is an immature muscle cell that forms during muscle development, while a myofiber is a mature muscle cell that is fully developed and functional. Myotubes eventually fuse together to form myofibers, which are the main contractile units of skeletal muscle. Myofibers are larger and more specialized than myotubes, with multiple nuclei and a well-defined structure for efficient muscle contraction.
What is the difference between a myofibril and a myocyte in muscle structure and function?
A myofibril is a thread-like structure within a muscle cell that contains the proteins responsible for muscle contraction. A myocyte, on the other hand, is the actual muscle cell that contains multiple myofibrils. In summary, myofibrils are the components within a myocyte that enable muscle contraction.
What is the specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction?
The specific structure within a muscle cell that contains the sarcomere I band and is responsible for muscle contraction is called the myofibril.
What is the order from largest to smallest myofibril fascicle myofiber myofilament?
myofilament myofibril myofiber fascicle muscle
What is the Smaller fiber in a muscle fiber?
Myofibril
What is the term for a Smaller fiber in a muscle fiber?
The smaller fiber in a muscle fiber is called a myofibril. A band of tissue that connects bone to bone is called a ligament.
Why are myofibers polynucleated?
They're made from many of precursor cells fusing to form a myofiber cell, and each of these precursor cells has their own nucleus which are retained in the specalised myofiber cell.
What is the smallest contractile unit of the muscle fiber?
sarcomere
What another name for myocyte?
Myofibril
Myofibrils consist of contractile proteins called?
Myofilaments Two types: actin (thin filament) & myosin (thick filament)
What is the fine subunit of muscle fiber?
myofibril
What is the basic functional unit of a myofibril?
sarcomere
What area of a myofibril is there no actin filaments?
H band
What is a myofibril?
A myofibril is a bundle of contractile filaments (myofilaments), 1-2 μm in diameter, that are arranged in parallel groups in the cytoplasm of striated muscle cells.
Each muscle fiber is also called a?
Each muscle fiber is also called a myofiber.
