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Which fascicles run with the long axis of the muscle?
Parallel
How are the muscle cells arranged with respect to one another?
Muscle fibers are grouped into fascicles, these fascicles form a muscle. The fascicles are arranged in 3 basic patterns. Parallel fascicles are arranged length wise in a parallel form. Circular fascicles are arranged in rings in a concentric pattern. Pennate fascicles are arranged in a feather pattern, with muscles arranged like a feather attached to a tendon along its length.
What is the structure of muscles?
The muscle cells are long and multinucleated. They are wrapped by endomysium. Clear striations can be seen. The muscle fibres are grouped together to form a fasicle. The fascicles are surrounded by perimysium. The fasciles then form a muscle bundle which is covered by the epimysium. The muscle bundles are grouped one or more similar functionis. A deep fascia separates different groups.
What causes skeletal and cardiac muscles to appear striated?
The myofibres cause skeletal and cardiac muscles to appear striated because they are cyndrical and long, extending across the entire surface of the muscle.
What are skeletal muscles composed of?
Humans (and animals) have three types of muscles. Our cardiac muscles makes up the heart and allows it to beat, our skeletal muscles are attached to various bones in the body and by contracting and relaxing allow us to move, our smooth muscle is found in internal organs such as along the digestive tract and works involuntarily.
What is discrete bundle of skeletal muscle cells muscle fibers?
A discrete bundle of skeletal muscle cells, known as a fascicle, is a group of muscle fibers encased in a connective tissue sheath called the perimysium. Muscle fibers within a fascicle are long, cylindrical cells that contract to produce movement. Fascicles are organized within a skeletal muscle, which is surrounded by another layer of connective tissue called the epimysium. This organization allows for coordinated contraction and efficient force generation during muscle activity.
Describe the microscopic anatomy of a muscle fiber?
Skeletal muscle fibers are composed of thousands of fibers, each with a covering of loose connective tissue-endomysium. The fibers are organized in parallel bundles called fascicles. Each fascicle is surrounded by a perimysium sheath; the presence of collagen bundles suggests dense connective tissue. Multiple fascicles are encased in a dense connective tissue-epimysium, which covers the entire muscle organ. Blood vessels and nerve fibers penetrate to the endomysium to supply the muscle fibers.
What is the name of a muscle when it is long and flat?
A long flat muscle is characterized as a flat muscle.
How does the muscle fiber affect the tenderness of meat?
The size of muscle fibres affect the tenderness of meat ; slender , small fibres are associated with tender meat ; large long fibres are associated with tougher meat.
Why does the muscle cell have a long shape?
The cell is long because the , muscle needs to stretch and contract when you use that muscle. Therefore it needs to be long in order to stretch.
What is a muscle that is not used for long periods and it wastes away?
A muscle that is not used for long periods of time and it wastes away is called an atrophied muscle.
What is the fibula's job?
The only real function of the fubula, the small long bone in the leg, is a site for muscle attachments. It does not provide any real support for the body.
