why do you think that Antonio is presented as a melancholy character what could be cause for his melancholy
Answers
Skeletal muscles are voluntary muscles; a person has complete control of their movement. Cardiac muscles, on the other hand, are involuntary muscles; the muscles contract and relax subconsciously.
The nerve supply for skeletal muscles originates from the central nervous system. This explains why skeletal muscles are voluntary. Cardiac muscles are supplied by the brain and autonomic nervous system, explaining the involuntary control of said muscles.
Skeletal muscles are distributed throughout the body; they are attached to bone via tendons like biceps, triceps, quadriceps and hamstrings. Attachment can also be achieved via aponeurosis (a sheet of pearly white fibrous tissue which takes the place of a tendon in sheet-like muscles having a wide area of attachment) like in the case of abdominal muscles. Cardiac muscles, on the other hand, are exclusively located along the walls of the heart.
Skeletal muscles are important in body movement like sitting, walking, and lifting. Cardiac muscles function solely for pumping blood away from the heart towards the lungs and throughout the body.
Skeletal muscles can contract rapidly but get tired easily. On the other hand, cardiac muscles can also contract rapidly but never get tired.
Skeletal muscles have no branches, unlike cardiac muscles that have branches.
The cells of skeletal muscles can have one or more nucleus per muscle fiber. In cardiac muscle cells there is one nucleus per fiber
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