The contraction produced can be described as a twitch, summation, or tetanus, depending on the frequency of action potentials. In skeletal muscles, muscle tension is at its greatest when the muscle is stretched to an intermediate length as described by the length-tension relationship. Smooth and cardiac muscle contractions are myogenic and can be modulated by the autonomic nervous system.
sex-linked disorder - any disease or abnormality that is determined by the sex hormones; hemophilia is determined by a gene defect on an X chromosome. bleeder's disease, haemophilia, hemophilia - congenital tendency to uncontrolled bleeding; usually affects males and is transmitted from mother to son.
The non-sex chromosomes 1..22 are called autosomes and the resulting conditions called autosomal genetic diseases. (For comparison, the other conditions affecting the sex chromsomes X and Y are called x-linked genetic diseases .).Recessive diseases are diseases where both copies of a gene must be damaged or mutated.esearch the causes of these diseases that are similar to, or related to, Autosomal Recessive Genetic Diseases: 1  Spinal muscular dystrophy. 2  Niemann Pick disease.