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.
Citation: Pray, L. (2008) Sex-linked diseases: the case of Duchenne muscular dystrophy (DMD). Nature Education 1(1):132. Prenatal diagnostic testing can now determine whether a fetus carries a debilitating or fatal sex-linked mutation.
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.