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By the end of this section, you will be able to: Cardiac muscle tissue is only found in the heart. It is important to realise that cardiac hypertrophy is a completely different condition compared to myostatin-related muscle hypertrophy. Hint: Intercalated disks are double membranes that are undulating and are known to hold two cells together by desmosomes and connect them through gap junctions, thereby allowing the conduction of electrical impulse from one cell to the other. License:CC BY-NC-SA:Attribution-NonCommercial-ShareAlike, Exercise \(\PageIndex{1}\)B. There are gaps in the myelin covering of an axon. Regulate the inflammatory response to damage. Smooth muscle is non-striated and involuntary. This lack of oxygen leads to a condition called myocardial infarction, which represents the death of cardiac tissue. Hence, if intercalated discs are nit present in the cardiac muscles then they might not contract properly and thus blood would not be pumped efficiently to other organs. What is thought to influence the overproduction and pruning of synapses in the brain quizlet? ovements of our bones, joints, and skin (muscles of facial expression); m. contraction, such as movement of our limbs, trunk, external sphincters, and muscles of facial expression. The number of skeletal muscle fibers is set during development and stays relatively constant throughout life, as skeletal muscle fibers cannot divide to produce more fibers. The hearts oxygen supply is brought to the heart via the coronary arteries, which are highly susceptible to atheromas. It ensures the synchronized contraction of the cardiac tissue. Sensory information travels from the periphery to the CNS via a sensory neuron. Resistance exercise leads to an increased number of myofibrils in the muscle fibers. Smooth and cardiac muscles are under the control of the peripheral nervous system. The membranous network of sarcoplasmic reticulum is transversed by structures called T tubules, which are extensions of the sarcolemma (plasma membrane of muscle cells). What would be the drawback of cardiac contractions being the same duration as skeletal muscle contractions? Cardiac conducting cells are connected strictly via desmosomes and gap junctions only. Why are intercalated discs not in skeletal muscles - 650.org Sarcomeres are specific portions of myofibrils located between two Z lines and are responsible for the striated appearance of cardiac tissue. Cardiac muscle tissue is only found in the heart.