Describe the unique structural and metabolic characteristics of cardiac muscle explain the nature and functional significance of the intercellular junctions between cardiac muscle cells describe the heart's pacemaker and internal electrical conduction system. Structure of cardiac and smooth muscle although it is striated, cardiac muscle differs from skeletal muscle in that it is highly branched with cells connected by overlapping projections of the sarcolemma called intercalated discs.
Exam 3 10-8 cardiac muscle tissue study guide by rot3 includes 11 questions covering vocabulary, terms and more quizlet flashcards, activities and games help you improve your grades. Cardiac muscle (also called heart muscle or myocardium) is one of three types of vertebrate muscles, with the other two being skeletal and smooth muscles it is an involuntary, striated muscle that constitutes the main tissue of the walls of the heart.
Cardiac muscle characteristics a muscle type found only in the wall of the heart, studying the characteristics of the cardiac muscle is very interesting the unique nature of the muscle lies in the fact that it is present only in the heart, not in any other part of the body it is involuntary in function cardiac muscle structure. Cardiac muscles are made of a branched network of cardiac muscle fibres each cardiac muscle fibre or myofibril is uninucleate & striated showing alternate light & dark bands when viewed under an electron microscope. 11 overview of anatomy and physiology 3 12 structural organization of the human body 4 figure 1 cardiac muscle tissue cardiac muscle tissue is only found in the heart another feature of cardiac muscle is its relatively long action potentials in its fibers, having a sustained depolarization “plateau”. However, cardiac muscle has a unique structure, and differs in the way that contraction is initiated and regulated structure under the microscope, cardiac muscle is seen to consist of interlacing bundles of cardiac myocytes (muscle cells. But cardiac muscles are branching, striated, have usually uni-nucleated cells that interdigitate at the junctions (intercalated discs) 32 describe the unique anatomical features of cardiac muscle.
Describe the unique anatomical features of cardiac muscle the cardiac cells are arranged in spirals or figure - 8 bundles what role does the unique structure of cardiac muscle play in its function. Cardiac muscle characteristics a muscle type found only in the wall of the heart, studying the characteristics of the cardiac muscle is very interesting its cells share some features with that of the skeletal muscle and smooth muscle. Cardiac muscles are made of a branched network of cardiac muscle fibres each cardiac muscle fibre or myofibril is uninucleate & striated showing alternate light & dark bands when viewed under an electron microscope the dark bands are formed by a.
Structure of cardiac and smooth muscle a muscle fiber (cell) has special terminology and distinguishing characteristics: due to its irregular arrangement of actin and myosin filaments, smooth muscle does not have the striated appearance of skeletal muscle quiz: structure of skeletal muscle muscle contraction types of muscles. The passage of signals from cell to cell allows cardiac muscle tissue to contract very quickly in a wave-like pattern to effectively pump blood throughout the body another feature that is unique to cardiac muscle tissue is autorhythmicity cardiac muscle tissue is able to set its own contraction rhythm due to the presence of pacemaker cells that stimulate the other cardiac muscle cells.
Describe the unique anatomical features of cardiac muscle what role does the unique structure of cardiac muscle play in its function the unique feature is the intercalated discs. Four properties of cardiac cells cardiac muscle cells are present in the form of branches and act as one unit, forming a “functional syncytium” all cardiac cells contract at a time to help heart pump the blood the heart’s pumping ability is determined by the strength with which the cardiac cells contract. Like smooth muscles, cardiac muscles can remain in contraction for a sustained period like skeletal muscles, cardiac muscles also contract quickly the formation of contractile proteins in cardiac muscle cells also allows for stronger contractions when the fibers are stretched, which makes the heart pump more efficiently.