How does the structure of cardiac muscle it perform its function?
its spindle-shaped cells allow it to do smooth movements.
its striations allow for big movements.
its discs allow it to coordinate movement with other cells.
its multinucleated cells allow it to trigger involuntary actions

The structure of cardiac muscles help it perform its function as they have striations that allow for big movements.

Further Explanation:Muscles are important in living organisms such as humans, as they help in various functions which includes, support, movement, digestion, etc.There are three types of muscles in human body; cardiac muscles, smooth muscles and skeletal muscles.Cardiac musclesThese are types of muscles that are only found in the heart.They are involuntary muscles whose function is to enhance pumping of blood by the heart through the body.Cardiac muscles contract on their own without external stimulation.They are short, branched, striated and have a single central nucleus. Cardiac muscles contain intercalated discs which are small connections whose functions is to join cardiac muscles to each other.They also have gap junctions that are part of the intercalated discs whose function is to transfer stimulation to the next cardiac cell after stimulation of cardiac muscle.Additionally, the intercalated discs contain desmosomes whose function is to hold cardiac muscles together during contraction.Skeletal musclesThese are muscles that attach to bones and around exit and entry sites of the body.They have long cylindrical fiber, they are striated and also have many nuclei that are located at the periphery.They are voluntary muscles whose function is to enhance movement, produce heat and also protect organs.Smooth musclesSmooth muscles are type of muscles that are found along the walls of major organs and passageways such as G.I tract. They have no striations and have a single nucleus.They are involuntary muscles.They allow involuntary movement of food, regulates flow of blood in arteries through contraction, and also allow involuntary control of respiration among other functions.

Keywords: Muscles, types of muscles, cardiac muscles, skeletal muscles, smooth muscles.

Learn more about:Types of muscular tissue: Cardiac muscles: Skeletal muscles: Smooth muscles:

Level: High school

Subject: Biology

Topic: Support and movement

Sub-topic: Types of muscles