Cardiac Muscle Cells Are Connected by Special Junctions Called Intercalated

question 22

Multiple Choice

Cardiac muscle cells are connected by special junctions called intercalated discs.Intercalated discs provide strength between cells of tissues which exhibit high mechanical stress,strong flexible connections between tissue cells,and electrical excitability between the cells.Using this information,which junctions are present in intercalated discs?

• A)Tight,plasmodesmata,and adherens
• B)Tight,plasmodesmata,and desmosomes
• C)Gap,adherens,and desmosomes
• D)Gap,desmosomes,and hemidesmosomes
• E)Adherens,tight,and gap

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Definitions:

Sharing Electrons

A chemical bond process where two atoms share pairs of electrons to achieve a stable electron configuration.

Ionic Bond

A chemical bond formed between two ions with opposite charges, where one atom donates an electron to another, leading to an attraction between the ions.

Covalent Bond

A strong chemical bond where two atoms share a pair of electrons to achieve a fuller outer shell of electrons.

Hydrogen Bond

A weak chemical bond between an electronegative atom, like oxygen or nitrogen, and a hydrogen atom bound to another electronegative atom, contributing to the structure and properties of molecules.