Scelta multipla
Which type of cell junctions must be present between cells to form a barrier?
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2. Cell Chemistry & Cell Components
Cell Junctions
Scelta multipla
What is the primary function of intercalated discs in cardiac muscle tissue?
A
To generate ATP for muscle energy
B
To store calcium ions for muscle contraction
C
To facilitate the rapid transmission of electrical impulses between cardiac cells
D
To provide a smooth surface for muscle contraction
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Understand that cardiac muscle tissue is specialized for the heart's function, requiring efficient and coordinated contractions.
Recognize that intercalated discs are unique structural features found in cardiac muscle cells, also known as cardiomyocytes.
Intercalated discs contain gap junctions and desmosomes. Gap junctions allow ions and electrical impulses to pass quickly between cells, facilitating synchronized heart contractions.
Desmosomes within intercalated discs provide strong adhesion between cardiac cells, ensuring structural integrity during the forceful contractions of the heart.
Conclude that the primary function of intercalated discs is to facilitate the rapid transmission of electrical impulses between cardiac cells, ensuring efficient and coordinated heartbeats.
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