객관식
What is the type of membrane junction that prevents material from moving between cells?
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2. Cell Chemistry & Cell Components
Cell Junctions
객관식
In the context of cell junctions, which muscle cell type characteristically has both desmosomes and gap junctions at intercalated discs?
A
Smooth muscle cells
B
Skeletal muscle fibers
C
Myofibroblasts
D
Cardiac muscle cells
검증된 단계별 안내1
Step 1: Understand the types of muscle cells: smooth muscle cells, skeletal muscle fibers, cardiac muscle cells, and myofibroblasts, and their structural characteristics.
Step 2: Review the function and structure of intercalated discs, which are specialized connections between certain muscle cells that facilitate mechanical and electrical coupling.
Step 3: Identify the types of cell junctions found in intercalated discs: desmosomes, which provide strong mechanical adhesion, and gap junctions, which allow electrical communication between cells.
Step 4: Recognize that cardiac muscle cells uniquely possess intercalated discs containing both desmosomes and gap junctions to coordinate heart contractions efficiently.
Step 5: Conclude that among the options, cardiac muscle cells are the muscle cell type that characteristically have both desmosomes and gap junctions at intercalated discs.
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