객관식
Which type of muscle tissue is both voluntary and striated?
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4. Tissues & Histology
Types of Muscle Tissue
객관식
Which type of muscle tissue contains intercalated discs that help electrically and mechanically couple adjacent cells?
A
Cardiac muscle
B
Skeletal muscle
C
Dense regular connective tissue
D
Smooth muscle
검증된 단계별 안내1
Step 1: Understand the types of muscle tissue: skeletal, cardiac, and smooth muscle, each with distinct structural and functional characteristics.
Step 2: Recall that intercalated discs are specialized structures found only in cardiac muscle tissue, which facilitate both electrical and mechanical coupling between adjacent cells.
Step 3: Recognize that skeletal muscle lacks intercalated discs and is characterized by multinucleated fibers with voluntary control, while smooth muscle also lacks intercalated discs and is involuntary with spindle-shaped cells.
Step 4: Note that dense regular connective tissue is not a muscle tissue but a type of connective tissue, so it does not contain intercalated discs.
Step 5: Conclude that the presence of intercalated discs is a defining feature of cardiac muscle, enabling synchronized contraction of the heart muscle.
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