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Cardiac Muscle — Muscle & Nervous Tissue

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Histology Question Bank

Cardiac Muscle

Muscle & Nervous Tissue · Cardiac Muscle · medium

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Cardiac Muscle MCQs: practice questions

Sample Cardiac Muscle multiple-choice questions from Muscle & Nervous Tissue.

A cardiomyocyte is damaged but neighboring cells remain electrically connected. Which structure most directly preserves this coupling?
- A. Desmosomes only
- B. Gap junctions
- C. Tight junctions
- D. Basal lamina
- E. Perimysium
Which intercalated-disc component is especially associated with anchoring actin filaments?
- A. Gap junction
- B. Tight junction
- C. Fascia adherens
- D. Hemidesmosome
- E. Peroxisome
Which feature is particularly prominent at the poles of cardiac myocyte nuclei?
- A. Perichondrium
- B. Golgi apparatus
- C. Osteons
- D. Myelin
- E. Keratin bundles
Which cell junction is most directly responsible for sealing the space between cells?
- A. Tight junction
- B. Gap junction
- C. Desmosome
- D. Fascia adherens
- E. Hemidesmosome
Which feature of cardiac muscle helps it resist fatigue?
- A. High mitochondrial density
- B. Absence of oxidative enzymes
- C. Low capillary density
- D. No myoglobin
- E. Few mitochondria
Which junction permits direct electrical communication between cardiac myocytes?
Cardiac muscle contraction is coordinated partly because adjacent myocytes are connected by:
Which combination is most characteristic of cardiac muscle?
Which statement about cardiac muscle regeneration is most accurate?
Cardiac muscle fibers are described histologically as:
Compared with skeletal muscle, cardiac muscle typically has:
Which histologic feature would be expected in cardiac muscle but not typical skeletal muscle?
Which feature allows cardiac muscle to function as a coordinated contractile unit?
Which structure is analogous to the sarcoplasmic reticulum of skeletal muscle?
A cardiac biopsy shows a centrally located nucleus and cross-striations. Which diagnosis is most likely?
Which structure carries depolarization into the interior of a cardiac myocyte?
Which feature helps distinguish cardiac from smooth muscle under light microscopy?
Which connective tissue compartment surrounds individual cardiac muscle cells?
What is the main function of intercalated discs?
Cardiac muscle generally has which relationship between T tubules and terminal cisternae?
Which feature best distinguishes cardiac muscle from skeletal muscle histologically?
A patient has myocardial injury. Why is functional recovery limited compared with skeletal muscle injury?
Typical cardiac myocytes usually contain:
Which feature of cardiac muscle supports continuous aerobic metabolism?
Which junction in an intercalated disc provides strong mechanical attachment between cardiac myocytes?

Cardiac Muscle — Muscle & Nervous Tissue

Cardiac Muscle MCQs: practice questions

A cardiomyocyte is damaged but neighboring cells remain electrically connected. Which structure most directly preserves this coupling?

Which intercalated-disc component is especially associated with anchoring actin filaments?

Which feature is particularly prominent at the poles of cardiac myocyte nuclei?

Which cell junction is most directly responsible for sealing the space between cells?

Which feature of cardiac muscle helps it resist fatigue?

Which junction permits direct electrical communication between cardiac myocytes?

Cardiac muscle contraction is coordinated partly because adjacent myocytes are connected by:

Which combination is most characteristic of cardiac muscle?

Which statement about cardiac muscle regeneration is most accurate?

Cardiac muscle fibers are described histologically as:

Compared with skeletal muscle, cardiac muscle typically has:

Which histologic feature would be expected in cardiac muscle but not typical skeletal muscle?

Which feature allows cardiac muscle to function as a coordinated contractile unit?

Which structure is analogous to the sarcoplasmic reticulum of skeletal muscle?

A cardiac biopsy shows a centrally located nucleus and cross-striations. Which diagnosis is most likely?

Which structure carries depolarization into the interior of a cardiac myocyte?

Which feature helps distinguish cardiac from smooth muscle under light microscopy?

Which connective tissue compartment surrounds individual cardiac muscle cells?

What is the main function of intercalated discs?

Cardiac muscle generally has which relationship between T tubules and terminal cisternae?

Which feature best distinguishes cardiac muscle from skeletal muscle histologically?

A patient has myocardial injury. Why is functional recovery limited compared with skeletal muscle injury?

Typical cardiac myocytes usually contain:

Which feature of cardiac muscle supports continuous aerobic metabolism?

Which junction in an intercalated disc provides strong mechanical attachment between cardiac myocytes?