Histology · NEET PG Preparation Anatomy
A researcher is studying the ultra-structure of cardiac muscle in comparison to skeletal muscle. Which specialized junctional complex is uniquely fou…
Practice question from Histology (NEET PG Preparation Anatomy), with the correct answer and a step-by-step solution.
hard · MCQ · Q-29A54E
A researcher is studying the ultra-structure of cardiac muscle in comparison to skeletal muscle. Which specialized junctional complex is uniquely found exclusively at the Z-lines of cardiac muscle intercalated discs, providing strong mechanical attachment between adjacent cells?
- A.Fascia adherensCorrect answer
- B.Tight junction (Zonula occludens)
- C.Gap junction (Nexus)
- D.Hemidesmosome
Solution
Intercalated discs contain transverse components (desmosomes and fascia adherens) and longitudinal components (gap junctions). Fascia adherens acts as an anchoring site for actin filaments and is located at the transverse segments, corresponding to the Z-lines.
More from Histology
- A 45-year-old man undergoes a diagnostic kidney biopsy. Light microscopy of the renal cortex reveals simple cuboidal epithelium lining the…
- During a routine histology lab, a medical student is examining a slide of the trachea. Which type of epithelium primarily lines the mucosa…
- In a bone histology slide, concentric lamellae of bone matrix are arranged around a central neurovascular canal. What is the anatomical ter…
- While examining a section of the small intestine under the microscope, a student notes numerous crypts of Lieberkühn. Which specialized exo…
Practise more Anatomy
Sign up free for adaptive practice on this chapter, with instant feedback and hints on every question.
Start practising freeFree to start · No credit card needed