Muscle tissue

Question 1

Smooth muscle cell

Answer 1

• spindle-shaped
• 1 elongated nucleus
• cytoplasm eosinophilic
• small cells

Question 2

Skeletal muscle cell

Answer 2

• long, cylindrical multinucleate cell
• oval nuclei at periphery
• cytoplasm called sarcoplasm
• cell membrane ⇒ sarcolemma
• dark band⇒ A band
• light band ⇒ I band
• dark band in light band ⇒ Z line
• perimysium ⇒ CT around fascicle
• epimysium ⇒ dense CT around several fascicles
• endomysium⇒ reticular fibers around individual fibers

Question 3

Cardiac muscle cell

Answer 3

• mono-nucleated in center
• intercalated disc (Eberth’s line)
• branching cells
• richly vascularized
• lipofuscin granules