6. __ structures are remained from osteons partially destroyed by osteoclasts during growth and remodeling of bone. A. Central canal B. Volkmann canal C. External circumferential lamellae D. Inner circumferential lamellae E. Interstitial lamellae 7. I. Blood vessels and osteoblasts invade the lacunae of the old cartilage. II. Bone marrow cavities and osteoid are produced. Which epiphyseal plate zone does this information belong to? A. Zone of resting or reserve cartilage B. Zone of proliferating cartilage C. Zone of hypertrophic cartilage D. Zone of ossification E. Zone of calcified cartilage 8. I. Signal is transmitted along the T tubules to the sarcoplasmic reticulum to trigger Ca2+ release fron terminal cisternae into the sarcoplasm. II. The released calcium ions bind troponin, chance i shape. This leads to moving of the tropomyosin on t F-actin and exposing the myosin-binding active sit and allow crossbridges to form. III. When the impulse stops, calcium ions are activ transported into the sareoplasmic reticul tropomyosin re-covers active sites and filam passively slide back to their relaxed state. IV. Binding actin produces a conformational chang the myosins, which pulls the thin filaments toward sarcomere center. V. ATP binds myosin heads and is broken down ADP and P. Myosin heads detach from thin fila and return to their prepivot position. What is the correct order in the contraction mecl of the skeletal muscle? A. I-II-III-IV -V B. I-II-IV-V-III C. II-I-IV-III -V D. II-I-III-IV-V E. I-II-V-IV-III 9.What are the transverse regions of intercalated cardiac muscle? A. Gap junction-Fascia adherens B. Zonula occludens-Makula adherens C. Fascia adherens-Desmosomes D. Zonula adherens-Gap junction E. Desmosomes-Gap junction