proteins AtP bend ISOLATED DOUBLET NORMAL MICROTUBULES FLAGELLUM (A) DYNEIN PRODUCES DYNEIN CAUSES MICROTUBULE SLIDING MICROTUBULE TO BEND
Plus(-Ie e Bending ot microtubules Moe menl of ciy hear group warmia inus enc or b tubule Minus f- end Nexin link
9.2 Muscle Contractility Transverse Neuromuscular tubule Itochu vo Sarcoplasm Nucleus
(b)Bundle of muscle fibers (muscle ceils) (d) Myofibrils c)Indiidual (e) sngle O)) Sarcomere (n Port on ot Thick filaments Figure 23-10 ation of Skeletal M terally. giving skeletal muscle its striated appearance. (f) The unit of a) Muscle tis contraction along each myofibril is the sarcomere, in which thick must move. (b) of bundles of muscle filaments interdigitate with thin filaments. The thick and thin filaments eate cell. (d) Within each c consist primarily of myosin and actin, respectively ofibrils (e) Eac ists of bundles of filaments aligned
I band end a band -end i band H zone Thick filamentsucwedoceigoodoonv3 Acti flamen +end Z line Z line 。::。。。°。 °。°。°。°°