II - 4 Heart
cardiac muscle
rat, JB-4, H&E


II-4(Mu1)
cardiac muscle - x2 objective lens


BV - blood vessels (coronary vessels)
M - Myocard (cardiac muscle)
black box - seen at higher magnification in fig II-4(Mu2)
blue box - seen at higher magnification in fig II-4(Mu4)

II-4(Mu2)
cardiac muscle - x10 objective lens


BV - blood vessels (coronary vessels)
M(c) - myofibers (cross section)
M(l) - myofibers (longitudinal section)
arrowhead - branching of fibers
black box - seen at higher magnification in fig II-4(Mu3)

II-4(Mu3)
cardiac muscle - x40 objective lens


BV - blood vessel (coronary vessel)
ID - intercalated discs
M(l) - myofibers (longitudinal section)
N - nuclei of cardiac muscles (central position)
arrowhead - branching of fibers

II-4(Mu4)
cardiac muscle - x10 objective lens


BV - blood vessels (coronary vessels)
M(c) - myofibers (cross section)
blue box - seen at higher magnification in fig II-4(Mu5)

II-4(Mu5)
cardiac muscle - x40 objective lens


BV - blood vessels (coronary vessels)
CT - connective tissue
M(c) - myofibers (cross section)
N - nuclei of cardiac muscles (central position)