ANAT 261 Lecture Notes - Epimysium, Endomysium, Perimysium
15 Mar 2012
School
Department
Course
Professor
Document Summary
Lab 5 muscle in the lab, we will look at three types of muscle: skeletal muscle, cardiac muscle, smooth muscle. *need to know how to distinguish each in longitudinal and cross section! Multinucleated cell (muscle cell = muscle fiber) in cross section: nuclei lie at periphery, nuclei are elongated, can see myofibrils packed within a fiber (made of actin and, each muscle fiber surrounded by endomysium myosin) A layer of loose connective tissue, reticular fibers and in longitudinal section: basement membrane: a bundle of muscle fibers form a fascicle surrounded by the perimysium contains blood vessels and nerves. A thicker layer of loose connective tissue, that: the entire muscle is surrounded by the epimysium, nuclei appear circular and at the edge of fibers, beware of fibrocytes in the connective tissue layers their. A sarcomere is defined from z line to z line in em: mitochondria can be seen between rows of sacromeres.
