PPT-HISTOLOGY OF THE CARDIAC MUSCLE

Pamela BL Introduction The cardiac muscle forms the muscular wall of the heart that is it forms the myocardium Some of the cardiac muscle is also present in the walls of the aorta pulmonary vein and superior vena cava. Cycle: . diastole Phase. A heartbeat is a two-part pumping action that takes about a second. . This part of the two-part pumping phase (the longer of the two) is called . diastole. .. Diastole. begins as the ventricles start to relax. Soon the pressures within the aorta and pulmonary artery exceed ventricular pressures, causing the . What is Muscle Tissue?. Composed of cells that are highly specialized to shorten in length by contractility.. Made up of cells that are called . myocytes. .. Elongated in one direction (muscle . fibres. 4 types of tissues. 1-Connective tissue. 2-Muscle tissue. 3-Nervous tissue. 4-Epithelial tissue. Connective tissue. 1-Artery.. 2-Vein.. 3-Hyaline cartilage.. Vein and Artery. Hyaline Cartilage. Muscle tissue. The third category of muscle is cardiac muscle, which makes up most of the heart. Like skeletal . muscle, . it is striated. Like smooth muscle, it can propagate action potentials from cell to . cell. There . Dr. Ayisha Qureshi . Assistant Professor,. MBBS, MPhil. Location of the Heart:. The Pericardium & the Pericardial Sac: . The . heart is enclosed in the double-walled, membranous . pericardial sac . Muscle Tissue Characteristics. Contractile. Made of contractile proteins. Cells are called fibers. Skeletal Muscle. 40% of body weight. Under voluntary control; attached to skeleton. Striated, or banded, appear. Composed of cells that are highly specialized to shorten in length by contractility.. Made up of cells that are called . myocytes. .. Elongated in one direction (muscle . fibres. ).. Special Terms. Plasma Membrane . Objectives. Histologically identify and functionally characterize each of the 3 types of muscle tissues.. Describe the organization of the sarcomere as seen in light and electron microscopy.. Identify the . Histology Lecture . Series. Larry . Johnson, Professor. Veterinary Integrative Biosciences. Texas A&M University. College Station, . TX 77843. Muscle. – Introduction. Contractivity. is one of the . Contractile. Made of contractile proteins. Cells are called fibers. Skeletal Muscle. 40% of body weight. Under voluntary control; attached to skeleton. Striated, or banded, appear. ance. Cells have multiple nuclei. It’s best to view this in . Slide Show . mode, especially for the quizzes.. This module will take approximately 45 minutes to complete.. After completing this exercise, you should be able to:.  . Distinguish, at the light microscope level, each of the following::. . vessels. 2020 02 27. Semmelweis . University, Budapest. Dr. . Nandor. Nagy . Developing. . blood. . vessels. . in zebrafish. embryo . RED: . neurons. GREEN:. . blood vessels. 5 dpf Tg(fli-EGFP). The muscular . tissue consists . of all the muscles of the body. These make up . almost 42. % of total body weight, and are composed of . long cells . known as fibers. The fibers are different lengths and vary in color from white to deep red. Introduction. . Multicellular Organisms Need 3 Mechanisms . ------------------------------------------------------------- . Distribute oxygen, nutrients, and hormones.