PPT-Muscle Tissue J. Matthew Velkey, Ph.D.

mattvelkeydukeedu 452A Davison Duke South Muscle Tissue I Striated Muscle regularly arranged contractile units A Skeletal Muscle long cylindrical multinucleated cells with peripherally placed nuclei Contraction is typically quick and vigorous and under voluntary control Used for locomotion mastication and phonation. 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. 9/23. What are the primary characteristics of the three types of muscle tissue?. What cell adhere to/connect with each other and the basement membrane?. How are glands classified?. What are the primary secretions?. 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 . A. Connective Tissue General Characteristics. 1. . Connective tissues:. a. Bind. . b. Support. . c. Protect. . d. serve . as frameworks. . e. fill . spaces. . f. store . fat. . g. produce . 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 . Chapter 6. Time for a Movie.  . Discovery . Channel . Pushing the Limits: Muscle Fibers.  . 10:39: Describe skeletal muscle fibers (muscle cells)..  . 11:21 How many skeletal muscle fibers do we normally use at any one time?. Chapter 5: The Muscular System. The three major categories of muscle fibers are:. Skeletal . Smooth . Cardiac . Muscle Tissue. Skeletal Muscle (striated / voluntary muscle). Attached . to bones . and are largely . 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. m. att.velkey@duke.edu. 454A Davison, Duke South, Green Zone. Atelectasis (collapse). Resorption. Obstruction (e.g. infection or inflammation or mucous plug in CF patients): air downstream of blockage is slowly resorbed. m. att.velkey@duke.edu. . 454A Davison, Duke South (Green Zone). Human Limb Development. 5 weeks. 6 weeks. 8 weeks. Limbs develop from paraxial (. somitic. ). and lateral plate mesoderm. From . somites. matt.velkey@duke.edu. 454D Davison, Duke South, Green Zone. Lecture Outline. Cutaneous wound healing. Healing by first intention. Healing by second intention. Wound strength changes. Pathologic aspects of repair. soft tissue. found in most animals. . Muscle cells. contain . protein. filaments of . actin. and . myosin. that slide past one another, producing a . contraction. that changes both the length and the shape of the cell. Muscles function to produce force and . Syed Asaad Hussain. Spencer Ryan Keilich. Stephanie Jo Lindow. Shreyas Renganathan . Overview. Background. Significance . Drug Approval Process. Background Research. Current Devices. Project Direction. 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.