PPT-Muscles II: Microscopic Anatomy and Contraction

October 24 25 2017 Muscle Structure Muscle Fascicle bundle of fibers Muscle Fiber single cell Myofibril organelle Sarcomere unit of contraction Microscopic Anatomy of Skeletal Muscle. . Contraction of Skeletal Muscle. . (fasicle). A. Muscle . Fiber. 1. . sarcolemma. . * muscle cell membrane . . * extends into muscle fiber (forms . T-tubules. ) . 2. . sarcoplasmic reticulum. Types of Muscle Tissue . (cont.). Muscle Group. Major Location. Major . Function. Mode of Control. Skeletal Muscle. Attached to bones and skin of the face. Produces body movements and facial expressions. I. Functions of Muscular Tissue. Like nervous tissue, muscles are excitable or "irritable”. they have the ability to respond to a stimulus. Unlike nerves, however, muscles are also:. Contractible. . Muscular System. Part 1. Muscular Tissue . 3 types:. Skeletal. striated & voluntary. Cardiac. striated & involuntary. Smooth . Smooth & involuntary. Types of Muscle Tissue. most attached to bone. Functions of the kidney. Excretory. Keeps the electrolyte balance. Keeps the acid-base balance. Keeps the water balance. Gross anatomy . Kidney. The right kidney is in a lower position than the left.. Learning Objectives. List . the four traits that all muscle types have in common.. Demonstrate . and explain the use of antagonistic muscle pairs.. Describe . the attachment of muscle to bone and how it leads to movement.. perfomance. enhancing drugs?. 2. Would . you consider supplements such as . Creatine. to be a performance enhancing drug? Why or why not?. The Muscular System. A&P Fall 2016. I. Overview of Muscle Tissues. 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 . Energy Sources for Contraction. ATP is the supplied energy for muscles. Can only supply enough for a short period of time. ATP is generated from . Creatine. Phosphate. Contains high energy phosphate bonds . Produce movement. Maintain posture. Stabilize joints. Generate heat. The Muscular System. Muscles are responsible for all types of body movement. Three basic muscle types are found in the body. Skeletal muscle. The Muscular System. Muscles are responsible for all types of body movement. Three basic muscle types are found in the body. Skeletal muscle. Cardiac muscle. Smooth muscle. Characteristics of Muscles. Chapter . 4 SEHS. Muscle Tissue. Lecture Outline. Principles of Human Anatomy and Physiology, 11e. 3. INTRODUCTION. Motion results from alternating contraction (shortening) and relaxation of muscles; the skeletal system provides leverage and a supportive framework for this movement.. Types of muscle tissue: . There are 3 types of muscle tissue found in an animal body. However, they are the Biological motors that convert chemical energy into mechanical & translate the signals from the CNS into movements.. Muscle Facts 1. Smallest muscle in the body?. Stapedius. : the muscle that activates the stirrup, the small bone that sends vibrations from the eardrum to the inner ear. It measures just 0.05 inch (0.13 centimeter) in length..