Muscle and Nervous Tissue PDF

MUSCLE AND NERVOUS TISSUE Andrea Gabrielle P. Panzo, RMT Illustration by Smart-Servier Medical Art  LESSON INTENDED...

MUSCLE AND NERVOUS TISSUE Andrea Gabrielle P. Panzo, RMT Illustration by Smart-Servier Medical Art  LESSON INTENDED LEARNING OUTCOMES 1. Distinguish the three basic types of muscle tissue 2. Identify the primary components of nerve tissue 3. Recognize muscle and nerve tissue types in figures and specimen Illustration by Smart-Servier Medical Art  IDENTIFY THE MUSCLE TYPE Illustration by Smart-Servier Medical Art IDENTIFY THE MUSCLE TYPE SMOOTH MUSCLE Illustration by Smart-Servier Medical Art IDENTIFY THE MUSCLE TYPE SKELETAL MUSCLE Illustration by Smart-Servier Medical Art IDENTIFY THE MUSCLE TYPE CARDIAC MUSCLE Illustration by Smart-Servier Medical Art  MUSCLE TISSUE All three muscle tissue types contain cells with the ability to contract. All muscle tissues are composed of long, cylindrical cell called muscle fibers. Muscle cells are living cells while connective tissue fibers are nonliving protein fibers.  Muscles Connective tissues Illustration by Smart-Servier Medical Art  SKELETAL MUSCLE Gets its name because it is attach to the skeleton and move its part. Also called as striated muscle and voluntary muscle.  SKELETAL MUSCLE Skeletal muscle cells are large, fiber-like cells with fine cross stripes and many nuclei per cell. EDIT LANDMARK CHARACTERISTICS Large cells with characteristics striped pattern. Longitudinal section: muscle fiber is generally parallel with stripes at right angles across each other. Unique: have many nuclei/cell. Fibrous connective tissue may be seen between muscle cells  CARDIAC MUSCLE Striated involuntary muscle Found only in the walls of the heart Branched Intercalated disks LANDMARK CHARACTERISTICS Striation less distinct than skeletal muscles. Single nuclei, has branches, not tapered at their ends. Attached end to end by intercalated disks  SMOOTH MUSCLE no distinct striations Involuntary muscle type Walls of the hollow organs such as digestive organs and blood vessels. Long thread like cells with single nucleus Parallel with one another and with the edge of the wall LANDMARK CHARACTERISTICS No striations and single nucleus Cells are pink and nuclei are purple or black Confused with dense fibrous tissue Smooth Muscle Dense Fibrous Tissue  SUMMARY TISSUE LOCATION FUNCTION Muscles that attach to bones Movement of bones Skeletal muscle Extrinsic eyeball muscles Eye movement Striated, voluntarily Upper third of esophagus First part of swallowing In walls of tubular viscera of digestive, Movement of substances along respiratory, ang GUT tracts. respective tracts Change diameter of blood vessels, In walls of blood vessels and large thereby aiding in regulation of blood lymphatic vessels Smooth muscle pressure Nonstriated, involuntary, visceral In ducts of glands Movement of substances along ducts Intrinsic eye muscle (iris and ciliary Change diameter of pupils and shape body) of lens Arrector muscles of hairs Erection of hairs Cardiac Striated, involuntary Wall of heart Contraction of heart  NERVOUS TISSUE Illustration by Smart-Servier Medical Art NERVOUS TISSUE Compose organs of nervous system (brain, spinal cord, and nerves) Two basic cell types: neurons and glia Neurons - large cell with nucleated bodies and projections called axons and dendrites. Glia/Neuroglia – smaller and more numerous than neurons. Surround and support neuron physically or biochemically. LANDMARK CHARACTERISTICS Neurons – extremely large, with body having a large nucleus. Neuron projections crisscross throughout. Glia- tiny, dark dots.  SUMMARY TISSUE LOCATION FUNCTION Muscle Muscles that attach to bones Movement of bones Skeletal muscle Extrinsic eyeball muscles Eye movement Striated, voluntarily Upper third of esophagus First part of swallowing In walls of tubular viscera of digestive, Movement of substances along respiratory, ang GUT tracts. respective tracts Change diameter of blood vessels, In walls of blood vessels and large thereby aiding in regulation of blood lymphatic vessels pressure Smooth muscle Nonstriated, involuntary, visceral In ducts of glands Movement of substances along ducts Change diameter of pupils and shape of Intrinsic eye muscle (iris and ciliary body) lens Arrector muscles of hairs Erection of hairs Cardiac Striated, involuntary Wall of heart Contraction of heart Brain Excitability Nervous Spinal cord Conductance Nerves  ACTIVITY Answer Laboratory Exercise 9. Page 90-91. Figure 9.5: Muscle and Nervous Tissue Drawings Figure 9.6: THANK YOU!