5.1- Anatomy of the Muscular System- Introduction & Muscles of the Head, Neck, and Trunk.pdf

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6/6/20205.1: Anatomy of the Muscular System: Introduction & Muscles of the Head, Neck, and Trunk: Essential Human Anatomy and Physiology I with Lab- Bo…1/155.1: Anatomy of the Muscular System:Introduction & Muscles of the Head, Neck,and TrunkNotice:To optimize your learning in this course, we advise that you complete the labs and modulesas indicated in the BIOD 151 Lab Schedule.The muscular system and the skeletal system work together to provide movement for the humanbody. Muscle tissue is found in three distinct types in the body; skeletal, smooth, and cardiac.Skeletal muscles must have a blood and nervous supply to provide movement. Skeletal muscles areunderconscious control, meaning that a person can consciously decide to use these muscles tocomplete an action. Communication within the body to coordinate movement starts in the brain with amessage that is sent through the spinal cord and eventually attaches to a muscle.Peripheral nervescarry the signal from thecentral nervous system(brain and spinal cord) to a specific muscledestination to provide movement. Messages from the central nervous system to a muscle arecalledmotoractions. Nerves also carry information from the external environment to the centralnervous system, called sensation orsensoryinput (seeFigure 5.1andFigure 5.2). Spinal nervescombine to form complex networks of peripheral nerves throughout the body.
6/6/20205.1: Anatomy of the Muscular System: Introduction & Muscles of the Head, Neck, and Trunk: Essential Human Anatomy and Physiology I with Lab- Bo…2/15Figure 5.1 Posterior view of the nervous system.The brain and spinal cord (central nervoussystem) connect to the peripheral nervous system. Examples of peripheral nerves are spinal nerves(cervical, thoracic, and lumbar), the upper trunk of the brachial plexus, and the radial nerve.
6/6/20205.1: Anatomy of the Muscular System: Introduction & Muscles of the Head, Neck, and Trunk: Essential Human Anatomy and Physiology I with Lab- Bo…3/15Figure 5.2Peripheral nerves carry the communication from the central nervous system (brain andspinal cord) to the muscle. Peripheral nerves also carry information from the environment to thecentral nervous system.Tendonsare connective tissues that connect skeletal muscle to bone at each end (seeFigure 5.3).Tendons are flexible, can bend at the joints, and help cushion against sudden movement.Ligamentsare connective tissue that connects bone to bone, helping to stabilize joints where bones meet.
6/6/2020

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Term
Spring
Professor
Rebekah Stepp
Tags
Facial nerve, Muscles of the Head

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