S2689C Kinesiology in Sports Lesson 1 The Basics of Human Anatomy School of Sports, Health and Leisure Learning Objectives • Identify and describe the five functions of the skeletal system. • Identify and classify the articulations (joints) of the axial skeleton. • Identify the anatomical structure and the major muscles of the vertebral column and thoracic cage. • Apply the basic terminologies in describing human movements related to the vertebral column and thorax, and their associated muscles in sports. Copyright © Republic Polytechnic Human Anatomy & Planes of Motion Human Anatomy The study of structures and morphology of the human body. Why Study Anatomy? • Consistent method of naming tissues and organs • Consistent vocabulary when describing the human body • Consistent terminology when describing locations and planes of movement Copyright © Republic Polytechnic Anatomical Position and Planes Anatomical position: The universal starting reference point for describing the human body. Important as it is used in all anatomical description, specifying locations of specific parts of the body relative to other body parts. Coronal Plane Anatomical planes: imaginary surfaces that separate the body into segments. Terms of reference • Anterior – Posterior • Left – Right / Medial – Lateral • Superior – Inferior • Proximal – Distal Copyright © Republic Polytechnic Sagittal Plane Transverse Plane Anatomical Planes Coronal (Frontal) plane: Segments the body into anterior (towards the chest) or posterior (towards the back) parts Mid-Sagittal (Median) plane: Segments the body into right and left halves; as well as medial (towards the middle of the trunk) and lateral (away from the middle of the trunk) Transverse (Horizontal) plane: A horizontal cut that divides the body into upper and lower parts Copyright © Republic Polytechnic Human Anatomy – Directional Terms (1/2) Anterior Medial Posterior Lateral Superior Proximal Copyright © Republic Polytechnic Inferior Distal (Source: McKinley et. al., 2015, p. 13) Human Anatomy – Directional Terms (2/2) Direction Term & Meaning Relative to front Anterior: In front of; toward front surface (belly side) or back Posterior: In back of; toward back surface of body Relative to head or Superior: Closer to the head tail of body Inferior: Closer to the feet Relative to midline/centre of body Medial: Toward midline of body Lateral: Away from midline of body Superficial: On the outside Deep: On the inside, underneath another structure Relative to point of attachment of the appendage Proximal: Closest to point of attachment to trunk Distal: Furthest from point of attachment to trunk (Source: McKinley et. al., 2015, p. 12) Copyright © Republic Polytechnic Movements in the Coronal Plane Radial deviation Ulnar deviation Abduction Eversion Lateral flexion to the right Adduction Inversion Lateral flexion to the left Frontal plane joint actions at the shoulder, hip, wrist, and ankle, trunk and neck Copyright © Republic Polytechnic Movements in the Sagittal Plane Wrist Shoulder Hip Flexion Flexion Extension Flexion Extension Extension Extension Extension Hyperextension Hyperextension Hyperextension Flexion Extension Extension Flexion Neck Knee Flexion Flexion Trunk Ankle Extension Sagittal plane joint actions at the, elbow, shoulder, hip, knee, trunk, and neck and ankle Copyright © Republic Polytechnic DorsiFlexion Plantar Flexion Movements in the Transverse Plane External rotation Internal . rotation External rotation Horizontal adduction Internal rotation Rotation to the right Supination Pronation Horizontal abduction Horizontal abduction Horizontal adduction Rotation to the left Rotation to the left Rotation to the right Copyright © Republic Polytechnic Anatomy of the Human Skeleton Video Human Body-Skeletal System (0 - 11’30”): https://www.youtube.com/watch?v=NP29ejPrOPE Copyright © Republic Polytechnic Anatomy of the Human Skeleton Axial skeleton includes bones of the head, back, and chest. Bones in appendicular skeleton are related to movement of the limbs. Copyright © Republic Polytechnic Anatomy of the Human Skeleton - Functions Axial Appendicular • Comprises • skull • vertebral column • rib cage • Support, stabilise and protect vital organs • Comprises • pectoral (shoulder) girdle • pelvic (hip) girdle Appended from • upper limbs (arms) the girdles • lower limbs (legs) • Long bones create large movements • Short bones create more complex and fine movements Copyright © Republic Polytechnic Anatomy of the Human Skeleton Bones are classified according to shape. Long bone (humerus) Type of Bone Examples Short Bones in wrist & ankles Long Bones of upper arm & thigh Flat Bones of skull & scapula Irregular Bones in face & spine Sesamoid Bones embedded in tendons, i.e. knee Flat bone (sternum) Irregular bone vertebra) Short bone (trapezoid, wrist bone) Sesamoid bone (patella) Copyright © Republic Polytechnic Types of Bones – Axial Skeleton Most bones in axial skeleton are either irregular or flat Copyright © Republic Polytechnic Types of Bones – Appendicular Skeleton Copyright © Republic Polytechnic Joints – The Articular System (1/3) Type of Joint Example Description Types of movements Ball-andsocket Hip and shoulder Ball-like convex surface joints that fits into a concave socket Permits 3 degrees of motion Condyloid Between metacarpals and phalanges Concave of one joint is allowed to slide on the convex of the other Permits 2 degrees of motion; rotational movement not possible Plane Intercarpal joints Articulating surfaces are nearly flat or slightly curve Permits gliding between 2 joints (Source: Adapted from Norkin & Levangie, 1992) Copyright © Republic Polytechnic Joints – The Articular System (2/3) Type of Joint Example Description Types of movements Hinge Joints in elbow and phalanges The convex surface of one Permits 1 degree bone fits into a concave freedom of surface of another motion Pivot Joint between 1) proximal end of radius and ulna; and 2) anterior arch of atlas and dens of axis The cylindrical surface of one bone rotates within a ring formed of bone and ligament Permits 1 degree freedom of motion Saddle Joint between carpal (trapezium) and metacarpal of thumb Each joint surface is both convex in one plane and concave in the other Permits 2 degrees of motion (Source: Adapted from Norkin & Levangie, 1992) Copyright © Republic Polytechnic Joints – The Articular System (3/3) How Bones Work Types of Joints Pivot Ball & Socket Hinge Saddle Plane Condyloid Copyright © Republic Polytechnic Anatomy of the Muscular System Responsibilities of the Muscular System Body movement Body form and shape, to maintain posture Body heat, to maintain temperature Storage and moving substances through the body Copyright © Republic Polytechnic Major Types of Muscles Cardiac Muscles • Involuntary, found only in the heart Skeletal muscles • Voluntary, formed the fleshy body parts Smooth muscles • Involuntary, found in the walls of the internal organs (Source: http://www.picturesdepot.com/) Copyright © Republic Polytechnic How bones and muscles are connected (1/2) Connective tissues Cartilage (Hyaline, fibrocartilage & elastic cartilage) • Provide firm but flexible support for the embryonic skeleton and part of the adult skeleton Ligaments - Dense fibrous tissue • Strong, flexible bands which hold bones firmly together at the joints Tendons - Dense fibrous tissue • White, glistening bands attaching skeletal muscles to the bones Copyright © Republic Polytechnic How bones and muscles are connected (2/2) Cartilage Tendon Ligament Copyright © Republic Polytechnic Functions of Connective Tissues (1/2) Bind the cells in various tissues, organs and systems Support and hold organs in place Provide stability and shock absorption in joints Provide flexible links between bones in certain types of joints; Provide smooth articulating surfaces between bones in other types of joints Transmit forces during muscular contractions Copyright © Republic Polytechnic Functions of Connective Tissues (2/2) Cartilage Ligaments Tendons • Capable of resisting • Connects one • Connects muscle all types of loads, bone to bulk to the bone especially bending another bone • When muscle and twisting • Provides contracts, the • Lubrication & shock stability to the force is exerted absorption joint by through the • Distribution of loads preventing tendon, which over joint surface excessive causes joint • Improvement of fit of sliding of joint angles to either articulating surfaces surfaces increase or decrease Copyright © Republic Polytechnic Anatomical Structure & Major Muscles Vertebral Column & Thorax Vertebral Column Cervical 7 vertebrae (C1-C7) Functions: Thoracic Anterior view 12 vertebrae (T1-T12) Lumbar 5 vertebrae (L1-L5) • Structural support for the body o Provide a base support for the Right body lateral view o Transmits weight of trunk to lower limbs • Allows movements • Surrounds and protects spinal cord • Provide shock absorption for the body Sacrum 5 fused vertebrae Coccyx (Source: Marieb & Hoehn, 2010, p. 217) 4 fused vertebrae Copyright © Republic Polytechnic Thoracic Cage • Comprises o Thoracic vertebrae o Sternum o Ribs & costal cartilages • Functions o Protects vital organs of thoracic cavity o Supports shoulder girdle & upper limbs o Attachment sites for many muscles, including intercostal muscles used during breathing Anterior View Sternum True ribs (1–7) • Manubrium • Body • Xiphoid process False ribs (8–12) Floating ribs (11, 12) (Source: Marieb & Hoehn, 2010, p. 224) Copyright © Republic Polytechnic Muscle Attachments Origin Insertion Biceps brachii muscle originates on the scapula and inserts on the radius. Contraction of this muscle pulls the forearm toward the shoulder. • At the ends of a muscle, connective tissue layers merge to form a fibrous tendon • Most muscles cross at least one mobile joint • On contraction, one of the bones moves; the other is usually fixed • Origin: less mobile attachment • Insertion: more mobile attachment • Usually, muscle insertion is pulled toward the origin (Source: McKinley et. al., 2015, p. 291) Copyright © Republic Polytechnic Muscles of Vertebral Column and Thorax for Movement (1/2) Facilitate head and trunk movements. Anterior-Lateral Neck: • Sternocleidomastoid Abdominal wall: • Rectus abdominis • External oblique • Internal oblique • Transverse abdominis Back Intrinsic muscles: • Iliocostalis Erector • Longissimus Spinae • Spinalis • Quadratus lumborum • Multifidus Copyright © Republic Polytechnic Muscles of Neck and Vertebral Column for Movement (2/2) Facilitate head movements and trunk extension. Neck flexion & Rotation Sternocleidomastoid (Source: http://en.wikipedia.org/wiki/St ernocleidomastoid_muscle) Extension of vertebral column Maintain erect posture (Source: Marieb & Hoehn, 2010, p. 339) Copyright © Republic Polytechnic Abdominal Muscles (1/2) Muscles of anterolateral abdominal wall Transversus abdominis (Compress abdominal content) Lateral Flexion & Compress abdominal wall Flexion & Rotation of vertebral column Internal oblique External oblique Rectus abdominis (Source: Marieb & Hoehn, 2010, p. 343) Copyright © Republic Polytechnic Abdominal Muscles (2/2) Lateral view of trunk External oblique Rectus abdominis Internal oblique Transversus abdominis Transverse section through anterolateral abdominal wall (Source: Marieb & Hoehn, 2010, p. 343) Copyright © Republic Polytechnic References • • • • • • • Floyd, R. T. (2007). Manual of Structural Kinesiology (6th ed.). Boston: McGraw-Hill. Klavora, P. (2008). Foundations of Kinesiology: Study Human Movement and Health. Toronto, Canada: Sport Books Publisher. Marieb, E. N., & Hoehn, K. (2010). Human Anatomy & Physiology (8th ed.). Glenview, IL, USA: Pearson Education. McGinnis, P. M. (1999). Biomechanics of Sport and Exercise. Champaign, IL: Human Kinetics. McKinley, M. P., O’Louglin, V. D., Pennefather-O’Brien, E., E., & Harris, R. T. (2015). Human Anatomy (4th ed.). NY: McGraw-Hill. Norkin C..C. & Kevangie P.K. (1992). Joint Structure & Function - A Comprehensive Analysis. (2nd Ed.). USA: F.A. Davis Company. The Skeletal and Muscular System. https://www.youtube.com/watch?v=NP29ejPrOPE Copyright © Republic Polytechnic How Muscles are Named (1/2) Supplementary Information • Location of the muscle – Indicate body region (e.g., tibialis anterior) • Shape of the muscle – E.g., deltoid (triangular); trapezius (trapezoid) • Relative size of muscle – Maximus (largest), minimus (smallest), e.g., gluteus maximus/minimus; longus (long), brevis (short), e.g., adductor longus/brevis • Number of origins – Biceps (2), triceps (3), quadriceps (4) Copyright © Republic Polytechnic Supplementary Information – How Muscles are Named (2/2) Supplementary Information • Direction of muscle fibers – Rectus (straight), e.g., rectus femoris; transversus (right angles), e.g., transversus abdominis; oblique (runs oblique), e.g., external/internal obliques • Location of attachments – Origin named first; e.g., sternocleidomastoid (dual origin at sternum and clavicle) and insertion at the mastoid process of temporal bone • Action – Flexor (e.g., flexor carpi ulnaris), extensor (e.g., extensor digitorum), adductor (e.g., adductor magnus) Copyright © Republic Polytechnic