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Anatomy & Phys

Study Guide Chapter 9 Joints

QuestionAnswer
JOINTS ARE The place where two or more bones meet which are called ARTICULATION
FUNCTIONAL CLASSIFICATION OF JOINTS Are based on the degree of MOVEMENT they permit, they can be IMMOVABLE, SLIGHTLY MOVABLE OR FREELY MOVEABLE
Three types of JOINTS are SYNARTHROSIS--The Articulating bones are COMPLETELY IMMOVABLE OR FIXED JOINTS AMPHIARTHROSIS--A SLIGHTLY MOVEABLE joint DIARTHROSIS--A FREELY MOVABLE joint
EXAMPLES of SYNARTHROSIS JOINTS ARE SUTURES(All joints in the SKULL except TMI-Temporal Mandibular Joints) JOINTS between the FIRST RIB and the STERNUM EPIPHYSEAL PLATE of the growing bones
EXAMPLES of DIARTHROSIS JOINTS ARE SHOULDER JOINT ELBOW JOINT HIP JOINT KNEE JOINT CARPAL JOINT MANY, MANY OTHERS
EXAMPLES of AMPHIARTHROSIS INTERVERTEBRAL JOINTS PUBIC SYMPHYSIS DENTOALVEOLAR JOINT
SYNOVIAL JOINTS have certain CHARACTERISTICS that distinguish them from OTHER JOINTS The UNIQUE CHARACTERISTICS of a SYNOVIAL JOINT is the presence of a space called a SYNOVIAL CAVITY which contains FLUIDS that separates the articulating bones Outside the SYNOVIAL CAVITY are ARTICULATING BONES that are connected by a DENSE CONNECTIVE CAPSULE The bones of a Synovial Joint are covered by a LAYER of HYALINE CARTILAGE called ARTICULAR CARTILAGE that covers the articulating surface of each bone. All synovial joints are DIARTHROSIS-FREELY MOVABLE
DETAILS of a SYNOVIAL JOINTS The FIBROUS CAPSULE contains DENSE CONNECTIVE TISSUE that attaches to the articulate bones. The LIGAMENTS are formed by BUNDLES of CONNECTIVE TISSUES and holds the bones together.
DETAILS of a SYNOVIAL JOINTS The SYNOVIAL MEMBRANE secretes SYNOVIAL FLUID which is a PALE YELLOW FLUID
DETAILS of a SYNOVIAL JOINTS The SYNOVIAL CAVITY contains SYNOVIAL FLUID
DETAILS of a SYNOVIAL JOINTS ARTICULAR CARTILAGE is a SMOOTH WHITE TISSUE that covers the ENDS OF THE BONE they come together to form the JOINT
DETAILS of a SYNOVIAL JOINTS HYALINE CARTILAGE provides a smooth surface enabling tissues to MOVE/SLIDE over each other.
SYNOVIAL FLUID CHARACTERISTICS SYNOVIAL FLUID is a VISCOUS , CLEAR OR PALE YELLOW FLUID that has the appearance of an uncooked egg white
FUNCTIONS OF THE SYNOVIAL FLUID LUBRICATES and PROVIDES SHOCK ABSORPTION for the JOINT
FUNCTIONS OF THE SYNOVIAL FLUID Distributes OXYGEN and NUTRIENTS to the ARTICULAR CARTILAGE and REMOVES METABOLIC WASTES
FUNCTIONS OF THE SYNOVIAL FLUID Contains PHAGOCYTES to remove DEBRIS and MICROBES
JOINT MOVEMENT ARE CAUSED BY The MOVEMENT of MUSCLES
JOINT MOVEMENT ORIGIN Are the FIXED BONY ATTACHMENT
JOINT MOVEMENT INSERTION Are the BONY ATTACHMENT that MOVES when the MUSCLE CONTRACTS
JOINT MOVEMENT ACTION Are the JOINT MOVEMENT occurring when the MUSCLE CONTRACTS
MUSCLE ACTIONS (FLEXION/EXTENSION/HYPEREXTENSION FLEXION-DECREASING the ANGLE of a JOINT or moving a body part ANTERIORLY EXTENSION-INCREASING the ANGLE of a joint or moving a body part POSTERIORLY HYPEREXTENSION-EXCESSIVE EXTENSION
MUSCLE ACTIONS ABDUCTION AND ADDUCTION ABDUCTION-MOVING a body part AWAY from a MIDLINE ADDUCTION-MOVING a body part TOWARD A MIDLINE
MUSCLE ACTIONS CIRCUMDUCTION CIRCUMDUCTION-MOVING a body part in a 360 degree angle
MUSCLE ACTIONS ROTATION ROTATION-MOVEMENT of a body part ALONG ITS OWN LONGITUDINAL AXIS
MUSCLE ACTIONS ELEVATION AND DEPRESSION ELEVATION-MOVEMENT of a body part SUPERIORLY DEPRESSION-MOVEMENT of a body part inferiorly DESCRIBES the MOVEMENT of the MANDIBLE and SHOULDERS
MUSCLE ACTIONS PROTRACTION AND RETRACTION PROTRACTION-MOVEMENT of the MANDIBLE RETRACTION-MOVEMENT of the MANDIBLE POSTERIORLY
MUSCLE ACTION PRONATION AND SUPINATION PRONATION- MEDIAL ROTATION of the FOREARM that directs the PALMAR SURFACE of the HAND POSTERIORLY SUPINATION-LATERAL ROTATION of the FOREARM that directs the PALMAR SURFACE to the HAND ANTERIORLY
MUSCLE ACTION INVERSION AND EVERSION INVERSION-MOVEMENT of the PLANTAR SURFACE of the FOOT INWARD TOWARD the MIDLINE EVERSION-MOVEMENT OF THE PLANTAR SURFACE of the FOOT INWARD TOWARD the MIDLINE
MUSCLE ACTION DORSIFLEXION AND PLANTAR FLEXION DORSIFLEXION-MOVEMENT of the DORSAL SURFACE of the FOOT POSTERIORLY;(Weight is on the heel) PLANTAR FLEXION-MOVEMENT of the PLANTAR SURFACE of the FOOT POSTERIORLY (WEIGHT is on the toes)
MUSCLE ACTION OPPOSITION OPPOSITION-THE MOVEMENT of the thumb across the PALM to TOUCH the TIPS of the FINGERS An EXTREMELY IMPORTANT MOVEMENT developed by HUMANS AND OTHER PRIMATES
Created by: rbissoon29