JointsSkeletal bones functionally connected at articulations or jointsSynarthroidial (immoveable, fibrous)Amphiarthroidial (yielding, cartilaginous)Diarthroidal (moveable)Synarthroidial (immoveable)skull suturesnasal bonesteethAmphiarthroidal (cartilaginous)Pubic symphysisRibs to sternumVertebraDiarthroidal (moveable)ShoulderRibs to vertebraInterphalangeal Joint (finger)Nervous TissueHighly specialized cellsBasic unit is neuronEx) three types of neuronsMuscle TissuePerforms mechanical work by contractingResponsible for all voluntary and much of our involuntary behaviorSmoothStriatedVariations—shape of muscleSmooth MuscleStriated (skeletal) MuscleCardiac MuscleMuscle AttachmentsMuscle typically has two attachments…origin and insertionOrigin—attachment that is fixed or move lessInsertion—structure being acted upon or moved via contractionMuscle ActionTypically produces movementAct on joint lying between origin and insertionMuscle and joint that it acts upon form lever systemClass I Lever SystemMay operate with mechanical advantage or disadvantageArm extension is example of mechanical disadvantagePower is lost, but range and speed of movement gainedMechanical Advantage/DisadvantageAdvantageForce arm > resistance armSmall applied force will move large resistive force (load)DisadvantageForce arm < resistance armLarge applied force required to overcome small resistance force (load)Class II Lever SystemAlways operate with a mechanical advantageExample—opening jaw against resistanceClass III Lever SystemAlways operate with mechanical disadvantagePower lost but speed of movement gainedExample—Arm flexionVascular TissueFluid tissues such as blood or lymphOrgans, Systems, RegionsOrgan—2 or more tissues combined together to exhibit functional unitySystem—2 or more organs combined to exhibit functional unityRegion—particular area of body, perhaps containing more than 1 organ and/or systemCSD 3112 1st Edition Lecture 3 Outline of Last Lecture I. Tissuesa. Epitheliali. Epithelialii. Mesothelialiii. endothelialb. Connectivei. Looseii. Denseiii. Specialiv. Bone1. Skeletal terminologya. Elevationsb. Depressions Outline of Current Lecture I. Tissuesa. Connective (continued)b. Nervousc. Musclei. Variationsii. Muscle Actioniii. Leversd. VascularCurrent LectureThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Joints- Skeletal bones functionally connected at articulations or joints- Synarthroidial (immoveable, fibrous)- Amphiarthroidial (yielding, cartilaginous)- Diarthroidal (moveable) Synarthroidial (immoveable)- skull sutures- nasal bones- teeth Amphiarthroidal (cartilaginous) - Pubic symphysis- Ribs to sternum- Vertebra Diarthroidal (moveable)- Shoulder- Ribs to vertebra- Interphalangeal Joint (finger) Nervous Tissue- Highly specialized cells- Basic unit is neuron- Ex) three types of neurons Muscle Tissue- Performs mechanical work by contracting- Responsible for all voluntary and much of our involuntary behavior- Smooth- Striated Variations—shape of muscle Smooth Muscle Striated (skeletal) Muscle Cardiac Muscle Muscle Attachments- Muscle typically has two attachments…origin and insertion- Origin—attachment that is fixed or move less- Insertion—structure being acted upon or moved via contraction Muscle Action- Typically produces movement- Act on joint lying between origin and insertion- Muscle and joint that it acts upon form lever system Class I Lever System- May operate withmechanicaladvantage ordisadvantage- Arm extension isexample ofmechanicaldisadvantage- Power is lost, butrange and speed ofmovement gainedMechanicalAdvantage/Disadvantageo Advantage Force arm > resistance arm Small applied force will move large resistive force (load)o Disadvantage Force arm < resistance arm Large applied force required to overcome small resistance force (load) Class II Lever System- Always operate with a mechanical advantage- Example—opening jaw against resistance Class III Lever System- Always operate with mechanical disadvantage- Power lost but speed of movement gained- Example—Arm flexion Vascular Tissue- Fluid tissues such as blood or lymph Organs, Systems, Regions- Organ—2 or more tissues combined together to exhibit functional unity- System—2 or more organs combined to exhibit functional unity- Region—particular area of body, perhaps containing more than 1 organ and/or