VCE P.E Unit 1, Top Exam Questions and answers, 100% Accurate, rated A

VCE P.E Unit 1, Top Exam Questions and answers, 100% Accurate, rated A Uniaxial only allows rotation - -Pivot Joint Flat bones glide past each other usually in biaxial manner - -Gliding Joint Rounded bond head articulates with a cup-shaped cavity - -Ball and Socket Joint Uniaxial Joint - -Hinge Socket Concave and Convex bone surfaces align, generally biaxial - -Saddle Joint Similar to hinge also allows rotation - -Condyloid Joint Three Types of Movement - -Skeletal, Cardiac, Smooth Neuromusculoskeletal System - -The nerves, bones and muscles within the body Epimysium - -If you were to take a muscle and cut through it, you would find the muscle is covered in a layer called... Perimysium - -Looking at the cross section of the muscle, you can see bundles of muscle fibres known as fascicles surrounded by a layer called the... Endomysium - -Looking at each muscle fibre in detail, you can see that they are surrounded by a thin layer called the... Myofibrils - -What are fibres made up of? Sarcomeres - -Myofibrils have many units known as... Myofilaments - -Myofibrils are further divided into... Myosin - -Thick filament in a muscle Actin - -Thin filament in a muscle The sliding filament theory - -How do muscle contractions occur? Isotonic, Isometric, Isokinetic - -3 Types of Muscle Contractions Isotonic - -Muscle length changes through a range of motion or action Concentric - -The muscle length shortens Eccentric - -The muscle length lengthens Isometric - -The muscle length remains unchanged while tension is developed Isokinetic - -The resistance changes according to the joint angle Fusiform - -Name the type of muscle fibre: -long and thin -run the length of the muscle in the same direction as the tendon -produce low force -contract rapidly -there are few of these muscle fibres Penniform - -Name this type of muscle fibres: -run at angles -produce great force -but at slower rate -make up 75% of skeletal muscles -allows considerably more fibres to be packed into a muscle therefore a greater number of fibres contributes to muscle action Unipennate - -Fibres on one side of tendon Binpennate - -Fibres on both sides of tendon Multipennate - -Fibres branch out from a number of tendons Slow Twitch, Fast Twitch - -Two different types of fibres -Type 1 fibres -Red in colour -Best suited to aerobic, endurance work -Contract slowly with less force -Contract for longer periods of time -Increased capacity to use oxygen -Do not fatigue easily - -Major characteristics of Slow Twitch Muscle Fibres (7) -Type 2 fibres -White in colour -Best suited to short duration, high intensity (anaerobic) work