Ib sehs topic 4 Study guides, Class notes & Summaries

IB SEHS Topic 4

IB SEHS Topic 4 Exam Studyguide ...

IB SEHS Topic 4 Verified Solutions Myofibril ️One of the slender threads of a muscle fiber, composed of numerous myofilaments Myofilament ️Myofibrils are made up of even smaller threadlike structures Actin Filament and Myosin Filament ️Two protein sites responsible for movement Sarcomere ️Is the basic unit of a muscle and is the part of the muscle that contracts H Zone ️The region of the sarcomere that contains only thick myofilaments I Band ️From the end of the Myosin to...

IB SEHS Topic 1 Anatomy Verified Solutions Axial skeleton consists of those parts near the skeletal axis, skull, vertebral column, the ribs and sternum Appendicular skeleton consists of upper and lower extremities, pelvic girdle (illium, ischium and pubis) and the pectoral girdle (scapula and clavicle) Axial function protection Appendicular function movement and attachment 4 types of bone long bone, short bone, flat bone, irregular bone long bone epiphysis, diaphysis, artic...

Topic 6 IB SEHS Complete Solutions Standard Deviation ️spread of scores around the mean or average Error Bars ️are a graphical representation of the variability of the data, depict standard deviation Normal Distribution ️when 68% of all values are between +/- 1.0 standard deviation and 95% lie between +/- 2.0 Coefficient of Variation ️the ratio of the standard deviation to the mean expressed by a percentage T-test ️inferential statistical test- p value must be <5% Pair...

IB SEHS - Topic 5.2 Already Graded A Exteroceptors ️Provide information about the external environment. Exteroceptors involved in sensation with regard to sport are vision and audition. Proprioceptors ️Proprioception means "sense of self". In the limbs, the proprioceptors are sensors that provide information about joint angle, muscle length, and muscle tension, which is integrated to give information about the position of the limb in space. Interoceptors ️Provide information ...

IB SEHS Topic 2 Study Guide Verified Solutions List the pathway of blood in your heart ️1) Superior vena cava 2) Inferior Vena cava 3) Right atrium 4) Tricuspid valve 5) right ventricle 6) pulmonary artery 7) lung cappilaries 8) pulmonary vein 9) left atrium 10) mitral valve 11) left ventricle 12) aorta Describe what happens when you inhale: ️ribs push outward and diaphragm downward to make the chest cavity larger so the lungs can inflate; the pressure around the ...