HUBS 191 Progress Test 1 | 100% Correct Answers | Verified | Latest 2024 Version

What makes up the axial skeleton? - skull, vertebral column, rib cage What is recruitment? - activating more motor units to make more force What are flat bones? - Thin plates of compact bone - some cancellous What are flat bones used for? - protection and muscle attachment What are irregular bones? - Variable in shape size and function What is depolarisation? - Membrane potential becomes less negative what causes depolarisation? - Na+ enters the cell What are the features of the saddle joint? - - biaxial - flexion and extension - abduction and adduction - circumduction - opposition - e.g. carpometacarpal joint (thumb) What does skeletal muscle do? - - develop force - control posture - resist movement of joints - under voluntary control - provide support and protection for soft internal organs- voluntary control over major openings - converts energy (in part) to heat to maintain core temperature - provide a major store for energy and protein What is membrane potential typical value? - -70mV What maintains the membrane potential? - sodium potassium pump what does a neutraliser muscle do? - eliminate an unwanted movement caused by another muscle What is hypotonic? what does it cause? - too much water in ECF causes cell to swell what is a continuous variable? - a variable that can take on any value where is the pubis located? - anterior aspect of the pelvic girdle articulates with the other pubis to form the pubic symphysis what is the structure of fibrocartilage? - collagen fibres form bundles throughout matrix orientation of fibres align with stresses function is to resist compression and tension what is plantar flexion? - toes pointing to the ground how is contraction of a muscle terminated? - Ca2+ levels fall in sarcoplasm what is a categorical variable? - can summarise variables into categories or groups what is inversion of the foot? - sole of foot faces towards midline