Final Exam Flashcards
actin
thin filament (I band) in the sliding filament model
aerobic system
energy system, long term, running, need air for this system
av O2 (oxygen) difference
arterial venous oygen difference, what the muscles use to perform work
biceps (brachii)
flexion of the forearm, antagonist of extension of the forearm
cardiac output
heart rate multiplied by blood pressue
concentric contraction
muscles shorten with force (bicep curl)
deltoids
abduct the shoulder (horizontal and frontal)
diarthodial joint
joint with TWO actions (the knee)
diastole
a chamber of the heart filling with blood, relaxation
eccentric contraction
muscles elongate with force
extension
opposite of flexion; return to anatomical position
flexion
decrease in range of motion (ROM); bending movement around a joint or limb that decreases the angle between bones
gluteus maximus
extension of hip/thigh
glycolytic
energy system; moderate power/short (moderate) duration, next in line after the ATP-PC system runs its course
hamstrings
vastus medialus, vastus lateralus, and semitendinousus; knee flexion and hip extension
isometric contraction
no movement in muscle when force is exerted
lactate threshold
lactic acid (the by product of muscle exertion), tolerance for lactic acid
latissimus dorsi
back muscles (on the side), worked on by pulloever exercises and this muscle is the secondary muscle for most exercises
left atrium
chamber of the heart, the top of the left side, blood leaves here, goes through mitral valve and then into left ventricle
left ventricle
chamber of the heart, bottom of left side, blood leaves here, goes through the aeortic valve and then into the aeorta
mitral valve
also called the bicuspid valve; prevents backflow into left atria
motor unit
nerve fibers and muscle fibers it innervates; muscle
myosin
the thick filament in the sliding filament model
oxidative
with oxygen
