PLTW HUMAN BODY SYSTEMS EVALUATION
EXAM UPDATED QUESTIONS AND ANSWERS
SURE A+
✔✔cardiac tissue - ✔✔Involuntary, straited and branched muscles, circulates, in heart
✔✔skeletal tissue - ✔✔makes up the bones of the body
✔✔Epimysium - ✔✔surrounds entire muscle
✔✔Perimysium - ✔✔Connective tissue surrounding a fascicle
✔✔Endomysium - ✔✔Connective tissue surrounding a muscle fiber
✔✔fascicle - ✔✔bundle of muscle fibers
✔✔muscle fibers - ✔✔long, slender cells that make up muscles
✔✔Insertion - ✔✔attachment to movable bone
✔✔origin - ✔✔attachment of a muscle that remains relatively fixed during muscular
contraction
, ✔✔contract - ✔✔To draw together, to reduce in size
✔✔efferent neurons - ✔✔Nerve cells that conduct impulses away from the central
nervous system
✔✔sliding filament mechanism - ✔✔The explanation of how thick and thin filaments
slide relative to one another during striated muscle contraction to decrease sarcomere
length
✔✔Actin - ✔✔thin filaments
✔✔myosin - ✔✔thick filament
✔✔sarcomere - ✔✔a structural unit of a myofibril in striated muscle, consisting of a dark
band and the nearer half of each adjacent pale band.
✔✔tropmyosin - ✔✔arranged like a ribbon that binds the myosin binding site on the
actin
✔✔troponin - ✔✔A protein of muscle that together with tropomyosin forms a regulatory
protein complex controlling the interaction of actin and myosin and that when combined
with calcium ions permits muscular contraction
✔✔afferent neurons - ✔✔Nerve cells that carry impulses towards the central nervous
system
✔✔carpal tunnel syndrome - ✔✔compression of the median nerve as it passes between
the ligament and the bones and tendons of the wrist
✔✔pulmonary circulation - ✔✔flow of blood from the heart to the lungs and back to the
heart
✔✔ventricle - ✔✔lower chamber of the heart
✔✔aorts - ✔✔biggest artery
✔✔capillaries - ✔✔Microscopic vessel through which exchanges take place between
the blood and cells of the body
✔✔atrium - ✔✔upper chamber of the heart
✔✔valves - ✔✔prevent back flow of blood
EXAM UPDATED QUESTIONS AND ANSWERS
SURE A+
✔✔cardiac tissue - ✔✔Involuntary, straited and branched muscles, circulates, in heart
✔✔skeletal tissue - ✔✔makes up the bones of the body
✔✔Epimysium - ✔✔surrounds entire muscle
✔✔Perimysium - ✔✔Connective tissue surrounding a fascicle
✔✔Endomysium - ✔✔Connective tissue surrounding a muscle fiber
✔✔fascicle - ✔✔bundle of muscle fibers
✔✔muscle fibers - ✔✔long, slender cells that make up muscles
✔✔Insertion - ✔✔attachment to movable bone
✔✔origin - ✔✔attachment of a muscle that remains relatively fixed during muscular
contraction
, ✔✔contract - ✔✔To draw together, to reduce in size
✔✔efferent neurons - ✔✔Nerve cells that conduct impulses away from the central
nervous system
✔✔sliding filament mechanism - ✔✔The explanation of how thick and thin filaments
slide relative to one another during striated muscle contraction to decrease sarcomere
length
✔✔Actin - ✔✔thin filaments
✔✔myosin - ✔✔thick filament
✔✔sarcomere - ✔✔a structural unit of a myofibril in striated muscle, consisting of a dark
band and the nearer half of each adjacent pale band.
✔✔tropmyosin - ✔✔arranged like a ribbon that binds the myosin binding site on the
actin
✔✔troponin - ✔✔A protein of muscle that together with tropomyosin forms a regulatory
protein complex controlling the interaction of actin and myosin and that when combined
with calcium ions permits muscular contraction
✔✔afferent neurons - ✔✔Nerve cells that carry impulses towards the central nervous
system
✔✔carpal tunnel syndrome - ✔✔compression of the median nerve as it passes between
the ligament and the bones and tendons of the wrist
✔✔pulmonary circulation - ✔✔flow of blood from the heart to the lungs and back to the
heart
✔✔ventricle - ✔✔lower chamber of the heart
✔✔aorts - ✔✔biggest artery
✔✔capillaries - ✔✔Microscopic vessel through which exchanges take place between
the blood and cells of the body
✔✔atrium - ✔✔upper chamber of the heart
✔✔valves - ✔✔prevent back flow of blood
