BIOS-252 2026 EXAM STUDY GUIDE
QUESTIONS AND ANSWERS VERIFIED A+
◉Location of skeletal muscle. Answer: in skeletal muscles attached
to bones or occasionally to skin
◉Excitability. Answer: ability to respond to stimuli
◉Conductivity. Answer: The ability of an object to transfer heat or
electricity to another object.
◉Extensibility. Answer: ability to be stretched
◉Elasticity of muscle. Answer: Ability of muscle fibers to recoil and
resume their resting length after being stretched.
◉Contractibility. Answer: ability to shorten/contract
◉Sarcomere. Answer: Contractile unit of muscle (z disc to z disc)
◉Sarcolemma. Answer: muscle cell membrane
,◉sarcoplasmic reticulum (SR). Answer: organelle of the muscle fiber
that stores calcium
◉Z disc. Answer: coin-shaped sheet of proteins that anchors the thin
filaments and connects myofibrils to one another
◉M line. Answer: middle of sarcomere
◉A band. Answer: dark area; extends length of the thick filaments
◉I band. Answer: light band, actin only
◉Zone of Overlap. Answer: where thick and thin filaments overlap
◉Thick filaments. Answer: myosin
◉Thin filaments. Answer: actin
◉contractile proteins in muscle. Answer: actin and myosin
, ◉structural proteins. Answer: proteins that form an organism's
physical attributes
◉regulatory proteins. Answer: tropomyosin and troponin
◉Microfilaments. Answer: Long, thin fibers that function in the
movement and support of the cell
◉Myofibrils. Answer: Microscopic protein filaments that make up
muscle cells.
◉muscle fiber. Answer: muscle cell
◉muscle fassicle. Answer: bundle of muscle fibers
◉Epimysium. Answer: surrounds entire muscle
◉Perimysium. Answer: Connective tissue surrounding a fascicle
◉Endomysium. Answer: Connective tissue surrounding a muscle
fiber
QUESTIONS AND ANSWERS VERIFIED A+
◉Location of skeletal muscle. Answer: in skeletal muscles attached
to bones or occasionally to skin
◉Excitability. Answer: ability to respond to stimuli
◉Conductivity. Answer: The ability of an object to transfer heat or
electricity to another object.
◉Extensibility. Answer: ability to be stretched
◉Elasticity of muscle. Answer: Ability of muscle fibers to recoil and
resume their resting length after being stretched.
◉Contractibility. Answer: ability to shorten/contract
◉Sarcomere. Answer: Contractile unit of muscle (z disc to z disc)
◉Sarcolemma. Answer: muscle cell membrane
,◉sarcoplasmic reticulum (SR). Answer: organelle of the muscle fiber
that stores calcium
◉Z disc. Answer: coin-shaped sheet of proteins that anchors the thin
filaments and connects myofibrils to one another
◉M line. Answer: middle of sarcomere
◉A band. Answer: dark area; extends length of the thick filaments
◉I band. Answer: light band, actin only
◉Zone of Overlap. Answer: where thick and thin filaments overlap
◉Thick filaments. Answer: myosin
◉Thin filaments. Answer: actin
◉contractile proteins in muscle. Answer: actin and myosin
, ◉structural proteins. Answer: proteins that form an organism's
physical attributes
◉regulatory proteins. Answer: tropomyosin and troponin
◉Microfilaments. Answer: Long, thin fibers that function in the
movement and support of the cell
◉Myofibrils. Answer: Microscopic protein filaments that make up
muscle cells.
◉muscle fiber. Answer: muscle cell
◉muscle fassicle. Answer: bundle of muscle fibers
◉Epimysium. Answer: surrounds entire muscle
◉Perimysium. Answer: Connective tissue surrounding a fascicle
◉Endomysium. Answer: Connective tissue surrounding a muscle
fiber
