muslce and nervous system review

which of the following are functions of muscle? select all that apply

• regulate elimination of materials

• protect and support

• maintain posture

• move the body

• produce heat

which of the following are characteristics of skeletal muscle? select all that apply

• excitability

• conductivity

• contractility

• extensibillity

• elasticity

the connective tissue layer around a single muscle cell is called

• epimysium

• perimysium

• endomysium

• aponeurosis

the epimysium, perimysium, and endomysium extend past the muscle fiber to form a ​ ___​ , a thick cordlike struture composed of dense regular connective tissue that connect muscle to bone

• tendon

• ligament

• sarcomere

• fascicle

the ____ is the plasma membrane of a muscle cell and it is specialized for generating action potentials

• sarcolemma

• T tubule

• sarcomplasmic reticulum

• triad

the ____ are extensions of the sarcolemma that ensure the action potentials reach the deepest parts of the muscle cell

• sarcolemma

• T tubule

• sarcomplasmic reticulum

• triad

the ____ stores calcium and regulates calcium levels in the muscle cell

• sarcolemma

• T tubule

• sarcomplasmic reticulum

• triad

thick myofilaments are composed of

• myosin

• actin

• troponin

• tropomyosin

thin myofilaments are composed of select all that apply

• myosin

• actin

• troponin

• tropomyosin

the ____ is the organelle that contracts in the muscle cell

• sarcolemma

• T tubule

• myofibril

• sarcomplasmic reticulum