Chapter 10 Quiz Bio 250 With Solved
Solutions.
which of the following statements is INCORRECT?
a) the contractions of skeletal muscles pull on tendons and move elements of the skeleton
b) skeletal muscles are responsible for guarding the openings of the digestive and urinary tracts
c) skeletal muscles are responsible for pumping action of the heart
d) skeletal muscles support the weight of some internal organs
e) skeletal muscle contractions help maintain body temperature - Answer C) Skeletal muscles
are responsible for the pumping action of the heart.
the dense layer of connective tissue that surround an entire skeletal muscle is the:
a) tendon
b) epimysium
c) endomysium
d) perimysium
e) fascicle - Answer b) epimysium
the bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is
called a(n):
a) fascicle
b) tendon
c) ligament
d) epimysium
e) myofibril - Answer b) tendon
the cell membrane of skeletal muscle is called the:
a) sarcolemma
b) sarcomere
c) sarcosome
d) sarcoplasmic reticulum
e) sarcoplasm - Answer a) sarcolemma
the cytoplasm of a skeletal muscle fiber is called the:
a) sarcolemma
, b) sarcomere
c) sarcosome
d) sarcoplasmic reticulum
e) sarcoplasm - Answer e) sarcoplasm
the command to contract is distributed into the depth of a muscle fiber by the:
a) sarcolemma
b) sarcomere
c) transverse tubules (t-tubules)
d) myotubules
e) myofibrils - Answer c) transverse tubules (t-tubules)
the series of membranous channels that surround each myofibril is the:
a) sarcolemma
b) sarcoplasmic retibulum
c) myolemma
d) sarcoplasm
e) transverse tubules - Answer b) sarcoplasmic retibulum
the functional unit of a skeletal muscle fiber is the:
a) sarcolemma
b) sarcomere
c) sarcoplasmic reticulum
d) myofibril
e) myofilament - Answer b) sarcomere
interactions between actin and myosin filaments of the sarcomere are responsible for:
a) muscle fatigue
b) the conduction of neural information to the muscle fiber
c) muscle contraction
d) muscle relaxation
e) the striped appearance of skeletal muscle - Answer c) muscle contraction
thin filaments at either end of the sarcomere are attached to the:
a) Z line
Solutions.
which of the following statements is INCORRECT?
a) the contractions of skeletal muscles pull on tendons and move elements of the skeleton
b) skeletal muscles are responsible for guarding the openings of the digestive and urinary tracts
c) skeletal muscles are responsible for pumping action of the heart
d) skeletal muscles support the weight of some internal organs
e) skeletal muscle contractions help maintain body temperature - Answer C) Skeletal muscles
are responsible for the pumping action of the heart.
the dense layer of connective tissue that surround an entire skeletal muscle is the:
a) tendon
b) epimysium
c) endomysium
d) perimysium
e) fascicle - Answer b) epimysium
the bundle of collagen fibers at the end of a skeletal muscle that attaches the muscle to bone is
called a(n):
a) fascicle
b) tendon
c) ligament
d) epimysium
e) myofibril - Answer b) tendon
the cell membrane of skeletal muscle is called the:
a) sarcolemma
b) sarcomere
c) sarcosome
d) sarcoplasmic reticulum
e) sarcoplasm - Answer a) sarcolemma
the cytoplasm of a skeletal muscle fiber is called the:
a) sarcolemma
, b) sarcomere
c) sarcosome
d) sarcoplasmic reticulum
e) sarcoplasm - Answer e) sarcoplasm
the command to contract is distributed into the depth of a muscle fiber by the:
a) sarcolemma
b) sarcomere
c) transverse tubules (t-tubules)
d) myotubules
e) myofibrils - Answer c) transverse tubules (t-tubules)
the series of membranous channels that surround each myofibril is the:
a) sarcolemma
b) sarcoplasmic retibulum
c) myolemma
d) sarcoplasm
e) transverse tubules - Answer b) sarcoplasmic retibulum
the functional unit of a skeletal muscle fiber is the:
a) sarcolemma
b) sarcomere
c) sarcoplasmic reticulum
d) myofibril
e) myofilament - Answer b) sarcomere
interactions between actin and myosin filaments of the sarcomere are responsible for:
a) muscle fatigue
b) the conduction of neural information to the muscle fiber
c) muscle contraction
d) muscle relaxation
e) the striped appearance of skeletal muscle - Answer c) muscle contraction
thin filaments at either end of the sarcomere are attached to the:
a) Z line
