Chamberlain BIOS 252 Exam 1 Comprehensive
|Frequently Most Tested Questions and Verified
Solutions | Get it 100% Accurate | Guarantee
Pass and Reviewed | Latest Exam and Newest
Version| Graded A+
steps of neuromuscular junction
ANSWER:
1. action potential generates release of acetylcholine
2. action potential is generated in sarcolemma of muscle cell and
travels through T tubules
3. sarcoplasmic reticulum releases Ca2+
4. myosin cross bridges can form
steps of sliding filament theory
ANSWER:
1) A sarcomere shortens as a result of the z lines moving closer
together
2) The z lines converge as the result of myosin heads attaching to the
actin filament and asynchronously pulling (power strokes) the actin
filament across the myosin, resulting in shortening of the muscle
fiber.
skeletal muscle
ANSWER:
,A muscle that is attached to the bones of the skeleton and provides
the force that moves the bones.
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
|Frequently Most Tested Questions and Verified
Solutions | Get it 100% Accurate | Guarantee
Pass and Reviewed | Latest Exam and Newest
Version| Graded A+
steps of neuromuscular junction
ANSWER:
1. action potential generates release of acetylcholine
2. action potential is generated in sarcolemma of muscle cell and
travels through T tubules
3. sarcoplasmic reticulum releases Ca2+
4. myosin cross bridges can form
steps of sliding filament theory
ANSWER:
1) A sarcomere shortens as a result of the z lines moving closer
together
2) The z lines converge as the result of myosin heads attaching to the
actin filament and asynchronously pulling (power strokes) the actin
filament across the myosin, resulting in shortening of the muscle
fiber.
skeletal muscle
ANSWER:
,A muscle that is attached to the bones of the skeleton and provides
the force that moves the bones.
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
