Homework: Chapter 10
BIOL 121 Dr. Anju Singh
83) Why will and individual who lifts weights build larger muscles?
a) skeletal muscles are hyperplasic and respond to stress
b) skeletal muscle myofibrils and cells increase in number
c) skeletal muscles increase number of myofibrils but not number of cells
d) skeletal muscles signal satellite cells to increase number of cells
81) Lidocain inhibits the ion movement required to initiate and conduct impulses on a muscle
cell. What area does lidocaine affect (place your answer in the box below)?
80) The drug dantrolene inhibits release of calcium into the sarcoplasm. Dantrolene affects the
____ _____.
, 79) What is the result of acetylcholine attaching to the ligand gates of the motor end plate?
a) the sarcolemma increases permeability to sodium
b) the positive charge of the sarcolemma decreases
c) calcium ions will be actively transported into the SR
d) calcium voltage gates on the neurolemma are inactive
Which statement explains the sarcomere appearance change during a muscle contraction?
a) The light A bands remain at a constant length.
b) The I bands lengthen.
c) The I bands will only consist of thin filament.
d) The h zone shortens as actin filaments slide towards the m-line.
77) An action potential depolarizes the synaptic end bulb, which causes openings of _____. The
influx of _______ causes exocytosis of _______. The neurotransmitter attaches to _________.
Opening of the channel allows an influx of _____________.
Drop down choices (in correct order)
Acetylcholine
Calcium ions
Ligand gates
Sodium ions
Voltage gates
Voltage gates
BIOL 121 Dr. Anju Singh
83) Why will and individual who lifts weights build larger muscles?
a) skeletal muscles are hyperplasic and respond to stress
b) skeletal muscle myofibrils and cells increase in number
c) skeletal muscles increase number of myofibrils but not number of cells
d) skeletal muscles signal satellite cells to increase number of cells
81) Lidocain inhibits the ion movement required to initiate and conduct impulses on a muscle
cell. What area does lidocaine affect (place your answer in the box below)?
80) The drug dantrolene inhibits release of calcium into the sarcoplasm. Dantrolene affects the
____ _____.
, 79) What is the result of acetylcholine attaching to the ligand gates of the motor end plate?
a) the sarcolemma increases permeability to sodium
b) the positive charge of the sarcolemma decreases
c) calcium ions will be actively transported into the SR
d) calcium voltage gates on the neurolemma are inactive
Which statement explains the sarcomere appearance change during a muscle contraction?
a) The light A bands remain at a constant length.
b) The I bands lengthen.
c) The I bands will only consist of thin filament.
d) The h zone shortens as actin filaments slide towards the m-line.
77) An action potential depolarizes the synaptic end bulb, which causes openings of _____. The
influx of _______ causes exocytosis of _______. The neurotransmitter attaches to _________.
Opening of the channel allows an influx of _____________.
Drop down choices (in correct order)
Acetylcholine
Calcium ions
Ligand gates
Sodium ions
Voltage gates
Voltage gates
