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WorksheetsLesson 4- muscle test
Total questions: 20
Worksheet time: 20mins
A and B muscles allow the dorsiflexion and plantar flexion of this dog's hock joint. During hock DORSIFLEXION, (a) is the antagonist and (b) is the agonist.
A and B muscles allow the dorsiflexion and plantar flexion of this dog's hock joint. During hock PLANTAR FLEXION, (a) is the agonist and (b) is the antagonist.
This is the pectoralis major muscle. Which is the origin?
A
B
This is the pectoralis major muscle. Which is the insertion?
A
B
This is the deltoid muscle. Which is the insertion?
A
B
This is the deltoid muscle. Which is the origin?
A
B
This is the infraspinatus muscle. Which is the origin?
A
B
This is the infraspinatus muscle. Which is the insertion?
A
B
This is a drawing of a generic muscle. Match the following
A
bone
B
tendon
C
belly
D
fascicle
E
muscle fiber
This is a drawing of a generic muscle. Which of the membranes covers which of these lettered structures?
A
periosteum
C
epimysium
D
perimysium
E
endomysium
This a diagram showing a partial view of the muscle fiber. Match the following features with the correct letter
T tubule
E
Z line
I
myosin bundles
G
actin fibers
H
This a diagram showing a partial view of the muscle fiber. Match the following features with the correct letter
sarcolemma
A
synapse/neuromuscular junction
C
motoneuron
B
Acetylcholin vesicle
D
sarcoplasmic reticulum
F
Muscle contraction phase 1: Reorder these events leading to muscle contraction in their chronological order:
Acetylcholine is released from the motoneuron
Depolarization of the sarcolema
Opening of voltage-gated calcium chanels
Calcium exit the sarcoplasmic reticulum
cytosolic Calcium initiate myosin attaching to actin filaments.
Muscle contraction phase 2: Reorder these events leading to muscle contraction in their chronological order:
Calcium is released from sarcoplasmic reticulum into the cytosol of the muscle cell
Calcium binds troponin
Tropomyosin is released from actin filaments
the myosin binding sites are now free to bind to myosin
myosin binds to actin
Reorder these events leading to muscle contraction in their chronological order (some steps may be missing in between):
Calcium is released from sarcoplasmic reticulum into the cytosol of the muscle cell
tropomyosin is released from actin filaments
myosin binds to a site on an actin filament
ATP is hydrolyzed
myosin head advance to the next site in etc. actin filament
Muscle contraction phase 3 : Reorder these events leading to muscle contraction in their chronological order (start with iP release):
inorganic phosphate (iP) is released from the myosin head
myosin head binds strongly to actin and power stroke occurs
ADP is released fro myosin head and and ATP replaces it
Myosin detaches from actin
hydrolysis of ATP into ADP and iP and re-cocking of the myosin lever arm
Which events are necessary for terminating a muscle contraction?
Stop of the release of acetylcholine from the motoneuron
re-uptake or destruction of acetylcholine released earlier
re-uptake of Calcium into the sarcoplasmic reticulum
the troponin-tropomyosin complex attaches to the actin filament
ATP is hydrolyzed
What would happen if you blocked the function of Acetylcholine at the neuromuscular junction?
paralysis
tetanus (on-going contraction of the muscle)
cramp (quick uncontrolled muscles
___are regulatory proteins that cover the myosin binding site on the actin.
troponin-tropomyosin
sarcomere
sarcolemma
sarcoplasmic reticulum
Body builders and Belgian blue & Piedmontese cows acquired the muscle hypertrophy the same way.
true
false
