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WorksheetsNeuromuscular contraction - Runshaw A&P
Total questions: 21
Worksheet time: 11mins
The point at which the nerve cell reaches the muscle fibre of the muscle fiber is the _____.
Neurotransmitter
Acetylcholine
Synaptic cleft
Neuromuscular Junction
The gap between the neuromuscular junction and the muscle fibre is the ____ ___.
Synaptic cleft
Neurotransmitter
Motor unit
Neuromuscular junction
What is the neurotransmitter that stimulates skeletal muscles?
GABA
Acetylcholine
Serotonin
Dopamine
Ca2+ will be released from the sarcoplasmic reticulum when
impulse reaches neuromuscular junction
impulse/acetylcholine carries over into the fibre
ATP binds to sarcoplasmic reticulum
acetyl choline binds to ligand gated ion channels
Ca2+ released by sarcoplasmic reticulum will bind to
Actin
Troponin
Myosin
Tropomyosin
What is another name for an impulse sent from the brain
Action Potential
Signal
Neurotransmitter
Hormone
Sensory nerves do what...
send messages from the senses to the brain
send messages from the muscle to the heart
send messages from the brain to the muscle
process information in the brain
Motor nerves do what...
send messages from the senses to the brain to process
send messages from the muscle to the heart
send messages from the brain to the muscle to move
process information in the brain
What is at point A
I band - decreases upon contraction
Z line - decreases upon contraction
H zone - decreases upon contraction
A band - width of myosin, stays the same
What is at point B
I band - decreases upon contraction
Z line - decreases upon contraction
H zone - decreases upon contraction
A band - width of myosin, stays the same
What is at point C
I band - decreases upon contraction
Z line - decreases upon contraction
H zone - decreases upon contraction
A band - width of myosin, stays the same
What is at point D
I band - decreases upon contraction
Z line - decreases upon contraction
H zone - decreases upon contraction
A band - width of myosin, stays the same
Which enzyme catalyzes the reaction of ATP to help myosin bind to actin
ATP Sythetase
ATPase
ATPose
ADP
Shortening or moving action of a muscle
Concentric
Eccentric
Isometric
Isotonic
Lengthening motion of the muscle under tension/gravity
Concentric
Eccentric
Isometric
Isotonic
No movement in the muscle but it is under tension
Concentric
Eccentric
Isometric
Isotonic
