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WorksheetsModule 2 Quiz
Total questions: 22
Worksheet time: 12mins
During contraction of a muscle the sarcomere does what?
Explodes
Lengthens
Shortens
Creates Inflammation
What neurotransmitter is released for muscle contraction to take place?
Acetylcholine
Dopamine
Serotonin
Glutamate
What takes place during the cross bridge formation?
Troponin attaches to the M Line
Troponin attaches to Tropomyosin
Myosin attaches to Actin
The sarcomere lengthens
What binds to myosin to detach it from actin?
ADP
ATP
Creatine
Phosphate
When relaxation of the muscle occurs calcium will travel back to be stored in what?
Sarcoplasmic Reticulum (SR)
Sarcolemma
Myofibril
Motor Neuron
During aerobic exercise you have an abundance of what in your muscle cells?
Oxygen
Isotonic
Isometric
Acid
The region of the sarcomere that doesn't change in length and represents overlap of myosin and actin.
I band
Z line
A band
H band
The boundary of each sarcomere is represented by this.
M band
Z line
A motor unit is made up of what?
neuromuscular junction
motor neuron and all muscle fibers connected to it
All Sarcomeres in the Myofibril
All Myofibrils in the sarcolemma
What ion has to bind to Troponin to allow for the cross-bridge mechanism?
Sodium
Calcium
Phosphate
Oxygen
Myoglobin stores what?
Oxygen
Blood
Iron
Carbs
What do you need for an action potential to occur?
Neurotransmitters
Water
Sodium
Muscle tissue
Which of the following is a neuroglial cell found in the PNS?
Oligodendrocyte
Schwann Cell
Astrocyte
Microglia
Which of the following cells helps with the blood brain barrier?
Epindymal
Astrocytes
Satelite Cells
Schwann Cells
An all or none response means that once you hit the threshold....
An action potential is produced
The membrane will be hyperpolarized
Repolarization is occurring
Sodium is entering the cell
White matter in the nervous system indicates
Brain tissue
Nodes of Ranvier
Myelination
CNS only
Movement of an impulse from one node of ranvier to the next is considered what?
Saltatory Conduction
Stimulus movement
Found in Gray Matter only
The polarity found in a resting membrane is
More negative inside then outside the cell
More positive inside then outside the cell
More K+ outside the cell
More Na+ in the cell
Opening the voltage gated ion channels at the trigger zone results in what?
Na+ flooding in
K+ flooding in
No change in ions
Repolorization
Depolarization
When an inhibitory postsynaptic potential is affecting the cell membrane it is thought to be in
Hyperpolarization
Depolarization
Action potential
Repolarization
An action potential occurs when ...
EPSP's overpower IPSP's
IPSP's overpower EPSP's
the threshold is met
during hyperpolarization
Which of the following describes the order of an action potential graph.
hyperpolarization, resting state, repolarization, depolarization
resting state, depolarization, threshold met, action potential, repolarization, hyperpolarization
repolarization, hyperpolarization, depolarization
depolarization, hyperpolarization, repolarization, resting state
