QUESTIONS WITH ALL CORRECT ANSWERS.
Chose the muscle named for its action. - ANS.... -Adductor brevis
The ______ promotes hip flexion (thigh flexion) - ANS.... -Iliopsoas
Which of the following is NOT a rotator cuff muscle? - ANS.... -Trapezius
The stern thyroid muscle originates on the ______. - ANS.... -Sternum
Which Ion is responsible for the exocytosis of neurotransmitter-containing
vesicles at the synapse? - ANS.... -Calcium
The effect of acetylcholine can be stimulating or inhibiting. Which of the following
gives the best explanation for why this is so. - ANS.... -Different post synaptic cells
will have different receptors.
Collection of nerve cell bodies in the peripheral nervous system are called _____.
- ANS.... -ganglia
_______ are neuroglia that surround and form myelin sheaths around nerves in
the CNS. - ANS.... -oligodendrocytes
, In what area of the neurons is an action potential initially generated? - ANS.... -
axon hillock
Which of the following channels are responsible for repolarization of a neuron? -
ANS.... -Voltage gated potassium channels
Any drug that blocked voltage-gated potassium channels would cause what
problem? - ANS.... -It would prevent the repolarization phase of an action
potential.
The interior surface of a neurons plasma membrane at resting membrane
potential will have a _____. - ANS.... -Negative charge and contains less sodium
than outside of the cell.
The portion of the nervous system that is composed of visceral motor fibers that
regulate the activity of smooth muscle, cardiac muscle, and glands is called ____. -
ANS.... -autonomic nervous system
Which ion channel opens in response to a change in membrane potential and
participates in the generation and conduction of action potentials? - ANS.... -
Voltage gated Channels
The part of neurons that conduct impulses toward the cell body is called a(n): -
ANS.... -dendrite
Which membrane potential occurs because of the influx of Na+ through
chemically gated (ligand gated) channels in the receptive region of a neuron. -
ANS.... -Excitatory postsynaptic potential