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Evangeline Abucay
Physiology Wks. 7-13
Question | Answer |
---|---|
Which of the following combinations in aterial blood could cause an increase in the respiratory rate? | Increased PCO2, decreased arterial pressure, decreased pH, decreased PO2 |
Which of the following is not a regulated process associated with the functioning of the respiratory system? | Control of cell metabolism rate |
In depolarization the membrane potential moves toward zero, whereas in hyperpolarization the membrane potential moves away from zero. | True |
Which membrane receptor acts to directly change ion permeability when stimulated? | Gated-channel receptor |
A synapse can occur only between an axon and: any of the above. another axon. a cell body. a dendrite. | Any of the above. |
The difference between sodium and potassium in the generation of action potential is that: | Sodium causes depolarization of the cell membrane, and potassium causes repolarization of the cell membrane |
Which is true of a neuron with a resting potential? | The sodium pump has moved Na+ to the outside of the plasma membrane. |
Stimulus-gated channels open in response to: | Sensory stimuli |
The magnitude of the action potential peaks when the sodium channels close | True |
Another name for the parasympathetic nervous system is the _________ nervous system. | Craniosacral |
The speed of a nerve impulse depends on the neuron's resting potential. | False |
Which of the following is NOT correct? The cell bodies of sympathetic preganglionic neurons are located in the lateral gray column of certain parts of the spinal cord. Sympathetic responses are usually widespread, involving many organs. There ar | Sympathetic preganglionic axons pass along the dorsal root of certain spinal nerves. |