A positively or negatively charged particle is called a(n) ____________________.?
Fill in the blank(s) with correct word
ion
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Which of these functions are accomplished by the nasal cavities?
A. Mucus produced by the nasal lining traps debris from the air. B. Cilia on the mucous membrane sweep debris into the pharynx. C. he sense of smell D. Air is humidified and warmed. E. All of these are functions of the nasal cavities.
The lateral corticospinal tracts include a ________ of the upper motor neuron axons that pass through the medulla, and they govern control of ___________
A. majority, axial muscles B. majority, muscles used for finely controlled movements C. minority, axial muscles D. minority, muscles used for finely controlled movements
Which of the following occurs during the latent period of muscle contraction?
A) An action potential is generated. B) Calcium is released from the sarcoplasmic reticulum. C) Acetylcholine is released at the axon terminal and an action potential is generated. D) Acetylcholine is released at the axon terminal
Increasing stimulus strength results in an increase in the ______ of action potentials.
A. strength B. frequency