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Physiology Week 7
| Question | Answer |
|---|---|
| Two divisions of nervous system | central nervous systerm, peripheral nervous systerm |
| Schwann cells | long axons are generally myelinated with schwann cells in the pns |
| How are neurons classified? | direction of impulse conduction, the number of cytoplasmic processes, and the are of innervation |
| The membrane potential maintained by a nonconducting neuron’s plasma membrane is called the _____ membrane potential. | Resting |
| Movement of the membrane potential away from zero (below the usual RMP) is called | Hyperpolarization |
| There are two types of synapses—the electrical synapse and the __________ synapse. | Chemical |
| The active transport mechanism in the plasma membrane that transports sodium and potassium ions in opposite directions and at different rates is the | sodium-potassium pump |
| An ion channel that opens in response to a sensory stimulus is a(n) | stimulus-gated channel. |
| Motor unit | a single motor neuron and the muscle fibers it innervaes |
| myoneural junction | junction of motor neuron and muscle; it loses its myelin sheath and divides into a number of terminal buttons or end-feet |
| three types of muscle tissue | smooth, cardiac, skeletal |
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