Anatomy & Physiology - Nervous System/CNS - Pt. 1
For all you Medical gurus out there (and even Massage Therapists!)
Trivia on the Human Body
The _______ are nerve cells that conduct impulses, the _______ are the specialized connective tissue cells.
Put the following cell parts in order of their function (i.e. part, its function, part, its function...)
Fatty insulator of the Neuroglia
Nodes of Ranvier
Help speed the nerve impulses
Extensions of the cytoplasm that carry signals to cell body
Elongated projection that carries signals away from cell body
Use your mouse to drag and drop the answers above into the correct order
Generally, when a neuron is at rest, the outside of its cell membrane is ________ charged with _________, and the inside of the cell membrane is ________ charged with _________.
Positively / Sodium, Negatively / Potassium
Positively / Potassium, Negatively / Sodium
Negatively / Sodium, Positively / Potassium
Negatively / Potassium, Positively / Sodium
When a stimulus results in a brief change in the charge of one segment of the neuron, it is called ________________.
When the external positive and internal negative differences of the membrane are present, it is called...
When the outside segment of the membrane becomes negatively charged as it depolarizes and the inside becomes positively charged, it is called ____________.
Repolarization is the process that reverses nerve impulse charges while the previous segment returns to its original polarity.
____________ period is a when a neuron recovers.
___________ are the spaces or junctions between two neurons or a neuron and effector organ, while ____________ are chemical compounds contained within sacs of the end of an axon.
Neurons, Nerve cells
Excited is what is used to describe the __________ as it switches charges with the action potential.
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