Gray matter and white matter are the two types of brain matter found in the central nervous system. Gray matter contains nerves that are and white matter contains nerves that are O Unmyelinated , Unmyelinated O Myelinated , Unmyelinated O Myelinated, Myelinated O Unmyelinated , Myelinated

What two features characterize a Schwann cell, but not an oligodendrocyte?     open cytoplasmic channels, present in CNS     open cytoplasmic channels, single axon myelination     no cytoplasmic channels, present in PNS     no nuclei, multiple axon myelination

Which of the following are adrenergic fibers? O most parasympathetic postganglionic axons most parasympathetic preganglionic axons O most sypathetic, postganglionic axons O most sympathetic preganglionic axons

An area of the body that provides afferent, sensory efferent You are correct PNS You are incorrect ✓ X You are correct information to the CNS and receives motor information from the CNS is called a

"After an action potential has just passed through the axon hillock, the voltage-gated Na+ channels there won t open for a period of time. However, if the stimulus is strong enough, another action potential can be triggered even during this resting time. This refers to"     refractory resting period     intermediate resting period     relative refractory period     absolute refractory period

Describe how neurons communicate. To do this you must address: resting membrane potential; graded potentials; IPSPs; EPSPs; the role of sodium, potassium and calcium; generation of an action potential; inotropic vs metabutropic receptors; why is an AP only one direction; how are neurotransmitters released; continuous vs saltatory conduction; spatial vs temporal summation.

One to one match:  1- visceral nociception system 2- somatic nociception system 3- both visceral and somatic neuron system 4- neither visceral ans somatic neuron (   ) will match to D- Can be partially relieved by taking no-steroidal anti-inflammatory drugs. (   ) will match to E- Descriebed as being shocking or tingling. (   ) will match to F- .Consciousness is achieved by multiple brain area known as the pain neromatix.

Why is the term visceral sometimes used to describe certainparts of the sensory and motor nervous systems?

refers to the ability of neurons to respond to different stimuli. excitability secretion conductivity elasticity OO00

In the glial cell what maintains the ionic environment of the brain?