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GMS-NervoSys8TestRev
GMS-NervousSystemCh8TestReview
| Question | Answer |
|---|---|
| Name the division of the nervous system that controls skeletal muscles. | Somatic Nervous System |
| What structures are part of the peripheral nervous system(PNS)? | Cranial & Spinal Nerves |
| Name the fibers that conduct impulses TOWARD a cell body. | Dendrite |
| Name the fibers that conduct impulses AWAY from a cell body. | Axons |
| What two structures receive impulses from Afferent Neurons? | Brain & Spinal Cord |
| What kind of nerve only contains Efferent fibers? | Motor Nerve |
| Name the membrane that surrounds the entire nerve. | Epineurium |
| Define Ganglion. | Collection of nerve cell bodies outside the CNS |
| Give examples of Neuroglia. | Schwann (PNS), Astrocyte (CNS) |
| Before the start of Action Potential, the neuron membrane is at __________. | rest |
| Which channels open late in the action potential to cause membrane Repolarization? | Potassium Channels |
| The myelin sheath has different layers. What is the outermost layer called,which aids in regeneration of PNS neurons? | Neurolemma |
| Neurotrasmitters bind to _______ What protein sites are on the Postsynaptic Membrane? | receptor |
| Examples of Neurotransmitters | Ephinephine, Norepinephrine, Acetylcholine, Adrenaline |
| What is in the Central Canal of the spinal cord? | Cerebrospinal Fluid |
| List the order of impulse conductions thru a reflex are: | Receptor>Sensoryneuron> CNS(Interneuron)>Motor Neuron>Effector |
| True or False: The Brachial Plexus supplies motor impulses to the muscles of the shoulder. | True |
| Which Plexus gives rise to the phrenic nerve? | Cervical Plexus |
| The sympathetic motor neurons originate from cell bodies in the ________&_________ regions of the spinal cord. | Thoracic & Lumbar |
| What structures are in the central nervous system (CNS)? | brain & spinal cord |
| What is the scientific name for the nerve cell? | Neuron |
| What does the Myelin Sheath do for impulse conduction? | Speeds rate up |
| During Depolarization, Ions of what element enter the neuron through channels? | Sodium |
| Define: Synapse | Point of junction btw (2 cells), nerve cell and another cell. |
| What color is myelinated nervous tissue? | white |
| How many pair of spinal nerves are there? | 31 |
| Name the plexus that serves the legs and pelvis: | Lumbar Sacral |
| What does the word part "Lemma" means | sheath |
| Role of the Nervous System is: | Detects,Responds to changes, Organizes&Interprets Information |
| Neuroglia is a Non-conducting Glia cell of connective tissue that supports, nourishes,protects and insulates. | CNS Neuroglia: Astrosytes, Ependymocytes, Microglia,&Oligodendrytes. PNS Neuroglia: Schwann,Neurolemma, Myelinated Axons< white fibers |
| Nerve fibers are in the PNS.What are the fibers called in the CNS? | Tracts |
| Motor Neurons conduct impules _________ the CNS to muscles and glands. | AWAY(from) |
| Sensory Neurons conduct impuses ________ the brain and spinal cord(CNS). | Toward(to) |
| What is a spinal nerve with both sensory & motor fibers? | mixed |
| Which part of the Nervous System speeds up the heart? | Sympathetic "fight or flight" |
| What color of matter are dorsal & ventral horns of the spinal cord? | gray |
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