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Anatomy
activity week 7
| Question | Answer |
|---|---|
| Which of these glia cells are located in the peripheral nervous system? | Schwann cells |
| Identify which letter represents an oligodendrocyte. | E |
| Chemical signals diffuse between neurons at this location. | synapse |
| Identify the letter that indicates the gaps between Schwann cells that are known as myelin sheath gaps (nodes of Ranvier). | D |
| The ________ of a presynaptic neuron associates with the dendrite of a postsynaptic neuron. | axon terminal |
| What structure of the Schwann cell is essential to normal nerve growth and the regeneration of injured nerve fibers? | neurilemma |
| Identify which diagram represents a microglial cell. | C |
| The somatic nervous system carries information to the | skeletal muscles. |
| The _____ of a neuron is a single process that usually extends from a tapered portion of the cell body. | axon |
| Identify the letter that indicates the region of a neuron with a name that means "little hill." | B |
| Excitable cells that conduct the impulses are called | neurons |
| Identify which letter represents the most abundant category of glial cells in the CNS. | B |
| Nerves that originate from the brain are called _____ nerves. | cranial |
| The structural and functional center of the entire nervous system is the _____ nervous system. | central |
| A signal conduction route to and from the central nervous system is a(n) | reflex arc. |
| Identify which diagram represents a cell that produces a myelin sheath in the central nervous system. | E |
| These regions of the neuron direct electrical currents toward the cell body. | dendrite |
| The glia cells that help form the blood-brain barrier are the | astrocytes |
| Neurons have | very limited capacity to repair themselves. |
| Axodendritic synapses occur between letter "E" on the diagram and this region on a proximal neuron. | A |
| Identify which diagram represents cells that produce and circulate cerebrospinal fluid. | D |
| Identify the letter that indicates the region of a neuron where neurotransmitters are released. | E |
| This tends to be the longest cytoplasmic projection from a neuron. | AXON |
| Identify the letter that indicates a Schwann cell. | C |
| Bundles of myelinated fibers make up the | white matter of the nervous system. |
| What term describes the bundles of nerve fibers within the central nervous system? | tracts |
| This is the site of communication between neurons. | synapse |
| The _____ nervous system is a complex network of nerve pathways embedded in the intestinal wall with a network of integrators and feedback loops that can act somewhat independently. | enteric |
| Which of the following is not a structural classification of neurons? | polar |
| The efferent pathways of the autonomic nervous system can be divided into the __________ divisions. | parasympathetic and sympathetic |
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dljsapp
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