NettetNerve fibers or axons are a part of the nervous system which receives environmental signals and produce a response. For response, the nervous system uses nerve fibers … NettetThe insulation for axons in the nervous system is provided by glial cells, oligodendrocytes in the CNS, and Schwann cells in the PNS. Whereas the manner in which either cell is associated with the axon segment, or segments, that it insulates is different, the means of myelinating an axon segment is mostly the same in the two situations.
Chapter 14 Flashcards Quizlet
Nettet7. sep. 2024 · The PNS is composed of nerves that are responsible for carrying signals between the central nervous system and the parts of the body that lie outside the CNS. This includes information from the senses, organs, and muscles. The axons of these nerve cells are bundled together and can be found throughout the body. Nettet8. mai 2024 · Schwann cells embryologically derive from the neural crest. They myelinate peripheral nerves and serve as the primary glial cells of the peripheral nervous system (PNS), insulating and providing nutrients to … hudson\\u0027s brewhouse
Peripheral nervous system: Anatomy, divisions, …
NettetThe PNS contains. a. 12 pairs of cranial nerves only. b. 31 pairs of spinal nerves only. c. 12 pairs of cranial nerves and 31 pairs of spinal nerves. d. 43 pairs of spinal nerves. … Nettet16. jun. 2024 · Neurons are specialized cells that are capable of sending electrical as well as chemical signals. Most neurons contain dendrites, which receive these signals, and axons that send signals to other neurons or tissues. There are four main types of neurons: unipolar, bipolar, multipolar, and pseudounipolar neurons. Nettet7. mai 2024 · Its function is to produce the myelin sheath that insulates axons in the peripheral nervous system. In the central nervous system, a different type of glial cell, called an oligodendrocyte, produces the myelin sheath. Neurogenesis Fully differentiated neurons, with all their special structures, cannot divide and form new daughter neurons. hudson\u0027s bow gift wrap