The nervous system uses electrical signals to transmit information very rapidly to specific cells.A. 对 B. 错查看试卷,进入试卷练习 答案 A解析 暂无解析相关试题 【判断题】 With the level of sodium increasing extracelular fruid. the cardiac muscle cells become too excitable and may contract. A....
As any living organism displays and uses electricity based in diffusion potentials, varying those voltages, electrical signals may be created. The nervous system has developed in multicellular organisms that move actively. It generates fast electrical signals of a digital character in neurons to ...
Electrical signalingMembrane and resting potentialMotor neuronsNervous systemNeuronsNeurotransmitterPatellar reflexSensory neuronsSummary This chapter contains sections titled: The Patellar Reflex as a Model for Neural Function The Cellular Organization of Neurons Electrical Signals in Neurons Transmission between ...
The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. It is essentially the body's electrical wiring. Structurally, the nervous system has two components: the central nervous system and the peripheral n...
electrical and chemical signals that are highly specific. The dynamic nature of responses of various organisms to their extrinsic (external environment) and other intrinsic (homeostatic) factors to ensure their survival depends on the structural and functional integrity of the nervous system. The unique...
The nervous system is a complex network of interconnected excitable cells. These cells, called neurons, are capable of transmitting an electrochemical signal when appropriately stimulated. Normally, a slight negative electrical potential is maintained in the neurons (relative to the outside) and this ...
Central nervous system Peripheral nervous system 1. The processing area of the nervous system 2. Consists of the brain and the spinal cord 3. Detects and sends electrical impulses 4. Receives and interprets signals 5. Sensation of the environment via the sensory receptors ...
messages to each other. This relay is kind of like what happens when your friend whispers a secret in your ear, and then you whisper the same secret in another friend's ear. But, your nerve cells don't use words to share their secrets; instead they use chemicals and electrical signals....
This space is called the synapse. On reaching the other neuron, the signals are converted from chemical to electrical signals. This same process is repeated over and over again across the nervous system. Nervous systems exist in most multicellular animals with sponges, mesozoans, and placozoans ...
organs so that the CNS can regulate the various responses. As part of the regulation process, the CNS initiates electrical signals known as action potentials in the outgoing (efferent) neurons whose nerve endings (known asaxons) terminate on these organs. These efferent neurons are part of the...