Fichas
The Nervous system
Fichas del conjunto (30)
- 1Nervous system (function)Monitors the body's internal and external environments. Integrates sensory information. coordinates voluntary and involuntary responses of other organ systems.
- 2Nervous systemMonitors the body's internal and external environment. Integrates sensory information. Coordinates voluntary and involuntary responses of many other organ systems.
- 3CNS (central nervous system)Brain and Spinal cord-
integrates and coordinates the processing of sensory data and the transmission of motor commands. (intelligence, memory, emotion) - 4PNS (Peripheral nervous system)All the neural tissue outside the CNS
(check the overview of CNS and PNS relationship) - 5Efferent division/ Afferent divisionA-sensory information is carried to the PNS.
E-CNS sends motor commands to the PNS to muscles and glands. - 6Somatic Nervous system (an efferent division of the PNS)Provides control over skeletal muscle
- 7Autonomic nervous system (visceral motor system)provides automatic involuntary regulation of smooth muscle, cardiac muscle, and glandular secretions
- 8ANS (sympathetic division and parasympathetic)ANS- provides automatic involuntary regulation of smooth muscle, cardiac muscle, and glandular secretions
- 9Sympathetic divisionaccelerate the heart
- 10parasympathetic divisionslows the heart
- 11Neuronthe basic unit of the nervous system involves communications of neurons with other cells
- 12neurogliaregulate the environment around neurons, provide a supporting framework for neural tissues, and act as phagocytes. (also called glial cells and outnumber neurons)
- 13Representative neuronhas- a cell body, several dendrites, axon terminals,
- 14—neuron
- 15Multipolar neuronhas two or more dendrites and a single axon (most common) control skeletal muscles
- 16unipolar neurondendrites and axons are continuous, cell body lies off to one side. Action potential begins at the base of the dendrites and the rest of the process is an axon; Sensory neurons of the peripheral nervous system
- 17Bipolar neuronhave two processes- one dendrite and one axon with a cell body between them; occur in special sense organs, relay information like sight, smell, hearing receptors.
- 18Sensory neuron (afferent)10 million, received information from sensory receptors that were monitoring the external and internal environments and then relayed information to other neurons.
- 19External receptors (somatic sensory receptors)provide information about the external environment by touch, temperature, and pressure sensations, more complex taste sight equilibrium, and hearing.
- 20Proprioceptors (somatic sensory receptors)monitor the position and movement of skeletal muscles and joints
- 21Visceral/ internal receptorsmonitor the activities of the digestive, respiratory, cardiovascular, urinary, and reproductive systems; distention deep pressure and pain.
- 22Motor neurons (efferent)carry instructions from the CNS to other organs, organ system
- 23Somatic/visceral motor neuronsS- nervate skeletal muscles V-innervate all other effectors
- 24Interneurons (association)brain and spinal cord, distribute sensory information, and coordination of motor activity.
- 25Astrocytes (neuroglia) CNSsecretes chemicals that maintain the blood-brain barrier
- 26Oligodendrocytes (neuroglia) CNSmyelin; serves as electrical insulation and increases speed at which an action potential travels along the axon
- 27microglia (neuroglia) CNSderived from white blood cells that migrate into the CNS, engulf cellular waste and pathogens.
- 28Ependymal (neuroglia) CNSline the central canal of the spinal cord and the ventricles of the brain.
- 29graded potentialchanges in the membrane potential that cannot spread far from the site of stimulation.
- 30action potentialpropagated change in the membrane potential of the entire plasma membrane
Información
- Descripción
- The anatomical structure of the Neuron, axon, CNS, PNS
- Creado por
- Frida Macedo [STUDENT]
- Visitas
- 44
- Valoración