Those that transmit impulses from the visceral organs are called visceral sensory fibers. Functional classification groups neurons according to the direction the nerve impulse is traveling relative to the CNS; on this basis, there are sensory, motor, and association neurons.
It then effects a response by activating muscles or glands effectors via motor output. Axons from one neuron can synapse with the dendrites or soma of another axon. The speech area is located at the junction of the temporal, parietal, and occipital lobes; the speech area allows one to sound out words.
The one below it is the pia mater soft mother that adheres to the surface of the brain and spinal cord. Like the president, the brain has its own secret service squadron.
These terminals contain hundreds of tiny vesicles, or membranous sacs that contain neurotransmitters. The cell body is the metabolic center of the neuron; it has a transparent nucleus with a conspicuous nucleolus; the rough ER, called Nissl substance, and neurofibrils are particularly abundant in the cell body.
Neurons Neurons, also called nerve cells, are highly specialized to transmit messages nerve impulses from one part of the body to another.
Other fissures or sulci divide each hemisphere into a number of lobes, named for the cranial bones that lie over them. These synapses are always excitatory or inhibitory.
The sympathetic nervous system SNS generally speeds up everything except digestion. Diencephalon The diencephalon, or interbrain, sits atop the brain stem and is enclosed by the cerebral hemispheres.
The limbic system is a group of structures that includes the amygdala, the hippocampus, mammillary bodies and cingulate gyrus. In the central nervous system, a collection of axons is called a tract.
All the chemicals can easily diffuse across the capillary walls. Structural classification is based on the number of processes extending from the cell body. A structure important for movement and balance is the cerebellum. Advantages of the chemical synapse: The autonomic nervous system ANS consists two divisions, each innervating the effector organs.
In the peripheral nervous system, collections of neurons are called ganglia. The sensory, or afferent division, consists of nerves composed of nerve fibers that convey impulses to the central nervous system from sensory receptors located in various parts of the body.
The Latin word meaning "bark" of a tree is used for the area of the brain called the cortex. When we talk about a nerve, think of it like a telephone cable. Microglia are small phagocytes that swallow up bacteria and viruses that are in the CNS. One very large fiber tract, the corpus callosum, connect the cerbral hemispheres; such fiber tracts are called commisures.
They form a myelin sheath around nerve fibers.Study Flashcards On 7 - Nervous system 2: Anatomy review at mint-body.com Quickly memorize the terms, phrases and much more.
mint-body.com makes it easy to get the grade you want! The Nervous System II: Anatomy Review 1. The somatic nervous system stimulates _____ muscle.
The autonomic nervous system stimulates _____ muscle, _____ muscle, and _____. 2. The autonomic nervous system (ANS) consists two divisions, each innervating the effector organs.
The sympathetic nervous system (SNS) generally speeds up everything except digestion. 1. The somatic nervous system stimulates _____ muscle. The autonomic nervous system stimulates _____ muscle, _____ muscle, and _____.
2. The autonomic nervous system (ANS) consists two divisions, each innervating the effector organs. The sympathetic nervous system (SNS) generally speeds up everything except digestion.
Relevant Anatomy Post: Review the Fundamentals of the Nervous System and Nervous Tissue Not all the cells of the nervous system are nerves. So-called glial cells of the CNS account for over half the cells in your brain. Textbooks usually identify 6 different types of glial cells.
We’re going to review 3 of them. 1. Start studying The Nervous System II: Anatomy Review. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Major Organs and Divisions of the Nervous System; explained beautifully in an illustrated and interactive way.
Multipolar Neurons – Structure and Functions An interactive tutorial about the multipolar neurons structure, function, and location featuring the beautiful GBS illustrations and animations.Download