1.Any of the cordlike bundles of fibers made up of neurons through which sensory stimuli and motor impulses pass between the brain or other parts of the central nervous system and the eyes, glands, muscles, and other parts of the body. Nerves form a network of pathways for conducting infor...
Brain cells release neurotransmitters, molecules that carry information from one nerve cell to another across small gaps called synapses. When they arrive at another cell, neurotransmitters cause ion channels to open, which in turn triggers the electrical impulses that pass messages along nerve fibers...
(redirected fromOptic nerves) Thesaurus Medical Encyclopedia Related to Optic nerves:Cranial nerves,Olfactory nerves optic nerve n. Either of the second pair of cranial nerves that arise from the retina and carry visual information to the thalamus and other parts of the brain. ...
Nociceptors send pain messages in electrical impulses along the peripheral nerves, which then travel through the spine and then to the brain. Nociceptor axons are usually unmyelinated, which means that they are slow. Myelin is an insulating sheath that forms around nerves and helps with impulse ...
Thehuman bodyhas two primary types of nerves: the peripheral and the central. The peripheral nerves are located outside thespinal cordand brain. They carry signals about physical sensations to the brain and transmit commands from the brain to the muscles. ...
True or false: The cells of the nervous tissue are all neurons, cells that transmit nerve impulses. CNS nerve fibers regenerate because of the actions of Schwann cells. Is the statement true or false? Nuclei are concentrations of nerve cell bodies in CNS. True False...
What is the function of afferent nerves quizlet? Afferent nervestransmit impulses from the SENSORY receptors in the skin, muscles, and joints to the CNS. Efferent (motor) nerves carry impulses from the CNS out to the muscles and glands. ...
A vein is defined as a vessel that conducts blood from the periphery to the heart. All veins carry deoxygenated blood–except for the pulmonary vein. The largest veins are the superior and inferior vena cava, and both drain directly into the right atrium of the heart. All veins of the sys...
Answer to: In all, there are (blank) pairs of spinal nerves that carry information to and from the spinal cord and the periphery of the body. A. 21...
1. any of the cordlike bundles of fibres that conduct sensory or motor impulses between the brain or spinal cord and another part of the body 2. a large vein in a leaf 3. any of the veins of an insect's wing Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers...