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4 lip 2024 · Nervous system, organized group of cells specialized for the conduction of electrochemical stimuli from sensory receptors. The nervous system allows for the almost instantaneous transmission of electrical impulses from one region of the body to another.
- Active Transport: The Sodium-Potassium Pump
Nervous system - Sodium-Potassium Pump, Active Transport,...
- Arthropods
Nervous system - Arthropods, Reflexes, Sensory: The other...
- Ionic Signals, Neurons, Synapses
Nervous system - Ionic Signals, Neurons, Synapses: Ions are...
- Dopamine
Nervous system - Neurotransmitter, Dopamine, Signaling:...
- Annelids
Nervous system - Annelids, Reflexes, Sensory: The brain of...
- The Nerve Cell
Anatomy of a nerve cell. Structural features of a motor...
- Neurotransmitters, Neuromodulators
Nervous system - Neurotransmitters, Neuromodulators: The...
- Axon
Nervous system - Axon, Signals, Neurotransmitters: The axon...
- Active Transport: The Sodium-Potassium Pump
4 lip 2024 · Anatomy of a nerve cell. Structural features of a motor neuron include the cell body, nerve fibres, and dendrites. With few exceptions, most neurons consist of three distinct regions, as shown in the diagram: (1) the cell body, or soma; (2) the nerve fibre, or axon; and (3) the receiving processes, or dendrites.
19 lip 2024 · The majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. Neurons The cell body is the roughly round part of a neuron that contains the nucleus, mitochondria, and most of the cellular organelles.
11 lip 2024 · central nervous system, system of nerve tissue in vertebrates that consists of the brain and spinal cord. The central nervous system controls both voluntary movements, such as those involved in walking and in speech, and involuntary movements, such as breathing and reflex actions.
19 lip 2024 · The cerebrum is a large, folded mass of nervous tissue that makes up the majority of the human brain. Many ridges of cerebral tissue, called gyri (singular: gyrus), extend from the surface of the cerebrum and are bordered by grooves in the cerebrum.
19 lip 2024 · Anatomy. The spinal cord is a mass of nervous tissue that extends inferiorly from the brain stem through the vertebral canal of the cervical and thoracic regions, ending around the T12 or L1 vertebra. It is a long tube about 18 inches (45 cm) in length and around half an inch (1 cm) in diameter at its widest point.
14 lip 2024 · Anatomy. Function. Associated Conditions. Tests. Surrounding the brain and spinal cord are three layers of protective tissue, collectively called the meninges. Meninges are a necessary cushion between these vital organs and the cranium (or skull) and vertebrae (spine).
