The axon of a nerve cell is responsible for transmitting information over a relatively long distance, and so most neural pathways are made up of axons. For example, motor neurons, which travel from the spinal cord to the muscle, can have axons up to a meter in length in humans.
What is an axon simple definition?
axon, also called nerve fibre, portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells.
What is a axon and its function?
Each neuron in your brain has one long cable that snakes away from the main part of the cell. This cable, several times thinner than a human hair, is called an axon, and it is where electrical impulses from the neuron travel away to be received by other neurons.
What is an axon in psychology quizlet?
Axon. An axon is a long fiber that carries outgoing messages from a cell and axon groups are bundled together from a nerve or tract. Action potential. Action potential is part of neuron communication and its when an axon is sending a message.
What is an example of axon in psychology? – Related Questions
What is the function of axons quizlet?
A threadlike extension of a neuron that carries nerve impulses away from the cell body. A layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly greater transmission speed of neural impulses as the impulse hops from one node to the next.
What is the function of the axon in a neuron quizlet?
Axons: Conduct nerve impulses away from the cell body towards: the dendrites or cell body of another neuron or an effector (muscle or gland).
What is a neuron psychology quizlet?
Neuron. A nerve cell; the basic building block of the nervous system. Dendrite. A neuron’s bushy, branching extensions that receive messages and conduct impulses toward the cell body.
What is axon terminals psychology?
An Axon Terminal is the very end of a branch of a nerve’s axon, a long slender nerve fiber that conducts electrical signals to a nerve synapse (the gap between nerve cells). The signal then moves across the synapse to another axon by means of a neurotransmitter (an electrochemical substance).
What is axon terminal in psychology?
aka synaptic boutons, axon terminals are small swellings that are found at the terminal ends of axons. They are typically the sites where synapses with other neurons are found, and neurotransmitters are stored there to communicate with other neurons via these synapses.
What are the roles of the axon and dendrite quizlet?
Dendrites are multi-branched projections that extend from the cell body, they receive stimuli. Axon is a single projection form the cell body and carries nerve impulses away from the cell body.
What is the role of a axon and synapse?
Axons connect with other cells in the body including other neurons, muscle cells, and organs. These connections occur at junctions known as synapses. The synapses allow electrical and chemical messages to be transmitted from the neuron to the other cells in the body.
What is the end of an axon called?
The end branches of an axon are called telodendria. The swollen end of a telodendron is known as the axon terminal which joins the dendron or cell body of another neuron forming a synaptic connection.
What is the function of the axon and dendrite?
Specialized projections called axons allow neurons to transmit electrical and chemical signals to other cells. Neurons can also receive these signals via rootlike extensions known as dendrites.
Where is the axon of a neuron?
Each mammalian neuron consists of a cell body, dendrites, and an axon. The cell body contains the nucleus and cytoplasm. The axon extends from the cell body and often gives rise to many smaller branches before ending at nerve terminals. Dendrites extend from the neuron cell body and receive messages from other neurons.
What is true axon?
They are mitotic. Which of the following is true of axons? this is true; a neuron can have only one axon, but the axon may have occasional branches along its length.
What are the properties of an axon?
Axons have one main role: to transmit a nerve impulse securely from one end to the other with minimal expenditure of energy. To do this they have a complex structure and are endowed with a variety of ion channels, pumps and exchangers (see Waxman et al. 1995).
How long is an axon?
The cell body of a motor neuron is approximately 100 microns (0.1 millimeter) in diameter and as you now know, the axon is about 1 meter (1,000 millimeter) in length.
What does an axon look like?
Longer axons are usually covered with a myelin sheath, a series of fatty cells which have wrapped around an axon many times. These make the axon look like a necklace of sausage-shaped beads. They serve a similar function as the insulation around electrical wire.
What is the difference between a nerve and an axon?
A nerve is a bundle of axons of a large number of neurons in the peripheral nervous system. A nerve is a wire-like structure which transmits nerve impulses in the form of chemical and electrical signals between central nervous system and sensory or effector organs.
What is the difference between cell body and axon?
The long thread-like portion of a nerve cell that carries nerve impulses away from the cell body is called an axon. Dendrites are the small branched extensions of nerve cells that transport nerve impulses from synapses to the cell body. There is only one axon in a nerve cell. The dendrites of a nerve cell are many.
