Glial cells. At the beginning of this article, we said that the nervous system was made up of two types of cells,
neurons and glia
, with the neurons acting as the basic functional unit of the nervous system and the glia playing a supporting role.
What are the basic functional units of the nervous system?
The basic unit of the nervous system is
a nerve cell, or neuron
. The human brain contains about 100 billion neurons. A neuron has a cell body, which includes the cell nucleus, and special extensions called axons (pronounced AK-sonz) and dendrites (pronounced DEN-drahytz).
What are the two primary nervous system functions?
The nervous system is involved in
receiving information about the environment around us (sensation) and generating responses to that information (motor responses)
. The nervous system can be divided into regions that are responsible for sensation (sensory functions) and for the response (motor functions).
What are the basic functional units of the nervous system quizlet?
The basic functional unit of the nervous system is
the neuron
.
What are the two basic units of the nervous system?
It includes two types of nerve fibres which are afferent nerve fibres and efferent nerve fibres. The basic unit of the nervous system is
a nerve cell or a neuron
. The human brain comprises about a hundred billion neurons. A neuron has a cell body, which includes the cell nucleus, and special extensions called axons.
What is nervous system with diagram?
The Central Nervous System is the integration and command center of the body. It consists of the brain, spinal cord and the retinas of the eyes. The Peripheral Nervous System consists of sensory neurons, ganglia (clusters of neurons) and nerves that connect the central nervous system to arms, hands, legs and feet.
What is the basic unit of nervous system called?
The basic unit of communication in the nervous system is
the nerve cell (neuron)
. Each nerve cell consists of the cell body, which includes the nucleus, a major branching fiber (axon) and numerous smaller branching fibers (dendrites).
Which organ is part of our nervous system?
The brain and the spinal cord
are the central nervous system. The nerves that go through the whole body make up the peripheral nervous system.
What is the functional unit of the nervous system Group of answer choices?
The neuron
is the functional unit of the nervous system. Humans have about 100 billion neurons in their brain alone! While variable in size and shape, all neurons have three parts. Dendrites receive information from another cell and transmit the message to the cell body.
Which is a basic function of the nervous system?
The nervous system is the
major controlling, regulatory, and communicating system
in the body. It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis.
What are the 3 functions of the central nervous system?
The CNS is comprised of the brain, cerebellum and spinal cord. Remaining neurons, and associated cells, distributed throughout the body form the PNS. The nervous system has three broad functions:
sensory input, information processing, and motor output
.
What is the most important part of the nervous system?
The brain and the spinal cord
make up the central nervous system. The nervous system is the most complex and highly organized body system. It receives information from the sensory organs via nerves, transmits the information through the spinal cord, and processes it in the brain.
What are the 9 parts of the nervous system?
- Nervous Tissue. The majority of the nervous system is tissue made up of two classes of cells: neurons and neuroglia. …
- Brain. …
- Spinal Cord. …
- Nerves. …
- Meninges. …
- Cerebrospinal Fluid. …
- Sense Organs. …
- Functions of the Nervous System.
Are the structural and functional units of the nervous system?
Neurons, or nerve cell
, are the main structural and functional units of the nervous system. Every neuron consists of a body (soma) and a number of processes (neurites). … Dendrites are short and act to receive impulses from other neurons, conducting the electrical signal towards the nerve cell body.
What is the most common type of neuron found in your nervous system?
Interneurons
. Interneurons are neural intermediaries found in your brain and spinal cord. They’re the most common type of neuron. They pass signals from sensory neurons and other interneurons to motor neurons and other interneurons.
What are the two function of dendrites?
Dendrites Function. The functions of dendrites are
to receive signals from other neurons, to process these signals, and to transfer the information to the soma of the neuron
.
