Neurons

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What are neurons

They are also known as never cells and they are the basic structural and functional unit of the nervous system

What the the structure of neurons

Cell body (soma). Dendrities. Axon. Synapses. Synaptic vesicles

What is cell body (soma)

It is the main part of neurons it contains the nucleus and other organelles

What are dendrities

They are extensions of the cell body with specialized structures known as dendritic spines , they receive signal from other neurons and sensory receptors Signup and view all the answers

What are axon

It is a long slender projection (covered with myelin sheath) that extends from the cell body, they carry electric impulse away from the neurons Signup and view all the answers

What is synapse

It is a specialized junction between the axon terminal of on neurons and the cell body axon or dendrites of another neuron Signup and view all the answers

What is synapse vesicles

They are tiny sacs within axon terminal that store neurotransmitters Signup and view all the answers

What are the types of neurons

Sensory neurons. Motor neurons. Inter neurons. Purkinje cells. Pyramidal neurons Signup and view all the answers

What are sensory neurons

They are also known as afferent neurons they carry signals from receptors (eyes ears nose tongue skin) to the central nervous system (brain and spinal cords) Signup and view all the answers

What are motor neurons

They are also known as efferent neurons, they transmit signals from the central nervous system to muscles glands and other efferent organs Signup and view all the answers

What are interneurons

They are also known as association of relay neurons, they act as intermidiate between sensory and motor neurons Signup and view all the answers

What are purkinje cells

They are a type of interneurons that are located in the cerebellum the region of the brain responsible for motor cordination balance and fine motor skills Signup and view all the answers

What are pyramidal neurons

They are principal excitatory neurons that are located in the cerebral cortex the outer layer of the brain responsible for higher cognitive function, sensory perception and voluntary movement Signup and view all the answers

What are the features or functions of purkinje cells

<ol> <li>They have elaborate dendritic aborization with extensive branching. 2. It is located I the cerebellum. 3. It is the only output neuron in the cerebellum meaning it gives signal to the deep cerebellar nuclei. 4. They are involved in motor learning and adaptation process. 5. Their dysfunction or degeneration can lead to deficiency and disorder in motor functioning</li> </ol> Signup and view all the answers

What are neurons?

Basic structural and functional units of the nervous system, also known as nerve cells.

Neuron Structure

Cell body (soma), dendrites, axon, synapses, and synaptic vesicles.