Spinal Cord Function and Neuron Types
Function of Spinal Cord:
It receives the information transmitted by the sensory organs. It interprets that information and prepares adequate responses. It transfers the necessary signals to the effector organs. It coordinates all the organs so that they function correctly in our body. It carries out intellectual and mental functions. It is responsible for our emotions and feelings.
Type of Neurons:
- Structure: Unipolar, multipolar, bipolar.
- Function: Sensory neurons (transmit info from the receptor to the most important nerve centres), motor neuron (transmit the signals from the nerve centre to the effector organs), interneurons (connects the sensory neurons and the motor neurons. Located in the spinal cord and brain).
When a neuron is stimulated, some electrical changes originate in the membrane and these transmit the electrical signal from the dendrites towards the axon. Synapses, when they work together to established connections, allow the nerve impulses to cross from one neuron to another. Found between the end of the axon and a dendrite of an adjacent neuron.
The grey matter is made up of cell bodies and dendrites.
The white matter is made up of longer extensions, axons.
Interaction: The body’s adaptation to changes that takes place in our environment, as well as the coordination between different organs.
Brain spinal cord: Three membranes, called meninges, between the protecting bone of the organs. Dura, outermost layer, arachnoid, middle layer, pia master, innermost layer.
Nervous System: The transmission is carried out by means of a nerve impulse of an electrical signal. The action is fast. The action lasts a short time.
Endocrine System: The transmission of information is carried out by means of secreting certain substances of a chemical nature. The action is low. The action lasts longer.
Sympathetic Nervous System: This controls most of the body’s organs so that they work more effectively under stress.
Parasympathetic Nervous System: Its action provokes relaxation and the organs work more slowly and less intensely. This happens while sitting or relaxing.