The nervous system Flashcards
(34 cards)
what are the three principal functions of the nervous system
sensory input, integration and motor output
what is sensory input
when the nerve detects a change in environment and send it to the brain
what is integration
Integration is the body processes what to do.
what is motor output
The response that occurs when your nervous system activates parts of your body
what are the two parts of the nervous system
The central and peripheral
what makes up the central nervous system
The spinal cord and brain
what makes up the peripheral nervous system
all the nervous that branch off from the brain and spinal cord
what are the two parts of the peripheral nervous system
Sensory and motor
what does the sensory division do
The sensory division detects a change in the environment and sends it to the brain
what does the motor division do
The motor division send signals from your brain to your muscles and glands
what are the two parts of the motor division
The somatic and autonomic
what does the somatic nervous system do
this is the part that send your voluntary signals to your muscle
what does the autonomic nervous system do
This is the part that send your involuntary signals to your lauges heart and stomach.
what are the two parts of the autonomic nervous system
sympathetic and parasympathetic
what does the sympathetic nervous system do
It releases adrenaline and makes you do stuff
what does the parasympathetic nervous system do
It calms you down and controls homeostasis.
what are the different glial cells in your central nervous system
astrocytes, microglial cells, ependymal cells and oligodendrocytes
what does astrocytes do.
they connect the neurons to the blood supply and govern the exchange of materials between neurons and capillaries
what does microglial cells do.
they protect it from intruders
what does ependymal cells do
they line cavities in your brain and spine and release spinal fluid to cushion the two organs.
what does oligodendrocytes
they rap around neurons to create an insulating sheet that speeds up the efficiency and speed of the signal.
what are the different types of glial cells in your peripheral nervous system
satellite cells and schwann cells
what does satellite cells do
they connect the neurons to the blood supply and control the amount of resources they get
what does schwann cells
They rap around one specific part of the neurons to create an insulating sheet that speeds up the efficiency and speed of the signal.
