Nerves Introduction Flashcards
What is the two ways in which the nervous system can be divided
CNS and PNS
OR
division on function, automic somatic and enteric
The brain consists of the cerebellum and the _____
Cerebrum
Brain stem is divided in to 3 section, name them starting at those under the diencephalon
Mid brain
Pons
Medulla oblongata
Name all the lobes in the brain
Frontal, partial, occipital and temporal
What are the bulges and gaps in the brain called:
Gyrus and sulcus
How many cranial nerves are there
12
How many spinal nerves are there
31 pairs
What do spinal tracts do and where are they located
Take information to and from the brain in white matter of spinal chord
Where on the neutron is an AP generated
Initial segment
What are the two types of cells in the nervous system
Glia and neurones
What are the 3 types of glia cells and what is there associated function
Oligodendrocytes = cover axon in CNS Microglial = phagocyte Astrocytes = maintain the external environments for the neutrons by surrounding the blood vessels and produce blood brain barrier
What are the 3 membrane potential
Action
Graded
Resting
What are the 4 properties of graded potentials
Decremental
Graded
Summate
Hyper or depolarising
Fast inhibitory post synaptic potential is via metabotropic receptors
False, these require G protein. Fast is through ionotropic receptors
Where do the 3 of these bind, axo axonic , somatic, dendritic
1- binds to the presynatic terminal
2- synapses onto the soma
3- synapses onto the dendritic
