what do nerves do ?
Bring information to and form the CNS
what is a sea squirt?
filter feeder at the bottom of the ocean
what does a sea squirt begin life as?
what happens during the maturation of a sea squirt?
- attaches to a rock
- digests its own brain
- stays for the rest of its life
what are the 5 stages in mallows hierarchy of needs?
physiological safety love/belonging esteem self actualisation
how many lobes does the Brian have ?
what are the lobes of the brain ?
what does the frontal lobe do?
involved in planning and organisation
what does the parietal lobe do?
involved in sensation and touch
what does the occipital lobe focus on?
what is the temporal lobe important for controlling ?
memory and auditory processing
do most mammals have similar brain structure?
what are the transmitters on a nerve cell?
what are the branches son axons known as ?
what is the cell body of a neurone called?
what are dendrites from the soma called?
what are apical dendrites?
radiate from a long tuft
what is a cytoskeleton formed form ?
microtubules, neurofilaments and microfilaments
what’s the key function of microtubules?
provide structure and transport materials inside the neurone.
what shape are microtubules?
large hallow tubes
what size are microtubules ?
what is anterograde axoplasmic transport?
soma to the terminal
what protein is used in anterograde axoplasmic transport?
what is retrograde axoplasmic transport?
terminal to soma
what protein is used in retrograde axoplasmic transport?
which type of axoplasmic transport is faster?
How big are neruofilaments?
why are neruofilaments strong?
due to their coiled structure
How big are mcirofilaments?
what are mcirofilaments made from?
what do microfilament contribute too?
fluidity of neurones
what are some facts about axons?
long, vary in diameter, no rough ER or ribosomes, ends at axon terminal, membranes have different proteins
where do axons end?
neurotransmitters are packed into….
how are vesicles discharged?
what do postsynaptic receptors do?
what are the membrane of dendrites filled with?
do all dendrites have spines?
what are the three configurations of neurones ?
multipolar, bipolar unipolar
where are neurotransmitters made?
in the axon terminal
how do sensory neurones convey information?
process endings in the skin muscles and sensory organs detect stimuli from the environment and in the body, they connect to other neurones conveying information to the CNS.
what are the junctions of motor Neurones known as?
motor end plates
what are two neurones classified by morphology??
stellate neurones and pyramidal neurones
what shape are stellate neurones?
how did pyramidal neurones gain their name?
soma is shaped like a tiny pyramid
name 5 type sof glia
astrocytes oligodendrocytes Schwann cells microglia radial glia
when are glia cells important?
during early Brian development
what do astrocytes do?
how do astrocytes maintain homeostasis?
- pride structural suport
- provide nutrients
- regulate ions and molecules in extracellular fluid
- help form the blood brain barrier
what do oligodendrocytes do?
insulate axos in myelin sheath in the CNS
what do Schwann cells do?
found in the PNS do the same as oligodendrocytes
what are nodes of ranvier?
unmylenated segments of axon
what are microglia?
immune cells of the CNS
how are radial glia involved in brain developemnt?
helps neurones migrate t new locations by providing processes