Random recall

Saturday, 03/10/09

Part of love, is a happy compromise.

I dunno where that came from. One of my musings of the day. Haha.


Ok time for some recall. Been studying the whole day today. Finally finished notes for the long and arduous chapter 2!! But but but....it's one only one of the 5 chapters tt I have to study by mon. Sian. Jia you jia you!! Lol.

Action potential: Na gates open and depolarization occurs. When threshold is passed and cell reaches peak, K gates open too. Soma fires electrical signal down axon when it receives enough stimuli. Passed nodes of ranvier. Myelin sheath speeds up transmission. Vesicles in terminal buttons contain neurotransmitters which are released into synapse. 4 things can happen: reuptake, digested by enzymes, cytosis, or binding to receptor sites on post-synaptic membrane.
Whew. Ok I did refer just a teeny bit. Hee.

Layers of brain: Limbic system, brain stem and support system-thalamus and cerebrum.
Limbic system:
hypothalamus-balance body's internal conditions, detect and correct changes.
amygdala-produces fear and apprehension. For long-term mem.
hippocampus-essential for long-term memory, or rather, episodic declarative memory.

brain stem:
pons-nerve fibres, connect brain stem to cerebellum, regulates slp and dreaming.
medulla-regulates body's process outside consciousness.
recticular formation-core of brain stem , controls alertness, directs incoming neural info.

support system:
thalamus-receives incoming msges from brain stem and sends it to parts of brain that are specialised in processing specific info. "central processer".

cerebrum-4 lobes:
frontal- planning, sense of 'self', motor movement, speech.
parietal- sensory, spatial imaging
temporal- auditory
occipital- vision

Ok tt's all..time to go back and revise more =p