-
What are the parts of a neuron?
- Dendrites
- Soma
- Axon
- Myelin Sheath
-
Phases of Neuron impulse cycle?
- resting
- action potential(firing)
- Recovery phase
- Resting phase
-
What is the all-or-nothing law?
Neurons are either working or not
-
What are the functions of the glial cell?
- Nourishing
- insulate
- repair/remove
- Tumor development
-
What are mirror neurons?
neurons that fire when you watch another action
-
What is synapse?
a space gap between 2 neurons
-
What is reuptake?
- the process of chemicals/electric charge going into a neuron
- after it enters the synapse
-
What is a neuro transmitter?
chemicals that carry messages across synapse
-
What is an excitatory message?
- a chemical that causes the neuron to be more
- active.
-
what is an inhibitory message?
decreases the likelyhood that a neuron will fire
-
What is acetylcholine?
- excitatory in the brain and autonomic system
- inhibitory everywhere else
- causes muscle movement
-
What is seritonin?
- located in the nervous system
- inhibitor effect
- regulates sleep, eating, mood, pain and depression
-
What is dopamine?
- located in the nervous system
- inhibitory or excitatoy
- movement control(muscles)
- too much causes schizophrenia
- too little causes parkinson's disease
-
What are endorophins?
- located in nervous system
- primary inhibiory, except in hippocampus
- functions are pain suppression
- pleasurable feelings, appetites, placebos
-
what happens during runner's high?
- when endorphins are released after long periods of muscle stress
- this is to releive pain.
-
What is in the centeral nervous sstem?
brain and spinal cord
-
What is somatic/skeletal division?
- divided into sensory and motor
- sensery afferent>to the brain
- motor efferent>away from the brain
-
What is behavioral genetics
study of effects of heredity on behavior
-
What is a viation of HOXA1 gene?
autism
-
What is autism
a disorer that affects language an social functions
-
What is te pituitary gland?
the master gland of the human body
-
What does the endocrine system do?
secreetes hormones that affect growth
- what is oxytocin
- a hormone released b the pituitary gland that causes
- contraction of the uterus during labor and stimulates
- the ejection of milk
-
What are some effects of steroid abuse?
- heart attacks
- strokes
- cancer
- and violent behavior
-
what is an electroencephalogram(EEG)?
- electrodes wired on te scalp
- measure electric brain waves during sleep and thought
- used to diagnose seizures
-
What is positron Emission Tomograpphy(PET)?
- inject radioactive glucose into bloodstream
- uses x-ray to show levels of high activity
-
What is Transcranial magnetic Stimulation (TMS)?
temporarily interupting the brain
-
What is Functional magnetic resonance imaging (FMRI)?
- uses radio waves to generate signals
- computer in tunnel picture thing
-
What does the medula control?
heart rate and respiration
-
What does the cerebellum control?
balance and vision
-
What is the reticular formation?
a route to the higher brain centers
-
what does the thalamus do?
sends sensory messages upward
-
What does the hypothalamus do?
- maintains homeostasi
- eating drinking, temperature, emotion
-
What does the cerebral cortex do?
sophisticated info processing in brain
-
what is neuroplasticity?
- changes in the brain that occur throughout life span
- relating to new neurons and connections
-
What does the left hemisphere do?
in charge of language and sequential activities
-
What does te right hemisphere do?
emotion, art, music, perception
-
what is bio feedback?
when a person learns how to control bp, hr, rr....
|
|
