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-nerve cells
-transmitting messages to or from the brain
Nuerons
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Components of a Nueron
- Dendrite
- Axon
- myelin sheath
- axon terminals
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catch the message from the next cell over..converts the message
dendrites
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cable...path that the message will follow
axon
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fatty substance
myelin sheath
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change message back to a chemical (sprays it out)
axon terminals
-
nuero transmitters
chemical messages
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What are the nervous systems?
- Central Nervous System
- Peripheral Nervous System
-
what system contains the brain, brain stem, and spinal cord?
Central Nervous System
-
what system is where the nerves are around the body?
Peripheral Nervous System
-
types of touch
pressure, pain, and temperature
-
doing something without actually thinking about it
Autonomic Sense
-
some effects of Fight or Flight
- -increased heart rate
- -respiration
- -presperation
- -pupil contraction and dilation
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what are the three sections of the brain?
Hind brain, Mid brain, and Fore brain
-
what part of the brain contains the medulla-vital functions
Hind
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what does Pons control?
movement, alertness, attention, sleep etc...
-
what's in the mid brain?
Recticular Activity System
-
Snaps back into consciousness
Recticular Activity system
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where is the fore brain?
at the top
-
control system for all messages, in and out of the brain
Thalamus
-
what controls the temperature, storage of nutrients, metabolism, motivation, and some emotion?
Hypothalamus
-
what system control learning, memory formation, desires, emotion, and aggression?
Limbic System
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what is 70% of the brian tissue
Cerebrum
-
what is the surface area of the cerebrum
cerebral cortex
-
what are the four lobes of the cerebrum?
parietal lobe, temporal lobe, ocipital lobe, ad frontal lobe
-
what lobe is at the rear of the cerebrum and is the sight?
Ocipital
-
what is the auditory sense
temporal lobe
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what lobe is the touch sensations?
parietal lobe
-
what lobe has the motor skills?
Frontal lobe
-
what secrete hormones?
glands
-
what are chemicals that provoke a response
hormones
-
what is it called when the body will self-regulate at a constant state?
homeostasis
-
what are five different types of glands?
Brain, Pituitary, Thyroid, Adrenal, Sex glands
-
what gland is responsible for the growth hormone?
Pituitary Gland
-
what gland is in the neck and regulates the metablism?
Thyroid Glands
-
what supplies hormones responsible for energy?
Adrenal Glands
-
what sex characteristics give facial hair, lowering of the voices, aggresion, and muscle mass?
Testorone
-
what sex characteristics does breast development and menstruation belong to?
Estrogen
-
who was the first case study of the brain?
Phineas Gage
-
what did we learn from Phineas Gage accident.
There are different parts of the brain and some are more important than others
-
what are 3 examples of electric stimulation?
dystenia patient, the rats and bulls
-
what are four different brain scans?
-
x-rays internal organs
uses radiation
very clear
2-d
C.A.T. scan
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Magnetic Reasoning Image
3-d
not as clear
M.R.I.
-
monitors electric activity
more constant idea of what's happening
E.E.G.
-
constant monitoring...color coded
2d
P.E.T scan
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