Post on 18-Jul-2015
transcript
Neurons, Hormones, and the Brain
The Nervous SystemCentral
Peripheral
• Sensory information• Composed of the brain and spinal cord.• Contains spinal reflexes
• Controls everything outside the central nervous system
• Contains sensory nerves and motor nerves. • Somatic - bodily• Autonomic – self governing
Neurons
• The nervous system is consisted of neurons.
• Neurons have three main parts dendrites, a cell body, and axons.
• Dendrites are tree like structures that receive messages and then transmit them towards the cell body.
Chemical Messengers
Neurotransmitters Hormones
• Serotonin• Dopamine• Acetylcholine• Norepinephrine• GABA ( Gamma- aminobutyric acid)• Glutamate
• Melatonin• Oxytocin• Adrenal hormones-
epinephrine/norepinephrine• Sex hormones-
Androgens, Estrogens, and Pogesterone
Mapping the Brain• Electrical and Magnetic detection
-Electroencephalogram (EEG)-Transcranial magnetic Stimulation
• Scanning the Brain-PET -MRI
Hypothalamus
Entrance to the Brain
← Relays sensory messages to the cerbral cortex
← Involved in emotions and drives vital to survival, such as fear, hunger, thirst, and reproduction; Also regulates the autonomic nervous system
Message center to and from the brain. Medulla Pons
-Bodily functions - Sleeping- Waking- Dreaming
Also part of the brain stem, the Reticular Activating System
The prefrontal cortex is the part of our brain associated with complex abilities such as reasoning, decision making, and planning
Brain stem