Biopsychology Flashcards
Biopsychology- Nervous system
Consists of the central nervous system and the peripheral nervous system. Communicates using electrical signals
Central Nervous System (CNS)
Consists of the Brian and the spinal cord and is the origin of all complex commands and decisions
Peripheral Nervous Systems (PNS)
Sends information to the CNS from the outside world, and transmits messages from the CNS to muscles and glands in the body
The endocrine system
One of the boys major information systems that instructs glands to release hormones directly into the bloodstream. These hormones are carried towards target organs in the body. Communicates via chemicals
Glands
Glands produce hormones
Hormones
Hormones disrupted in bloodstream
Adrenal gland- Adrenaline
Thyroid gland- Thyroxine
Fight of flight
Adrenaline leads to increased heart rate- Sympathetic nervous system
Parasympathetic nervous system- slows down heart rate
What are the 3 Neurones in order
Sensory neurone
Relay neurone
Motor neurone
Structures of neurones
Cell body
Axon
Nucleus
Dendrites
Myelin sheath
Nodes of Ranvier
Terminal buttons
Synapse
Electrical transmission
Positive charge leads to action potential
Synaptic transmission process
- Neurotransmitters are carried in synaptic vesicles down the axon
- The neurotransmitters are taken to the pre synaptic nerve terminals
- They are released through the synapse
- They are excepted by the postsynaptic receptor sites on the dendrite
Synapse
Neurones separated by very tiny gap
Neurotransmitters
Specialist functions e.g acetylcholine for muscle contraction
Excitation
Adrenaline makes the neurone becomes positively charged and more likely to fire
Inhibition
Serotonin makes the neurone becomes negatively charged and less likely to fire
