Chapter 2 Flashcards
(59 cards)
Biological Psychology
Psychology that focuses on the biological reasonings for things
Phrenology
The study of the bumps and indents on someone’s head. Used to tell personality
Neuron
A single nerve cell
Dendrite
Short bushy fibers that receive messages, they listen
Myelin Sheath
The layer of fatty tissue encasing the fibers of the neuron. Enables faster neural impulses
Action Potential
A neural impulse. A brief electrical charge that travels down the axon
Threshold
The level of stimulation required to trigger a neural impulse
Synapse
The gap between the receiving dendrites and the messenger axon
Neurotransmitters
Chemical messengers that travel through the synaptic gap between neurons
Acetylcholine Achieve
Enables muscle action, memory and learning. The lack of is linked to Alzheimer’s disease
Dopamine
Influences learning, emotion, attention, and movement. Linked to schizophrenia and Parkinson’s disease
Serotonin
Affects mood, hunger and sleep. Linked with depression, hunger and sleep disorders
Endorphins
The body’s natural pain killers
Nervous System
All of our nerve cells. The body’s speedy electrochemical communication system
Central Nervous System
The brain and spinal chord
Peripheral Nervous System
The sensory and motor neurons that connect the central nervous system to the rest of the body
Nerves
Consists of cables containing many axons. Part of the PNS. Nerves that fire together wire together
Sensory Neurons
Send info to the brain and spinal chord
Motor Neurons
Send info from the CNS to muscles and glands
Interneurons
Connect sensory and motor neurons
Somatic Nervous System
Part of the PNS. Controls the body’s skeletal system
Autonomic Nervous System
Part of the PNS. Controls the glands and other muscles
Sympathetic Nervous System
Part of the ANS. Arouses the body. Fight or flight
Parasympathetic Nervous System
Part of the ANS. Calms the body down. Rest and Digest.