Psych Good

Psych Good - Chapter 3: Biological Aspects of Psychology...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 3: Biological Aspects of Psychology Biological Psychology-is the study of the cells and organs of the body and the physical and chemical changes involved in the behavior and mental processes. The Neuron: o Dendrites- take in or receive signals from the axons of the other neurons and carry those signals to the cell body o Soma- the cell body o Axon- fibers that carry signals away from the body of a neuron out to where communication occurs with the other neurons o Synapse- the tiny gap between neurons across which they communicate o Polarized- more negative than positive molecules on the inside of cell o Depolarization- channels of cell membrane open, letting in the positively charged molecules o Action Potential- an abrupt wave of electrochemical changes traveling down an axon when a neuron becomes depolarized o Once the action potential travels to the end of the axon, neurotransmitters are released into the synapse . o Neurotransmitter- chemicals that assist in the transfer of signals from one neuron to another. They open channels o Receptors- sites on the surface of cells that allow only on type of neurotransmitter to fit into them, triggering a chemical response that may lead to an action potential. o Postsynaptic Potential : Excitatory- positive molecules enter, depolarized, FIRE! Inhibitory- negative molecules enter, hyperpolarized, no fire The Nervous System o Organization of the nervous system The nervous system is a complex combination of cells whose primary function is to allow the organism to gain information about what is going on inside and outside the body and to respond appropriately. o Central Nervous System- the parts of the nervous system housed in bone (aka skull and spine) Spinal cord in charge of reflexes Brain-way more complicated Lobes of the Brain (are separated by fissures) o Frontal o Temporal o Occipital o Parietal Left and right hemispheres are connected by a bundle of neurons called the Corpus Collosum o Left-language, logic, math o Right- recognition, visual, emotional o Lateralized- refers to the tendency for one cerebral hemisphere to excel at a particular function or skill compared to the other. Cortex- functional area of the brain Areas of language cortex o Wernickes Area- language, seems to be in charge of semantics (meaning of words) o Brocas Area- stuttering, broken speech, in charge of syntax (order of words) o Peripheral Nervous System- the parts not housed in bone Somatic- transmits information from the senses to the CNS and carries signals from the CNS to muscles Autonomic- carries messages between the CNS and the heart, lungs, and other organs and glands. Cant control....
View Full Document

Page1 / 67

Psych Good - Chapter 3: Biological Aspects of Psychology...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online