Psyc 1101 Final Exam Questions and Answers Already Passed

Psyc 1101 Final Exam Questions and Answers Already Passed What is Psychology The study of mental processes. Subfields of Psychology Cognitive, Biological, School, Personality Psychodynamic approach of Sigmund Freud Unconscious Biological psychology study of cells, genes, and organs of the body and the physical and chemical changes involved in behavior and mental processes Nervous system receives information, sends messages, and begins actions Endocrine system regulates internal activity of the body with glands that secrete hormones. Neurons send and receive signals Glial cells "glue" these cells hold neurons together. But they also guide neuron's growth, maintain a stable chemical environment, provide energy, help restore damage, and help respond to signals from neurons. Axon a cell fiber that carries signals away from the cell body. (most neurons only have one) Dendrite a cell fiber that receives signals from other neurons and carries information toward the neurons cell body. (most neurons have many dendrites) Action potentials are electrochemical pulses that shoot down the neuron's axon. * "all or none" it either fires at full strength or not at all. *Speed depends on thickness of axon and myelin(white fatty substance that speeds up ) How do dendrites receive messages? bag-like vesicles release stored chemicals called Neurotransmitters into space between two neurons Synapse space between neurons Neurotransmitters chemical that floats across synapse to bind with receptors, proteins on a dendrite or receiving neuron. Central Nervous System (CNS) Consists of the brain and spinal cord (protected by bone). is the CEO of the nervous system- receives info, processes it and decides what actions should result. Peripheral Nervous System extends throughout the body and relays info. to and from the brain. Somatic Nervous System carries signals between the senses and CNS, and between the CNS and skeletal muscles. sensory neurons bring info to the brain motor neurons send info from brain to muscles Autonomic Nervous System carries messages between the CNS and the heart, lungs, and other organs and glands.