Bio Psych Chapter 4
Terms in this set (37)
Central Nervous System (CNS)
Brain and spinal cord
Perephrial Nervous System (PNS)
Connects brain and spinal cord to the rest of the body
Autonomic Nervous System
Part of PNS, controls heart, intestines and other organs. Some cells with in brain and spinal cord and some along sides of spinal cord
Somatic Nervous System
Part of PNS, consists of the axons conveying messages from the sense organs to the CNS and from CNS to the muscles
Part of CNS with in spinal cord. Segmented structure each side has a sensory nerve and a motor nerve
Dendrites and cell bodies
Sympathetic Nervous System
A network of nerves that prepare organs for vigorous activity. Part of autonomic nervous system. "Fight or flight"
Parasympathetic Nervous System
Part of autonomic nervous system that facilitates vegetative non-emergency responses.
Posterior of brain. Consists of medulla, pons, and cerebellum
Central structures of brain. Consists of medulla, pons, midbrain, and other central structures.
Just above spinal cord. Controls vital reflexes (heart rate, etc.)
Control sensations from the head, muscle movements from head, and parasympathetic outputs.
Hindbrain structure with many folds. Controls movement and other complex roles.
Middle of brain, smaller than forebrain
Most prominant part of mammal brains. 2 hemispheres
A pair of strucutres in the center of the forebrain. Processes sensory information
small area at base of brain. Sends messages to pitituary gland, altering release of hormones
Endocrine gland attached to the base of hypothalamus
Large structure between thalamus and cerebral cortex. Stores memories
4 fluid filled cavaties in the brain
Cerebral Spinal Fluid (CSF)
A clear fluid cusions the brain and provides buoyancy
Membranes that surround the brain and spinal cord
When CSF flow is obstructed and accumulates in infants causing an overgrown head.
Cellular layers on the outer surface of the cerebral hemispheres. Gray matter, axons extend into white matter.
bundle of axons that hemispheres communicate through
Posterior end of cerebral cortex. Vision
On top between occipital lobe and frontal lobe
Deep groove in surface of cortex
Lateral portions of each hemisphere. Auditory information
Contains primary motor cortex
Records electric activity of brain
Measures magnetic fields generated by brain activity
Position-Emission tomography (PET)
High-resolution image of activity of brain by recording emission of radioactive injected chemicals
functional magnetic resonance imaging (fMRI)
Records energy released by hemoglobin
Computer Axial Tomography (CAT)
Dye is injected into blood and computer constructs images of brain. Detects structural abnomolies.
Magnetic Resonance Imaging (MRI)
Applies magnetic field and measures energy to form image of brain.
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