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30 Cards in this Set

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  • Back
Central Nervous
Consists of Brain and Spinal Cord
Peripheral Nervous
Lies outside the midline portion of your nervous system, carrying sensory info to and motor info away from the central nervous via spinal/cranial nerves
Somatic Nervous
Has motor neurons that stimulate skeletal (voluntary) muscle
Autonomic Nervous
Has motor neutrons that stimulate smooth (involuntary) and heart muscle
Sympathetic Nervous
Stimulation results in responses that help your body deal with stressful events Ex. Dilation of pupils/increased heart rate
Parasympathetic Nervous
Stimulation calms your body after sympathetic stimulation. Ex. Restores digestive processes, returning pupils to normal
Spinal Cord
Protected by meninges and spinal column.Starts at base of the back up to base of skull, where it joins the brain; Made up of interneurons and glial cells, bathed in cerebrospinal fluid excreted by glial cells
Brain
Covered by meninges and protected by the skull.
Reptilian brain
Medulla, pons, cerebellum; Maintains homeostasis and instinctive behaviors
Old mammalian brain
Septum, hippocampus, amygdale, cingulated cortex, hypothalamus, thalmus; Controls emotional behavior, important to memory and vision.
New mammalian brain (Neocortex)
Cerebral Cortex (80%) of brain; Associated with judgement
Medulla Oblongata
Where most fibers cross; Results in contralateral control, regulates heart rhythm, blood flow, breathing rate, etc
Pons
Includes portion of reticular activating system, critical for arousal, Bridge between hemispheres
Cerebellum
Coordinates motor function integrating motion and positional info from the inner ear and muscles
Thalamus
Relay “station” for sensory pathways carrying vision, auditory, taste, somatosensory info
Hypothalamus
Controls autonomic functions such as body temperature/heart rate, Sets emotions and feelings, Helps biological rhythms
Amygdala
Influences aggression/fear, important in formation of sensory memory
Hippocampus
Enables formation of long term memory
Cerebral Cortex
Receives and processes sensory info and directs movement; Center for higher processes (planning judging, thinking)
Occipital Lobes
Info from visual field in processed in opposite sides
Parietal Lobes
Somatosensory cortex (for touch sensations), contralateral representation of all body parts
Frontal Lobes
Initiates movements and integrates activities of skeletal muscles (contralateral)Broca’s Area in left side controls speech
Temporal Lobes
Center for hearing, used for understanding music/tonality, smell is processedWernicke’s Area in left understand language and making meaningful sentences
Plasticity
If one region of the brain is damaged, it can reorganize to take of its function
Glial Cells
Guide growth of developing neutrons, helps provide nutrition and gets rid of wastes of neurons, provides insulating sheath around neurons
Neuron
Receive info, process info, and transit it to the rest of the body
Cell Body
Directs synthesis of such substances as neurotransmitters.
Dendrites
Capable of receiving info
Axon
Emerges from dendrite, which branches are called terminal buttons, and is covered by an insulating myelin sheath
Neurotransmitters
Chemicals stored in the structure of the terminal buttons called synaptic vesicles