Term
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Definition
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Term
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Definition
| How body parts work to carry out functions (cellular level) |
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Term
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Definition
| Maintenance of a constant internal environment |
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Term
| Failure in homeostasis results in |
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Definition
| Illness and may cause death |
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Term
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Definition
Negative and Positive
Regulation of homeostasis |
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Term
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Definition
| Variation outside normal limits. Response is to restore normal, automatic response. System that occurs the most. |
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Term
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Definition
| Variation outside normal limits. Response is body elevates it. In an unhealthy individual will often result in death. Rare in healthy individual. (Ex: Pregnancy) |
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Term
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Definition
Body's master control and communication system
Detection and response to the environment |
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Term
| Central Nervous System (CNS) |
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Definition
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Term
| Peripheral Nervous System (PNS) |
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Definition
Nerves (Motor, Sensory, Interneurons)
Divisions (Somatic and Autonomic) |
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Term
| Somatic (Division of PNS) |
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Definition
| Under conscious control (skeletal) |
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Term
| Autonomic (Division of PNS) |
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Definition
| Automatic (organs). Sympathetic nervous system and Parasympathetic Nervous System. |
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Term
| Sympathetic Nervous System |
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Definition
Autonomic
Controls organs in time of stress (fight/flight reaction) |
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Term
| Parasympathetic Nervous System |
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Definition
Autonomic
Controls organs when body is at rest. |
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Term
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Definition
| Largest part of the brain |
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Term
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Definition
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Term
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Definition
| Shallow depressions of brain |
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Term
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Definition
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Term
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Definition
| Separates left and right hemisphere of brain |
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Term
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Definition
| Holds together and communicates left and right hemispheres. Thick band of white matter. |
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Term
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Definition
| Voluntary motor functions, language/speech, emotion, aggression/ consequence (includes Broca's Area) |
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Term
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Definition
Part of Frontal Lobe
Motor control of speech |
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Term
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Definition
| Reception/evaluation of sensory info, fine motor skill (includes Wernike's Area) |
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Term
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Definition
Part of Parietal Lobe (left hemisphere only)
Plays a role in visual and auditory memory |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Cortex of brain
Includes thalamus, hypothalamus, pituitary, infundibulum) |
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Term
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Definition
Part of Diencephalon
Relays info of sensory impulses coming in. "Gateway to cortex" |
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Term
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Definition
Part of Diencephalon
Maintains water balance, temperature, thirst/hunger, sex drive, sleep/wake, hormones, pain/pleasure center |
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Term
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Definition
Part of Diencephalon
Main endocrine gland |
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Term
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Definition
Part of Diencephalon
Connects pituitary and hypothalamus |
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Term
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Definition
| Includes midbrain, pons, medulla oblangata |
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Term
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Definition
Part of Brain Stem
Process auditory/visual stimulus, contains cerebral aquaducts |
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Term
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Definition
Part of Brain Stem
Connects cerebellum to spinal cord (respiration rate) |
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Term
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Definition
Part of Brain Stem
Involuntary. 5 cranial nerves connect here. Controls heartbeat, respiration, digestion (muscle) |
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Term
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Definition
| 4 connected cavities within the brain. Circulates cerebral spinal fluid |
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Term
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Definition
| Function is protection in the form of shock absorption. 1/2 cup being circulated. Made in choroid plexus. |
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Term
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Definition
| Located in 3rd and 4th ventricles. Collection of capillaries. Makes CSF. |
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Term
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Definition
| Dense area of cell bodies with short axons. Interprets information. |
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Term
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Definition
| Made of axons (nerve track). Delivers information to cells. |
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Term
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Definition
| Protection of the skull. Includes Dura Mater, Arachnoid mater, Pia mater |
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Term
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Definition
| Part of meninges. "Tough Mother." Includes Periasteal dura mater, meningeal dura mater, dural sinus, and venous blood |
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Term
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Definition
| Part of Dura Mater. Attached to the skull. Exterior. |
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Term
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Definition
| Part of Dura Mater. Interior. |
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Term
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Definition
| Part of Dura Mater. Space between Periasteal dura mater and Meningeal dura mater. |
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Term
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Definition
| Blood containing waste. Enters the jugular vein in the dural sinus |
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Term
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Definition
| Part of Meninges. "Spider Mother." No blood vessels. Contains arachnoid villas. CSF circulated in this area. |
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Term
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Definition
| Projections in the Arachnoid mater that enters the dural sinuses |
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Term
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Definition
| Part of Meninges. "Little Mother." Adheres to brain. Contains many arteries. |
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Term
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Definition
| Neurons in brain are kept separate from most blood substances. Brain has the least permeable capillaries. Only water soluble things can enter. |
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Term
| Cell Body (Part of a Typical Motor Neuron) |
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Definition
| Metabolic center and processing center |
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Term
| Dendrites (Part of a Typical Motor Neuron) |
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Definition
| Receives sensory information |
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Term
| Axonal Hillock (Part of a Typical Motor Neuron) |
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Definition
| Where axon comes off of dendrite |
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Term
| Myelin (Part of a Typical Motor Neuron) |
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Definition
| White, fatty, waxy substance. Protects and insulates nerve fiber. Made by Schwann cells. |
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Term
| Nodes of Ranvier (Part of a Typical Motor Neuron) |
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Definition
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Term
| Axon Terminals (Part of a Typical Motor Neuron) |
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Definition
| Average axon can have thousands. At end are membranous sacs that contain neurotransmitters. |
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Term
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Definition
| In axon endings (contains vesicles - little pouches that neurotransmitters). Action potential reaches axon ending. Ca+ in synapse enters the axon, causing the vesicle to bind to the membrane and release the neurotransmitter. Neurotransmitter binds to receptors on dendrite, causing Na+ channels to open, starting action potential over. Neurotransmitter recycled. |
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