Nervous system

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Motor Output

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73 Terms

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Motor Output

function of the brain; a response to integrated stimuli; activated muscles/glands to perform actions

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Cerebrum

largest part of the brain; responsible for voluntary muscular activity, vision, speech, taste, hearing, thought, and memory

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3

Neuron

a specialized cell transmitting nerve impulses; a nerve cell

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4

Grey Matter

a portion of the cerebrum containing cell bodies with dendrites; outer layer of the brain

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5

White Matter

myelinated axons

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6

Myelin

a fatty substance that helps insulate neurons and speeds the transmision of nerve impulses

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7

Limbic System

brain system; associated with emotions and motivations

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8

Amygdala

limbic system component linked to pleasure and fear responses such as phobias and PTSD

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Hippocampus

a brain center located in the limbic system; helps process memories for storage

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10

Diencephalon

is made up of the thalamus, hypothalamus, and epithalamus; “interbrain”

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Thalamus

relay station/switchboard of the brain; transfers sensory information to the correct part of the brain for processing

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12

Hypothalamus

regulates homeostasis; is the bodies thermostat

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13

Pituitary Gland

attached to the hypothalamus; releases hormones that affect growth, sexual development, metabolism, and reproduction

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14

Epithalamus

involved in olfactory senses and sleep/wake cycle

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15

Corpus Callosum

a broad band of nerve fibers that connect the two hemispheres of the brain

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16

Brainstem

the oldest part and central core of the brain, responsible for autonomic survival functions; primitive rat brain

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17

Midbrain

a small part of the brain above the pons that integrates auditory and visual information and relays it upward toward the cerebrum and cerebellum

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18

Medulla Oblongata

part of the brainstem that controls vital life-sustaining functions such as heartbeat, breathing, blood pressure, and digestion

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19

Meninges

three protective membranes that surround the brain and spinal cord

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20

Cerebellum

a large structure of the hindbrain that controls fine motor skills; balance and coordination

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21

Dura Mater

outer layer of the meninges, tough and thick

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22

Meningitis

inflammation of the meninges

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23

Concussion

a bruise like injury of the brain

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24

Stroke

damage to the brain from interruption of its blood supply

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25

Hemorrhage

bleeding from ruptured blood vessels

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Aneurysm

ballooning of a weakened portion of an arterial wall

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27

Central Nervous System

consists of the brain and spinal cord

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28

Peripheral Nervous System

a part of the nervous system consisting of all nerves not part of the brain and spinal cord

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29

Afferent Neurons

sending sensory information towards the brain

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30

Efferent Neurons

nerve cells that conduct impulses away from the brain

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Somatic Nervous System

voluntary control of the bodies skeletal muscles

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Autonomic Nervous System

controls involuntary activity of abdominal muscles and internal organs and glands

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Sympathetic Nervous System

brain control triggering “fight or flight” response

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Parasympathetic Nervous System

the division of the autonomic nervous system that calms the body, conserving its energy (restores homeostasis after “fight or flight response)

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Homeostasis

process where organisms maintain a relatively stable internal environment

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36

Synapse

a junction where information is transmitted from one neuron to the next

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Synaptic Cleft

gap between adjacent neurons

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38

Neurotransmitter

chemical messengers that cross the synaptic gaps between neurons

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39

Serotonin

affects mood, hunger, sleep, and arousal; undersupply linked to depression

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40

Dopamine

a neurotransmitter that regulates motor behavior, motivation, pleasure, and emotional arousal

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41

Homunculus

an artistic representation of regions of the body in the brain and he amont of sensory information for each region

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42

Gyri

ridges of the brain

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43

Sulci

shallow grooves of the brain

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44

Longitudinal Fissure

separates left and right hemispheres of the brain

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45

Transverse Fissure

separates cerebrum from cerebellum

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46

Lateral Fissure

separates temporal lobe from frontal and parietal lobes

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47

Frontal Lobe

part of cerebrum associated with reasoning, planning, parts of speech, movement, emotions, and problem solving

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Parietal Lobe

portion of the cerebrum that receives sensory input for touch and body position

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49

Occipital Lobe

a region of the cerebrum that processes visual information

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50

Temporal Lobe

a region of the cerebral cortex responsible for hearing and language

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51

Olfactory

the nerve that carries smell impulses from the nose to the brain; CN I; SENSORY

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Optic

the nerve that carries impulses from the retina to the brain; CN II; SENSORY

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53

Occulomotor

nerve allows movement of eye for tracking, dilating pupil and raising eyelid; CN III, MOTOR

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Trochlear

controls eye movement specifically looking down and towards a midline; CN IV, MOTOR

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55

Trigeminal

allows for pain and touch from the face, controls muscles for mastication (chewing); CN V, SENSORY/MOTOR (mixed)

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56

Abducens

controls lateral eye movement; CN VI, MOTOR

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57

Facial Nerve

controls muscles of facial expression, carries sensation of taste, transmits sensations of touch and pain from ear; CN VII, MOTOR/SENSORY (mixed)

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Vestibulocochlear/Acoustic

hearing and balance sensation relayed to the brain; CN VIII, SENSORY

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Glossopharyngeal

taste sensations, pain from tongue and tonsils, helps to swallow; CN IX, SENSORY/MOTOR (mixed)

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Vagus

cranial nerve that innervates digestive organs, heart and other areas; CN X, SENSORY/MOTOR (mixed)

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Spinal Accessory

controls movement in the head, neck, and shoulders; CN XI, MOTOR

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Hypoglossal

allows the tongue to move, helps in speech, and moving food to back of the mouth for swallowing; CN XII, MOTOR

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63

Parietal Lobe

name the pink region

<p>name the pink region</p>
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64

Brainstem

name the bottom blue region

<p>name the bottom blue region</p>
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65

Frontal Lobe

name the large teal region

<p>name the large teal region</p>
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66

Occipital Lobe

name the green region

<p>name the green region</p>
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67

Temporal Lobe

name the yellow region

<p>name the yellow region</p>
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68

Cerebellum

name the red/orange region

<p>name the red/orange region</p>
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69

Pons

“bridge” of the brainstem, where nerve cross to opposite sides

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70

Thalamus

name the top beige region

<p>name the top beige region</p>
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71

Midbrain

name the purple region

<p>name the purple region</p>
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72

Pons

name the blue region

<p>name the blue region</p>
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73

Medulla Oblongata

name the region below the blue section

<p>name the region below the blue section</p>
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