Nervous System

Front 1

Autonomic reflexes

Back 1

Regulates smooth muscle, glands, digestive system, heart and blood

Hint 1

Automatic reflexes

Front 2

Somatic reflexes

Back 2

Activation of skeletal muscles

Hint 2

Voluntary

Front 3

Central nervous system

Back 3

Brain and spinal cord

Front 4

Peripheral nervous system

Back 4

Nerves outside the brain and spinal cord

Front 5

Axon

Back 5

Conduct impulses AWAY from the cell body

Front 6

Dendrites

Back 6

Conduct impulses TOWARD the cell body

Front 7

Nodes of Ranvier

Back 7

Gaps formed between the myelin sheath

Front 8

Cell body

Back 8

Produces all protein for the dendrites, axons, and synaptic terminals

Front 9

Chromatophilic

Back 9

Granules that are prevalent in a neuron's cytoplasm

Front 10

Myelin

Back 10

Dielectric material that forms a layer of myelin sheath

Front 11

Myelin sheath

Back 11

A protective covering that surrounds the axons

Front 12

Nucleus

Back 12

Controls the cell

Front 13

Oligodendrocytes

Back 13

Produce myelin sheath around nerve fibers in the CNS

Front 14

Astrocytes

Back 14

Abundant, star-shaped cells and brace neurons

Front 15

Microglial cells

Back 15

Spider-like phagocytes; dispose of debris

Front 16

Schwann cella

Back 16

Forms myelin Sheath in the PNS and a jelly roll-like fashion

Front 17

Neurotransmitter

Back 17

Sends signal to the brain

Front 18

White matter

Back 18

Part of the brain that contains myelinated nerve fibers

Front 19

Gray matter

Back 19

Cell bodies and unmylenated fibers

Front 20

Action potential

Back 20

A short lasting event in which the electrical membrane potential of cell rapidly rises and falls

Front 21

Synapse

Back 21

Junction between nerves

Front 22

Reflex

Back 22

Rapid, predictable, and involuntary response to stimuli

Front 23

Autonomic

Back 23

Regulates involuntary organs

Front 24

Somatic

Back 24

Activates skeletal muscles

Front 25

Multipolar

Back 25

Many extensions from the cell body

Front 26

Bipolar

Back 26

One axon and one dendrites

Front 27

Unipolar

Back 27

Have short single process leaving the cell body

Front 28

Cervical enlargement

Back 28

Corresponds with the attachments of the large nerves which supply the upper limbs

Hint 28

3rd cervical and 2nd thoracic vertebra

Front 29

Lumbar enlargement

Back 29

A widened area of the spinal cord that gives attachment to the nerves which supply the lower limbs

Hint 29

L1- S2

Front 30

Gyri

Back 30

Ridges on the cerebral cortex and surrounded by one sulci or more

Front 31

Sulcus

Back 31

Depression or groove in the cerebral cortex and surrounds gyri creating the characteristic folded appearance of the brain

Front 32

Fissure

Back 32

A groove, natural division, deep furrow,elongated cleft or tear in various part of the body

Front 33

Sensory

Back 33

Carry impulses from the sensory receptors

Front 34

Motor

Back 34

Carry impulses from the CNS

Front 35

Lateral fissure

Back 35

A deep fissure of the cerebral cortex separating the temporal lobe from the frontal and parietal lobes

Front 36

Longitudinal fissure

Back 36

The largest and deepest grove between the medial surfaces of the cerebral hemisphere

Front 37

Transverse fissure

Back 37

Inferior to the cerebrum and superior to the cerebellum

Front 38

Dura mater

Back 38

The outermost and most fibrous meninges covering the brain and the spinal cord

Front 39

Arachnoid mater

Back 39

Thin, weblike middle membrane

Front 40

Pia mater

Back 40

Follow irregular contours of the spinal cord surface

Front 41

Corpus callosum

Back 41

Connects the two hemispheres of the brain