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chap 8

chap 8
43問 • 2年前
  • MORALES, Chelsea Denise S.
    • 通報

    問題一覧

  • 1

    brain and spinal cord

    CNS

  • 2

    all neurons outside CNS

    PNS

  • 3

    receives stimulus from other neurons or sensory receptors

    Dendrite

  • 4

    -processes stimulus -contains a nucleus

    Cell body

  • 5

    transmits stimulus to a gland, muscle, organ, or other neuron

    Axon

  • 6

    - fatty, protective wrapping around axons -excellent insulator

    Myelin Sheath

  • 7

    gaps in myelin sheath where action potentials develop.

    Nodes of Ranvier

  • 8

    jumping of action potentials

    Saltatory Conduction

  • 9

    disease of myelin sheath that causes loss of muscle function

    Multiple sclerosis

  • 10

    many dendrites and a single axon

    Multipolar

  • 11

    one dendrite and one axon

    bipolar

  • 12

    one axon and no dendrites

    Pseudo-unipolar

  • 13

    • Supporting cells for neurons, More numerous than neurons, Can divide to produce more cells

    Neuroglia characteristics

  • 14

    -star-shaped - most abundant - form blood-brain barrier

    Astrocytes

  • 15

    produce and circulate cerebrospinal fluid (CSF)

    Ependymal Cells

  • 16

    -help remove bacteria and cell debris from CNS -Oligodendrocytes, produce myelin sheath in CNS

    Microglia

  • 17

    produce myelin sheath in PNS

    Schawnn cells

  • 18

    collection of dendrites and cell bodies

    gray matter

  • 19

    collection of axons and their myelin sheath

    white matter

  • 20

    -Outside of cell is more + (Na*) -Inside of cell is more - (K*)

    Resting membrane potential

  • 21

    -always open -K+ channels

    leak ion channels

  • 22

    -closed until opened by specific signal. - Na+ channels

    gated ion channels

  • 23

    -where an axon attaches to a muscle, gland, organ, or other neuron - involved with release of neurotransmitters

    synapse

  • 24

    involuntary response to a stimulus

    Reflexes

  • 25

    pick up stimulus in skin.

    Sensory receptors:

  • 26

    - send stimulus to interneurons in spinal cord.

    Sensory (afferent) neurons:

  • 27

    send response to effector.

    4. Efferent (motor) neurons:

  • 28

    muscle, gland, or organ

    effector

  • 29

    located in CNS and connect to motor neurons process stimulus.

    Interneurons (Association) neuron:

  • 30

    -two or more neurons synapse same neuron - allows info. to be transmitted in more than one neuronal pathway to converge into a single pathway.

    converging

  • 31

    - axon from one neuron divides and synapses with more than one neuron - allows info. to be transmitted in one neuronal pathway to diverge into 2 or more pathways.

    diverging

  • 32

    -center of spinal cord -looks like letter H or a butterfly

    Gray matter

  • 33

    -outside of spinal cord -contains myelinated fibers

    white matter

  • 34

    Contains 3 columns dorsal, ventral, lateral columns

    white matter in spinal cord

  • 35

    axons that conduct action potentials toward brain

    ascending tracts

  • 36

    axons that conduct action potentials away from brain

    descending tracts

  • 37

    contain axons which synapse with interneurons

    posterior horns

  • 38

    contain somatic neurons

    anterior horns

  • 39

    contain autonomic neurons

    lateral horns

  • 40

    -Spinal nerves C1-4 -Innervates muscles attached to hyoid bone and neck

    cervical plexus

  • 41

    -Originates from spinal nerves C5-T1 -Supply nerves to upper limb, shoulder, hand

    Brachial Plexus

  • 42

    Originates from spinal nerves L1 to S4 - Supply nerves lower limbs

    lumbosacral plexus

  • 43

    -Fluid that bathes the brain and spinal cord - Provides a protective cushion around the CNS - Produced in choroid plexus of brain

    Cerebrospinal fluid

    • chap 3 cell

    chap 3 cell

    MORALES, Chelsea Denise S. · 50問 · 2年前

    chap 3 cell

    chap 3 cell

    50問 • 2年前
    MORALES, Chelsea Denise S.

    TFN

    TFN

    MORALES, Chelsea Denise S. · 19問 · 2年前

    TFN

    TFN

    19問 • 2年前
    MORALES, Chelsea Denise S.

    Tfn

    Tfn

    MORALES, Chelsea Denise S. · 12問 · 2年前

    Tfn

    Tfn

    12問 • 2年前
    MORALES, Chelsea Denise S.

    Chap 7 muscle

    Chap 7 muscle

    MORALES, Chelsea Denise S. · 62問 · 2年前

    Chap 7 muscle

    Chap 7 muscle

    62問 • 2年前
    MORALES, Chelsea Denise S.

    Chap 4

    Chap 4

    MORALES, Chelsea Denise S. · 67問 · 2年前

    Chap 4

    Chap 4

    67問 • 2年前
    MORALES, Chelsea Denise S.

    chap 9

    chap 9

    MORALES, Chelsea Denise S. · 68問 · 2年前

    chap 9

    chap 9

    68問 • 2年前
    MORALES, Chelsea Denise S.

    chap 10

    chap 10

    MORALES, Chelsea Denise S. · 36問 · 2年前

    chap 10

    chap 10

    36問 • 2年前
    MORALES, Chelsea Denise S.

    chap 10

    chap 10

    MORALES, Chelsea Denise S. · 33問 · 2年前

    chap 10

    chap 10

    33問 • 2年前
    MORALES, Chelsea Denise S.

    chap 12 Heart

    chap 12 Heart

    MORALES, Chelsea Denise S. · 61問 · 2年前

    chap 12 Heart

    chap 12 Heart

    61問 • 2年前
    MORALES, Chelsea Denise S.

    chap 13

    chap 13

    MORALES, Chelsea Denise S. · 63問 · 2年前

    chap 13

    chap 13

    63問 • 2年前
    MORALES, Chelsea Denise S.

    chapter 13 vein

    chapter 13 vein

    MORALES, Chelsea Denise S. · 54問 · 2年前

    chapter 13 vein

    chapter 13 vein

    54問 • 2年前
    MORALES, Chelsea Denise S.

    lymphatic

    lymphatic

    MORALES, Chelsea Denise S. · 63問 · 2年前

    lymphatic

    lymphatic

    63問 • 2年前
    MORALES, Chelsea Denise S.

    digestive

    digestive

    MORALES, Chelsea Denise S. · 73問 · 2年前

    digestive

    digestive

    73問 • 2年前
    MORALES, Chelsea Denise S.

    respiratory

    respiratory

    MORALES, Chelsea Denise S. · 69問 · 2年前

    respiratory

    respiratory

    69問 • 2年前
    MORALES, Chelsea Denise S.

    Chap 5 micro

    Chap 5 micro

    MORALES, Chelsea Denise S. · 40問 · 1年前

    Chap 5 micro

    Chap 5 micro

    40問 • 1年前
    MORALES, Chelsea Denise S.

    問題一覧

  • 1

    brain and spinal cord

    CNS

  • 2

    all neurons outside CNS

    PNS

  • 3

    receives stimulus from other neurons or sensory receptors

    Dendrite

  • 4

    -processes stimulus -contains a nucleus

    Cell body

  • 5

    transmits stimulus to a gland, muscle, organ, or other neuron

    Axon

  • 6

    - fatty, protective wrapping around axons -excellent insulator

    Myelin Sheath

  • 7

    gaps in myelin sheath where action potentials develop.

    Nodes of Ranvier

  • 8

    jumping of action potentials

    Saltatory Conduction

  • 9

    disease of myelin sheath that causes loss of muscle function

    Multiple sclerosis

  • 10

    many dendrites and a single axon

    Multipolar

  • 11

    one dendrite and one axon

    bipolar

  • 12

    one axon and no dendrites

    Pseudo-unipolar

  • 13

    • Supporting cells for neurons, More numerous than neurons, Can divide to produce more cells

    Neuroglia characteristics

  • 14

    -star-shaped - most abundant - form blood-brain barrier

    Astrocytes

  • 15

    produce and circulate cerebrospinal fluid (CSF)

    Ependymal Cells

  • 16

    -help remove bacteria and cell debris from CNS -Oligodendrocytes, produce myelin sheath in CNS

    Microglia

  • 17

    produce myelin sheath in PNS

    Schawnn cells

  • 18

    collection of dendrites and cell bodies

    gray matter

  • 19

    collection of axons and their myelin sheath

    white matter

  • 20

    -Outside of cell is more + (Na*) -Inside of cell is more - (K*)

    Resting membrane potential

  • 21

    -always open -K+ channels

    leak ion channels

  • 22

    -closed until opened by specific signal. - Na+ channels

    gated ion channels

  • 23

    -where an axon attaches to a muscle, gland, organ, or other neuron - involved with release of neurotransmitters

    synapse

  • 24

    involuntary response to a stimulus

    Reflexes

  • 25

    pick up stimulus in skin.

    Sensory receptors:

  • 26

    - send stimulus to interneurons in spinal cord.

    Sensory (afferent) neurons:

  • 27

    send response to effector.

    4. Efferent (motor) neurons:

  • 28

    muscle, gland, or organ

    effector

  • 29

    located in CNS and connect to motor neurons process stimulus.

    Interneurons (Association) neuron:

  • 30

    -two or more neurons synapse same neuron - allows info. to be transmitted in more than one neuronal pathway to converge into a single pathway.

    converging

  • 31

    - axon from one neuron divides and synapses with more than one neuron - allows info. to be transmitted in one neuronal pathway to diverge into 2 or more pathways.

    diverging

  • 32

    -center of spinal cord -looks like letter H or a butterfly

    Gray matter

  • 33

    -outside of spinal cord -contains myelinated fibers

    white matter

  • 34

    Contains 3 columns dorsal, ventral, lateral columns

    white matter in spinal cord

  • 35

    axons that conduct action potentials toward brain

    ascending tracts

  • 36

    axons that conduct action potentials away from brain

    descending tracts

  • 37

    contain axons which synapse with interneurons

    posterior horns

  • 38

    contain somatic neurons

    anterior horns

  • 39

    contain autonomic neurons

    lateral horns

  • 40

    -Spinal nerves C1-4 -Innervates muscles attached to hyoid bone and neck

    cervical plexus

  • 41

    -Originates from spinal nerves C5-T1 -Supply nerves to upper limb, shoulder, hand

    Brachial Plexus

  • 42

    Originates from spinal nerves L1 to S4 - Supply nerves lower limbs

    lumbosacral plexus

  • 43

    -Fluid that bathes the brain and spinal cord - Provides a protective cushion around the CNS - Produced in choroid plexus of brain

    Cerebrospinal fluid