Apologia Advanced Biology Module 7 | Baamboozle - Baamboozle

nerve diagram, label a, b, c, d, e.

a- epineurium b-fascicle c-axon d- endoneurium e-perineurium

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What is the difference between depolarization and repolarization

depolarization- Na channels open in response to a stimulus. Na rushes into the cell. Repolarization -Na channels close and K rush out of the cell.

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What neurons can heal and under what conditions?

PNS, nerves with Schwann cells, provided the cell body is alive and the axon is relatively lined up. (p208)

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If a stimulus causes an all or nothing action potential, how can we feel the difference between something warm and something hot?

The frequency of the action potentials

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Compare the maximum potential difference of each action potential when you tough something hot vs something warm?

no difference, action potentials work on the all or nothing principle

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What are spinal nerves?

PNS nerves that originate from the spinal chord (Cranial nerves are nerves that start in the brain)

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Where is, and how large is your sciatic nerve?

The size of your little finger, and from your lower back, through your butt and down your leg. It is the largest nerve in your body

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If neurons can’t perform mitosis, where do brain tumors come from?

The glial cells (neuroglia) a tumor is an overgrowth of cells (p203)

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What neuroglia make cerebrospinal fluid?

Ependymal cells (non ciliated) ependymal cells line the passages in the brain where CSF flows (p203) ciliated move the fluid around

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What is the difference between the sympathetic and parasympathetic nervous systems.

Sympathetic - fight or flight, parasympathetic - rest and repose (digestion, urination)

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Other team wins 10 points!

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neuron diagram. label f, i, d, j, c, b ?

f - nucleolus, i - cell body, d - golgi body, j - axon hillock, c - collateral axon, b - node of ranvier

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What is the somatic nervous system?

the system that transmits action potentials from the CNS to the skeletal muscles

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What is the difference between the afferent and efferent nervous system?

Afferent receives information from sensory receptors to the CNS, Efferent sends information from the CNS to the effector organs

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