Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/54

Click to flip

54 Cards in this Set

  • Front
  • Back
______ is many organs working together for a common thing
organ system
______ division tends to arouse the body for action, fight or flight.
sympathetic
_____ division prepares you to be relaxed.
parasympathetic
_____ makes proteins
ER
_____ holds cell and gives it shape.
cytoskeleton
2 ways nervous system can be broken down based on anatomical location
central- brain & spinal cord
peripheral
_____ is the primary site for recieving signals from other neurons.
dendrites
Do neurons undergo mitosis?
rarely, if ever
Which has better polyunsaturated fats, baby formula or breast milk?
breast milk
_____ is an inicator of aging from wear and tear on lysosomes.
lipofuscin
3 universal properties of neurons
1) excitability/irritability
2) AP conduction
3) neurotransmitter secretion
Dumping serotonin to make it contract is and ex. of ________.
neurotransmitter secretion
3 functional classes of neurons
1) sensory (afferent)
2) interneurons (association)
3) motor (efferent)
_____ neuron brings info. into central nervous system
sensory (afferent)
_____ neuron carries info. to the other side; inbetween
interneurons (association)
_____ conducts signals from the CNS to effectors such as muscles and glands; leaving.
motor (efferent)
glia cells are not neurons b/c they aren't exciteable and can't send an ________.
action potential
3 primary types of neuron
1) Multipolar
2) Bipolar
3) Unipolar
_____ neuron is the most common in the body.
multipolar
_____ neuron is associated with smell.
bipolar
Where is the soma placed in a unipolar neuron?
off to the side
Which of the 3 primary types of neurons contain many dendrites instead of 1 main dendrite?
multipolar
In neurons passing ______ makes neurons exciteable.
info.
In neurons, the wave of self-promoting depolarization is called an __________.
action potential
Which are there more of, neuroglial cells or neurons.
neuroglial cells
Neuroglial cells are critical for the support of neuron _____.
function
Are neuroglial cells exciteable?
no, so they can't send an action potential
4 types of nonexciteable glia cells of the CNS
1) Astrocytes
2) Ependymal cells
3) Microglial cells
4) Oligodendrites
_____ cell composes 90% of brain tissue, supports/ protects neurons, and is found in the blood brain barrier.
Astrocytes
_____ cells produce cerebral spinal fluid.
Ependymal
______ cells are macrophages of the CNS, protect nervous tissue from infection, and help clean up dead cells.
Microglial
______ wrap around neurons in CNS.
oligodendrites
2 cell type of PNS
1) satellite cells
2) schwann cells
_____ cells are near the soma in ganglion.
satellite
_____ cells wrap around neurons in the PNS.
schwann
2 types of supportive cells for AP conduction
1) oligodendrites
2) schwann cells
____ form myelin sheath around axons in the brain/CNS
oligodendrites
In ____ disease the oligodendrocytes and myelin sheaths of the CNS dteriorate.
MS
_____ cells form from myelin sheath around axons in the PNS
schwann
_____ cells aid in regeneration of damaged nerve fibers.
schwann
The myelin sheath is very rich in _______ fats and sensitive to toxic lipids.
polyunsaturated
The myelin sheath does not permit electrical conduction, so ____ cannot pass through.
ions
The gaps of exposed axolemma are called ______.
Nodes of Ranvier
Unmyelinated neurons have limits to their function and are especially poor at _________.
neuronal regeneration
Myelin sheaths help protect neurons and help to conduct action potential at a ______ rate or speed.
high
____ is the source of mRNA and most biosynthesis.
soma
_____ describes how things get to the synaptic ending (fast or slow).
axonal transport
mm/day for fast axonal transport
20-400
3 daily use materials for fast axonal transport
1) organelles
2) vesicles
3) proteins
3 pathogens of fast axonal transport
1) polio
2) herpes
3) rabies
If you know where the ______ entered a neuron, you can time the appearance of symptoms in the CNS to the rate of transport.
pathogen
mm/day for slow axonal transport
0.5 to 10mm/day
Which axonal transport provides materials for axonal growth/repair/regeneration, fast or slow?
slow
______ describes how sodium and potassium ions distribute across the plasma lipid bilayer when an excitable cell (ex. myofiber or neuron) is at rest.
resting membrane potential