Bio 101 test study
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Divisions of the Nervous System | Central and Peripheral
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| central nervous system(CNS) consists of? | Brain and Spinal Cord
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| the 2 types of cells of the nervous system? | Neurons and glia
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| Neurons | Transmit signal
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| Glia | Caretakers of neurons
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| 2 of the major types of Glia | Astrocytes, Microglia
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| Astrocytes | Blood Brain Barrier
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| Microglia | remove microbes
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| Sensory neurons(afferent)(at) | sends the signal toward the brain
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| Motor neurons(efferent)(effect of) | sends the signal to the muscle
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| Interneurons(central, connecting neurons) | between neurons
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| Dendrites | sends signal toward the cell body
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| Axons | Sends signal away from the cell body
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| myelin is formed by? | Schwann cells in the PNS, Oligodendrocytes in the CNS
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| Endoneurium | within
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| Perineurium | surrounding
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| Epineurium | uppon(think like the skin)
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| polarization | at rest, slightly positive on the outside
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| Depolarization | Na+ions to rush inward; this causes inside to now become more positive and the outside to become more negative
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| Whats the purpose of myelin? saltatory conduction? | Membrane is covered with myelin, the impulse skips that section and jumps to another. (speeds up signal)
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| Synapse | Where we chemically send signal from one to another.
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| neurotransmitters | diffuse back into pre-synaptic knob-released at synapse by pre synaptic neuron
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| Diencephalon | hypothalamus
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| brainstem includes 3 structures | medulla oblongata, pons, midbrain
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| gyri | ridges
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| Frontal lobe | Voluntary movement(motor) somatic NS
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| Temporal lobe | on side by ears, primary auditory cortex(receives sensory info from ears)
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| Occipital lobe | vision
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| hypothalamus | control, maintains water balance(ADH), and sleep cycles
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| Brain stem | Medulla oblongata, pons, midbrain
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| medulla oblongata | vital centers
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| 1 of the 3 layers of coverings for the brain and spinal cord | dura mater-outer layer
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| Part of the PNS | Autonomic nervous system
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| autonomic nervous system | connect brain and spinal cord to glands, cardiac muscle, and smooth muscle
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| Main function of spinal cord | reflex center
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| reflex arc | 2 neuron arc(simplest), 3 neuron arc(interneurons)
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| Where do all interneurons lie? | within gray matter of spinal cord
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| autonomic nervous system | consists of motor neurons that conduct impulses from the CNS to cardiac muscle, smooth muscle, and glands
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| sympathetic nervous system | thoracolumbar system, fight or flight
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| parasympathetic nervous system | craniosacral system, rest and digest response(dominates unter normal everyday conditions.
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