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48 Cards in this Set
- Front
- Back
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what do you call a swollen lymph node? |
cancer |
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afferent nerves |
sensory, ascend |
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efferent nerves |
motor, descend
wider than afferent |
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what is the largest lymph organ? |
spleen |
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where is the spleen located? |
left hypochondriac region |
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what is a hills? (in the spleen) |
a hilus is an indentation at which the splenic artery enters, and the splenic vein and efferent lymphatic vessels leave. |
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what is the difference between lymph and plasma? |
plasma has a higher concentration of proteins? |
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what is included in the CNS? |
brain and spinal cord
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what is included in the PNS? |
cranial nerves and spinal nerves also contains: sensory or afferent neurons motor or efferent neurons
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three major subdivisions of the PNS? |
1.) voluntary autonomic nervous system: a.) somatic sensory neurons b.) somatic motor neurons 2.) involuntary autonomic nervous system: a.) autonomic sensory neurons b.) autonomic motor neurons 3.) involuntary enteric nervous system: a.) brain of the gut b.) enteric(refers to intestines) bacteria: ecoli
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what are neurons? |
cells that conduct impulses |
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what is the function of an axon? |
propagate impulse |
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dendrite function: |
receive incoming info |
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what do you call the junction between nerve and a gland? |
neuroglandular junction |
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EXAM: which of the following is not a neurotransmitter? |
acetylcholine, glutamate, GABA, glycine, norepinephrine, dopamine, serotonin, endorphins, nitric oxide |
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what is electrical excitability? |
the ability to respond to a stimulus and convert it into a nerve impulse (action potential). |
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are there centrioles in the NS? why |
no because nerves can't divide, but can repair. |
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what is known as the "pool" between two junctions? |
synaptic cleft |
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axonal fibers in CNS are called: |
tracts |
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axonal fibers in PNS are called: |
nerves |
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multipolar neurons |
usually have several dendrites and one axon; most neurons in the brain and spinal cord are of this type |
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bipolar neurons |
have one main dendrite and one axon;these are located in the retina, inner ear, and olfactory area of the brain |
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unipolar or pseudounipolar neurons |
sensory neurons have just one process extending from the cell body;this process branches to form a peripheral process and a central process |
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examples of specialized sensory nerves: |
nose tounge eye |
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cell bodies in the CNS: |
nuclei |
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cell bodies in the PNS: |
ganglia |
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diverging circuit define& example? |
in which presynaptic neuron forms synapses with several postsynaptic cells example: exercise |
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converging circuit define & example? |
in which several presynaptic neurons form synapses with a single post synaptic neuron example: you see chocolate, then you smell it, then taste it, then you feel happy |
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reverberating circuit define & example? |
in which once a presynaptic neuron is stimulated, it will cause the postsynaptic neuron to transmit a series of nerve impulses example:breathing |
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parallel after-discharge circuit define & example? |
in which a single presynaptic neuron stimulates a group of neurons, all of which form synapses with a common postsynaptic neuron example: stepping on a tac |
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which is the only part of the brain that can regenerate nerves? |
hippocampus |
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what is the main collecting duct of the lymphatic system? |
thoracic (left lymphatic duct) |
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what drains lymph from the upper right side of the body? |
right lymphatic duct |
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where are all blood cells in your body made from? |
bone marrow |
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process of lymph from entering to exiting a node |
afferent lymphatic vessels subcapsular sinus trabecular sinuses medullary sinuses efferent lymphatic vessels
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what is the order of the spinal meninges from outer to inner? |
1.) dura mater 2.) arachnoid mater 3.) subarachnoid space 4.) pia mater 5.) gray matter 6.) white matter
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what is the cone-shaped portion that tapers at the end of the spinal cord? |
conus medullaries |
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in an adult where does the conus medullaries end? |
between the first and second lumbar vertebrae.
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gray matter |
butterfly shape;the core of the spinal cord |
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white matter |
surrounds the gray matter |
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gray commissure |
a region of gray matter that connects the two wings of the buterfly |
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What do you find in posterior (dorsal) gray horn? |
sensory - somatic - autonomic/visceral
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how many pairs of spinal nerves do you have? |
31 pairs |
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the phrenic nerve arises from which plexus? |
cranial |
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subunits of brachial plexus |
roots, trunks, divisions, cords, branches
(Risk Takers Don't Cautiously Behave) |
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EXAM which of the following is a type of plexus? name all 4 Plexus |
cervical plexuses brachial plexuses lumbar plexuses sacral plexuses
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what is the major nerve of lumbar? |
Femoral outside of leg |
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what is the largest and thickest nerve in the body? |
sciatic nerve |
