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Muscles & nervous
Chapter 9-10
| Nervous system tree | Cns central nervous system the brain and spinal cord |
| Pns peripheral nervous system | Information in and out |
| Somatic nervous system | Voluntary skeletal muscles |
| Autonomic nervous system | Involuntary glands smooth muscle cns and cardiac muscle |
| Symethic | Motor commands sympathy engaged |
| Parasympathetic | Relaxes you floaty |
| Sensory neuron | Has information to cns affrent neuron |
| Motor neuron | Effent neuron |
| Inter- | Interacting neuron internerons brain and spinal cord |
| Dendrites | Neuron makes neurons |
| Axon | Where pass action message down release chemical message |
| Multiple sclerosis | Destruction of myelin sheaths in cns by immune response myelin attack by person antibodies will not get contract will cause fatigue weakness stop atrophy mood problems numb limbs |
| Neuroglia | Provide structure support for neuron said in formation of synapses |
| Cns | Central nervous system |
| Astrocytes | Connects neurons to blood vessels |
| Ollgodendrocytes | Myelinate cns axons |
| Microglia | Phagocytic cell provides structural support |
| ependyma or enedymal cells | Line central canal spinal cord and ventricles of brain and spinal cord covers choroidpiexuses |
| Depolarized | If membrane protentional becomes less negative more positive |
| Hyperporized | Becoming more negative |
| Vesicles trafficking | Tempture drops |
| Opiate drugs | Morphine painkillers from poppy plant |
| Endorphians | Human body produces opiates. Which can be addictive useful for server pain |
| Antagonist | Drug that binds to receptor blocks neurontransmitter binding |
| Agonist | Drug that activates receptor causing action potential or aiding in binding of neurotransmitter |
| Amphetamines | Enhance noriephrine activity elevation alterness and mood |
| Facial expression muscles | small and in the dermis paralysis causes sag found in scalp forehead around the eyes nose mouth and the neck |
| Four major muscles | temporalis, masseter, lateral pterygoid, medial pterygoid |
| TMJ Syndrome Temporomandibular joint | articulation problem between mandibular condyle of mandidble and mandibular fossa of temporal bone |
| Pectoral girdle hip bone muscles | originate on axial skeleton and insert on to clavicle or scapula |
| hamstring group | main function is to bend knees during walking running climbing stairs and jumping |
| Quadriceps group | four separate muscles that fuse into one common tendon patella |
| dendrites | receive input |
| sensory receptors | at the end of neurons determined sensory integrative and motor |
| somatic nervous system | voluntary communicaates to the central nervous system to skeletal muscles causing contraction |
| autonomic nervous system | communicates instructions to the central nervous system that control viscera heart and various glands |
| synaptic cleft | ends of neuron |
| schwann cells | large axons of peripheral neurons in lipid rich sheaths |
| multipolar neuron | many processes arising from it cell body |
| ganglia | nervous tissue in a multipolar neuron |
| bipolar neuron | has two processes from either end |
| interneurons | in the brain and spinal cord rely on information |
| unipolar neuron | cell body with a single process that divides into two branches and functions as a axon |
| motor neuron | conducts impulses from the brain or spinal cord out the effects muscles or glands |
| ependyma | cuboidal or columnar cells in shape and many have cilia |
| satellite cells | small cuboidal cells that surround cell bodies of neurons in ganglia |
| presynapic neuron | sender to the synapse muscle or glandular cell |
| resting potential | not sending impulses |
| membrane potential | potential difference across cell membrane |
| action potential and threshold potential | neurons being depolarized -55 all or nothing response |
| synaptic transmission | released neurotransmitter molecules diffuse across the synaptic cleft and bind to receptors on the post synaptic cell membrane |
| neurotransmitters | neuron system produces 100 different types in the brain alone |
| Acetylcholine | controls skeletal muscle actions |
| norepinephrine` | creates a sense of well being low levels may lead to depression |
| dopamine | creates a sense of well being deficiency in some brain areas associated with Parkinson disease |
| serotonin | primarily inhibitory leads to sleepiness action is blocked by LSD enhanced by selective serotonin rep take inhibitor antidepressant drugs |
| histamine | release in hypothalamus promotes alertness |
| GABA | generally inhibitory |
| Enkephalins | increase during periods of painful stress |