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4941783270adapting receptoris a decrease in sensitivities during a constant stimulus0
4941793796arachnoid villifingerlike projections of the arachnoid mater through which CSF returns to the venous blood supply1
4941798203autonomic reflexesreflexes not consciously perceived and involving responses of smooth muscle, cardiac muscle, and glands.2
4941815572blood brain barrierThe brain is protected from harmful chemicals in the blood stream by thicker walls surrounding the brains blood vessels.3
4941817717brain stempart of brain consists of medulla oblongata, pons, and midbrain4
4941832720circadian rhythmthe daily biological rhythms that occur in a 24-hour period5
4941836339cold receptorslocated in the stratum basale and activated by low temperatures6
4941855248conesCone-shaped visual receptor cells; located in retina; works best in bright light; responsible for viewing color; greatest density in the fovea7
4941859466rodsare photoreceptors that are stimulated even low light and allow night or dim vision8
4941879423corpus callosumThe large band of neural fibers connecting the two brain hemispheres and carrying messages between them.9
4941882171corpuscles of toughtactile corpuscles (or Meissner's corpuscles) are a type of mechanoreceptor. They are a type of nerve ending in the skin that is responsible for sensitivity to light touch10
4941897748CSFcerebrospinal fluid11
4941900835diencephalonconsists of thalamus, hypothalamus, and pineal gland12
4941916702dura materthick, outermost layer of the meninges surrounding and protecting the brain and spinal cord13
4941922943eustachian tubeA narrow tube between the middle ear and the throat that serves to equalize pressure on both sides of the eardrum14
4941928780extrinsic eye muscleSkeletal muscles that attach to the outside of the eyeball and to the bones of the orbit, include the superior, inferior, medial and laterial rectus muscles and superior and inferior oblique muscles15
4941934138first order neuronconducts the nerve impulse from the receptor to the spinal cord or brain stem16
4941943079gustatory cellstaste buds; cells receptors bind molecules dissolved in saliva; interpreted as taste17
4941943080hypothalamus controlledthirst, hunger, temperature, and emotional behavior18
4941959047interneuronsCentral nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs19
4941966703interoceptorsLocated in blood vessels, visceral organs, and nervous system; provide information about internal environment; impulses usually are not consciously perceived but occasionally may be felt as pain or pressure20
4941978019intraocular pressurea measurement of the fluid pressure inside the eye21
4941981444irisA ring of muscle tissue that forms the colored portion of the eye around the pupil and controls the size of the pupil opening.22
4941985049kinesthetic receptorsReceptors located in the muscles, joints, and skin that provide information about movement, posture, and orientation.23
4941991829major components of braincerebrum, diencephalon, brain stem, cerebellum24
4942011558muscle spindlesMuscle spindles are sensory receptors within the belly of a muscle that primarily detect changes in the length of this muscle. They convey length information to the central nervous system via sensory neurons25
4942026445nociceptorPain receptors. Nociceptors are found everywhere in the body except for the brain.26
4942034654olfactory receptorsnerve endings that act as the receptors for the sense of smell. Activated olfactory receptors are the initial player in a signal transduction cascade which ultimately produces a nerve impulse which is transmitted to the brain27
4942057312pairs of cranial nerves and spinal nerves12 pairs of cranial, 31 pairs of spinal28
4942059871perceptionsawareness of objects through any of the five senses29
4942065910post central gyriGyri in parietal lobe. posterior to central gyrus, contains primarysomatosensory cortex.30
4942094271primary motor areacontrols voluntary contraction of muscles. located in the precentral gyrus of each frontal lobe31
4942107643proprioceptionThe cumulative sensory input to the central nervous system from all mechanoreceptors that sense body position and limb movement.32
4942119577regulation of ANSThe hypothalamus, acts as an integrator for autonomic functions, receiving ANS regulatory input from the limbic system to do so. The autonomic nervous system has two branches: the sympathetic nervous system and the parasympathetic nervous system33
4942131646scleraWhite of the eye34
4942137874Which of the following types of neurons conduct sensory impulses from the brain stem and spinal cord to the thalamus?second order neuron35
4942151873sensation processStimulation of the sensory receptor, transduction of the stimulus, generation of nerve impulses, and integration of sensory input.36
4942164759How many sensory modalities can a single sensory neuron have?one37
4942235054The part of the cochlea that converts pressure waves (from sounds) into changes in membrane potentials is the:spiral organ38
4942244752Which of the following types of neurons conduct impulses from the thalamus to the primary somatosensory area of the cerebral cortex?third order neuron39
4942254555trigeminal nerve5th cranial nerve - the chief nerve of sensation for the face and the motor nerve controlling the muscles for chewing. 3 divisions - ophthalmic, maxillary, and mandibular.40
4942272112tympanic membraneThe eardrum. A structure that separates the outer ear from the middle ear and vibrates in response to sound waves.41
4942274782the mixed cranial nerve that is distributed from the head and neck into the thorax and abdomen and is the only cranial nerve that extends beyond the head and neck region would describevagus nerve42
4942315718activation energyEnergy needed to get a reaction started43
4942317255arrector pilia smooth muscle attached to hair follicles that causes "goose bumps" to appear on the skin when contracted44
4942322076basic life processesMetabolism, Responsiveness, Movement, Growth, Differentiation, and Reproduction45
4942344949cell junctionsCell junctions consist of multiprotein complexes that provide contact between neighboring cells or between a cell and the extracellular matrix.46
4942357718connective tissue charisteristicConnective tissue has three main components: cells, fibers, and ground substance. Together the ground substance and fibers make up the extracellular matrix47
4942366539contraction cycleAtp Hydrolysis, Cross bridge, Power stroke, detachment of myosin from actin48
4942379869endergonicaccompanied by or requiring the absorption of energy, the products being of greater free energy than the reactants49
4942394351flexionBending of a joint50
4942410651insertionThe attachment of a muscle tendon to a moveable bone or the end opposite the origin51
4942414889keratinocytesan epidermal cell that produces keratin52
4942424557layers of epidermisStratum corneum, lucidum, granulosum, spinosum, basalis53
4942428202metabolismChemical reactions in living organisms that are necessary to maintain life54
4942439442myofibrilskeletal muscle fiber55
4942445649myosin headpart of thick filament that binds to the actin on thin filaments and then pulls the thin filament back to contract it and releases it to relax56
4942452694nervous tissue characteristicsNeurons are highly specialized nerve cells that generate and conduct nerve impulses. A typical neuron consists of dendrites, the cell body, and an axon57
4942465692number of bones in the wristeight carpal bones—scaphoid, lunate, triquetral, pisiform, trapezium, trapezoid, capitate, and hamate— and five metacarpal bones—the first, second, third, fourth, and fifth metacarpal bones.58
4942593976originThe attachment of a muscle tendon to a stationary bone or the end opposite the insertion59
4942607191osteogenic cellundergo cell division and develop into osteoblasts60
4942614558pelvic girdle functionSupport weight, protect organs, muscle attachments, passes forces through hips61
4942618379polar covalent bondA covalent bond in which electrons are not shared equally62
4942620857properties of musclecontractility, excitability, extensibility, elasticity63
4942623729relative refractory period nervous system functionsa period after firing when a neuron is returning to its normal polarize state and will only fire again if the incoming message open impulse is stronger than usual; returning to arresting state64
4942632824S phaseS-phase (synthesis phase) is the part of the cell cycle in which DNA is replicated, occurring between G1 phase and G2 phase65
4942641969salta salt is an ionic compound that results from the neutralization reaction of an acid and a base66
4942656201salutatory conductionis the propagation of action potentials along myelinated axons from one node of Ranvier to the next node, increasing the conduction velocity of action potentials67
4942665292serous membrane"parietal serosa" (lines the cavity walls) and "visceral serosa" (covers organs in the cavity).68
4942695670synaptic cleftA microscopic gap called a synaptic cleft exists between the neurons. When a nerve impulse arrives at the axon terminal of one neuron, a chemical substance is released through the presynaptic membrane69
4942721782What part of the skeletal muscle cell releases calcium when stimulated by the T tubules?terminal cisterns if SR70
4942743005Calcium ions bind to the ________ molecule in skeletal muscle cells.troponin71
4942759996types of synovial jointsplane, hinge, pivot, ball-and-socket (condyloid and saddle)72
4942848110vertebral columnstarting at the neck: cervical vertebrae (7), thoracic or dorsal (12), lumbar (5), sacral (5,fused), coccyx or tailbone (4)73
4942852391yellow marrowfat storage74

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