Chapter 10
What are the two divisions of the nervous system? What is apart of each?
Central (brain and spinal cord) and Peripheral (nerves)
Dura mater, Arachnoid mater, Pia mater
What are the 5 main sense receptor types?
Chemoreceptors, pain receptors, thermoreceptors, mechanoreceptors, photoreceptors
What is the largest part of the brain?
Cerebrum
What do ventricles contain?
cerebrospinal fluid
What are the 3 main functions of the nervous system?
Sensory, Integrative, Motor
What are the four association areas of the brain?
Frontal lobe, parietal lobe, temporal lobe, occipital lobe
What is the difference between Meissner and Pacinian corpuscles?
Meissner: detect fine touch
Pacinian: detect heavy pressure and vibrations
What is sensory adaptation?
ability to ignore unimportant stimuli
Absolute: time when threshold stimulus does not start another action potential
Relative: time when stronger threshold stimulus can start another action potential
What creates myelin in the CNS?
What creates myelin in the PNS?
Oligodendrocytes; Schwann Cells
What are the 5 parts involved in a reflex arc?
receptor, sensory neuron, interneuron, motor neuron, effector
Red (erythrolabe), Green (chlorolabe), Blue (cyanolabe)
What is resting membrane potential?
-70 millivolts
What type of sense receptor is responsible for taste?
Chemoreceptors
Classified by # of processes; Multipolar neuron, bipolar neuron, unipolar neuron
______ tracts carry sensory information to the brain.
______ tracts carry motor impulses away from the brain.
Ascending;Descending
What is referred pain?
When pain may feel as if it's coming from some other part of the body
If you are being chased by a bear, is the sympathetic division or parasympathetic division active?
Sympathetic
What is the difference between convergence and divergence?
Convergence: a group of 2 or more neurons coming into one single neuron
Divergence: a single neuron sending information to multiple neurons
What is saltatory conduction?
Fastest method of action potential transmission; process of an electrical impulse traveling down a myelinated axon by jumping from node to node
How many cranial nerves are there?
How many can you name?
12 cranial nerves
Olfactory, optic, oculomotor, trochlear, trigeminal, abducens, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, hypoglossal
If light passes through a convex lens, will light converge or diverge?
Converge
What type of pain is associated with A-delta fibers? What type of pain is associated with C-delta fibers?
sharp pain; dull aching pain
What is the pathway for sound waves?
Auricle --> EAM --> Tympanic membrane --> auditory ossicle --> oval window