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| Conducts sensory impulses to the brain and motor impulses from the brain to the body |
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| The largest part of the brain in mammals. Composed of the frontal, parietal, occipital and temporal lobes |
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| Lies between the temporal bone and the lateral sulcus. Function sin memory, vision, learning, hearing and emotional behavior |
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| Thick folds in the surface of the cerebrum |
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| The second largest part of the brain in mammals, and the largest part of the brain in birds. The cerebellum is involved in the regulation of posture and balance, fine motor control of skeletal muscles, and repetitive movements |
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| Processes olfactory information and contains centers for reflex movements involved in eating, such as chewing, licking and swallowing |
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| Contains the nerve tracts and physically joins the cerebral hemispheres |
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| Also called the “mesencophalon” located above the pons. It is the smallest part of the brain stem and the orgin for the oculomotor trochlear, and trigeminal cranial nerves |
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| Located just above the medulla on the brain stem. Works with the medulla to control respiration. Helps regulate sleep. Is the orgin for the trigeminal, abducens, facial and vestibulocochlear cranial nerves |
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| Located on the bottom-center of the brain where two optic nerves cross |
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| arachnoid layer of meninges |
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| a vascular layer of connective tissue which functions to protect the brain and spinal cord |
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| gray matter of spinal cord |
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| this area is shaped like a butterfly or the H in the cross section. it is composed of neuron cell bodies, neuroglia cells, dendrites, and unmyelinated axons. it has three regions: the anterior, lateral, and posterior horns. the central canal is in the center of the gray matter |
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| dorsal root of spinal nerve |
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| these structures contain the axons of the autonomic sensory neurons |
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| this area contains the cell bodies of somatic and autonomic sensory neurons |
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| these are the nerve tracks that connect the spinal cord with various regions of the body |
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| a mixed nerve divided into three parts. the divisions originate in teh face,jaws, mouth, tongue, scalp and terminate in teh pons. its sensory function is to transport information from various touch receptors on the face. its motor function is chewing |
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| a mixed nerve with motor neurons originating in the pons. sensory functions are the reception of taste stimuli for the anterior two-thirds of the tongue, and the position of face and scalp muscles |
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| a mixed nerve originaing int eh medulla and the upper cervical portions of the spinal cord. controls swallowing and movemtns of the head, neck and sholders. sensory function is to provide info on teh position of those muscles |
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| lout touch when the hair is displaced |
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| light touch and low freq. vibrations |
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| lamellated or pacinian corpuscles |
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| high freq. vib, pressure, stretch, and tickling |
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| these cells form the capsule surrounding the taste receptor cells. these cells support and protect the receptor cells |
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| apx 50 receptor cells in a taste bud. has a microvilli called a "taste hair" prodtruding througha pore on teh apical surface of the taste bud. these hairs are teh receptor surface for taste stimuli |
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| these cells are found peripherally on the base of a taste bud. they develop into supporting cells and then into receptor cells which live about 10 days |
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| these are small, spike-like projections found all over the tongue. they are the most abundant papillae, but lack taste buds. they roughen the tongue and make food manipulation easier |
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| the connective tissue beneath the olfactory epithelium |
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| columnar epithelial cells found in the olfactory epithelium between the olfactory receptor cells |
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| these are mucus glands found in the lamina propria that moisten olfactory epithelium and dissolve odor molecules |
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| the passageway that directs sound waves from the auricle to the tympanic membrane |
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| secrete cerumen or earwax into theh external auditory canal. located at the base of hairs that line the canal. helps prevent foreign substan. from reaching teh delicate tympanic membrane |
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| a small skeletal muscle which protects the oval window by dampening the vibration of the stapes in response to loud noises |
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| a small skeletal muscle which limits movemnt of ossicles and increases tension of the tympanic membrane to prevent damage in response to loud, prolonged noises |
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| a part of the bony labyrinth resempling a snail shell. contain the conchlear duct |
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| a part of the bony labyrinth containing semicirucular ducts |
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| located superior to the eye, partially shade they eyes, and protect them from sweat |
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| white of the eye. tough tendon-like layer, contains dura matter of the brain arround the optic nerve. it shapes the eye and its the insertion point for the six muscles which control eye movements |
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| lies just under the cornea. the layer to which we attribute eye color. composed of two layers of pupilary muscles that control the diameter of the pupil, and thus the amount of light entering the eye. |
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| a thick ring of tissue attached to, and lies just underneath the iris. changes the lens shape to focus light onto the retina |
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| located beneath the iris and held in teh center of the pupil by suspending ligaments extending from the ciliary body. focuses an image on teh retina by changing shape under the influence of teh ciliary muscles |
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| photoreceptor cells responsible for high acuity color vision. only operate in bright light. there are three types of cones: sensitive to red, green or blue light |
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| dvorine pseudo-isochromatic |
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