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| The central nervous system is comprised of the |
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| The cranial and spinal nerves are known as the |
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| peripheral nervous system |
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| The basic structure or unit of the nervous system |
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| A nerve cell which transmits nerve impulses from the body to the brain and back to the body are called |
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cell body-contains the cell nucleus;
dendrites-branch like structures that receive impulses and send them to the cell body;
axon-sends impulses away from the cell body;
myelin-white faty tissue thaat covers the axon;
terminal end fibers-branching fibers that lead the impulse away from the axon;
synapse-space between neurons or a neuron and an organ. |
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| The _____ transmits impulses to all parts of the body. |
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| largest section of the brain |
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| attaches brain to the brainstem |
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| provides nerve conduction pathways to and from the brain |
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| called the "bridge" nerve cells cross from one side of the brain to control another side |
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| lowest part of the brainstem, controls respiration, heart rate, and blood pressure |
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| relays nerve impulses to the sense organs of the body |
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| The _____ is the outer layer of the cerebrum. |
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| responsible for motor function |
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| responsible for hearing and small |
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| receives and interprets nerve impulses from the sensory receptors located throughout the body |
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| The _____are three layers of membranes that surround and protect the brain and spinal cord. |
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| _____ _____ flows in and around the brain and spinal cord and cushions the brain and spinal cord and also provides some nutrition to those structures. |
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| nerves which carry impulses from the body to the brain. |
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| nerves which carry impulses from the brain to the appropriate body structure |
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| responsible for voluntary movements and responses such as walking, talking, and swimming. |
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| responsible for involuntary movement and reponses such as hormone secretion, heart rate, blood flow, and digestive system functions. |
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| Physician who specializes in system diseases |
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| progressive and extremely dibilitating deterioration of an individual's intellectual functioning. |
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| pain in the head; headache |
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| dilation of a cerebral artery that may put pressure on cerebral tissue and interfere with cerebral function. |
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| presence of an atherosclerotic clot in a cerebral blood vessel that causes death of a specific portion of brain tissue |
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| occlusion or rupture of a cerebral blood vessel resulting in decreased blood flow to the affected area and death of a specific portion of brain tissue; also called a stroke |
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| violent jarring, shaking, or other blunt nonpenetrating injury to the brain; may or may not involve loss of consciousness |
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| progressive and irreversible deterioration of memory, judgment, and other thought processes. |
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| inflammation of the brain |
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| recurring episodes of excessive or irregular electrical activity of the central nervous system; commonly called seizures |
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| paralysis of one side of the body |
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| abnormal accumulation of cerebrospinal fluid around the brain often causing swelling of the head; commonly called "water on the brain" |
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| inflammation of the meninges of the brain and/or spinal cord |
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| severe sharp pain of a nerve or along the course of a nerve |
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| paralysis of the lower half of the body, including the legs |
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| excessive irregular electrial activity of the CNS associated with epilepsy |
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| acute viral infection characterized by an inflammation of a spinal or cranial nerve pathway that produces painful vesicular eruptions on the skin. |
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| temporary interference or interruption of the blood supply to a portion of the brain |
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| transient ishemic attack (TIA) |
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| laboratory analysis of cerebrospinal fluid to detect the presence of bacteria, blood, and malignant cells and the measure glucose and protein content. |
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| cerebralspinal fluid analysis |
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| process of recording the electrical activity of the brain |
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| insertion of a needle into the subarachnoid space, usually between the third and fourth lumbar vertebrae, to withdraw cerebrospinal fluid; also called a spinal tap |
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| The outer layer of the eye |
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| The middle layer of the eye |
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| The inner layer of the eye |
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| tough fibrous tissue that maintains the shape of the eyeball, serves as a protective covering, and is commonly called the "white of the eyes" |
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| mucous membrane that lines the outer surface of the eye and inside of the eyelid |
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1. sclera
2. cornea
3. conjunctiva |
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| Middle layers of the eye: |
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1. Choroids
2. Iris
3. Pupil
4. Lens |
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| layer of tissue beneath the sclera that contains blood vessels that supply blood and nutrients to the eye |
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| muscular ring that surrounds the pupil and adjusts the opening of the pupil to control the amount of light that enters the eye. This also gives eyes their unique color. |
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| The opening through which light enters the eye. |
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| Lies behind the pupil and focuses light rays entering the eye onto the retina. |
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1. Retina
2. Rods
3. Cones
4. Optic Disk
5. Optic Nerve |
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| Sensory nerve tissue that coats the inside of the eye. |
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| Responsible for vision in dim light and also peripheral vision. |
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| Responsible for vision in bright light, central vision, and color vision |
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| Located at the back of the eye, is the area where nerve endings of the retina come togehter to form the optic nerve |
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| Transmits impulses to the occipital lobe of the brain. |
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| The fluid that maintains the proper pressure within the eye |
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| clear, jelly-like substance which gives the eyeball its shape |
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| The bony cavity of the skull that houses and protects the eyeball. |
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| individual who measures and fits eyeglasses |
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| medical doctor who specializes in diseases, disorders, and treatments of the eye |
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| doctor of optometry, but not a medical doctor, measures visual acuity, prescribes corrective lenses and may diagnose some eye problems |
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| inflammation of the eyelids |
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| increased intraocular pressure |
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| impaired vision of close objects; farsightedness. |
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| impaired vision of distant objects; nearsightedness. |
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| abnormal sensitivity to light |
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| impaired vision due to aging |
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| Cartilaginous flap that directs sound waves into the auditory canal. |
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| Transmits sound waves to the middle ear |
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| tympanic membrane-eardrum |
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| Three small bones of the middle ear |
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| Name the three small bones of the middle ear |
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Malleus=hammer
incus=anvil
stapes=stirrup |
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| connects the middle ear to the pharynx |
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| spiral or snail-shaped structure that contains auditory fluids |
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| receives sound wave vibrations and converts them into nerve impulses |
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| carries impulses to the brain |
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| physician who specializes in the study and treatment of diseases of the ear, nose, and throat |
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| infection and inflammation of the middle ear |
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| ringing sensation in the ear |
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