The Nervous System
About this set
Created by:
jdoppster on March 9, 2010
Subjects:
Classes:
Elizabeth, Mr. Dopp 7th Grade Science
Log in to favorite or report as inappropriate.
Order by
116 terms
Terms | Definitions |
|---|---|
 synapse | A ________ is a small space across which an impulse travels to move from one neuron to another. |
| central | The ________ nervous system is made up of the brain and spinal cord. |
| peripheral | The ________ nervous system is made up of all the nerves outside the brain and spinal cord. |
| dendrite | What is the branch part of the neuron that receives messages and sends them to the cell body? |
| axon | What is the branch part of the neuron that transports messages away from the cell body? |
| neuron | A ________ is made up of a cell body, dendrite, and axon. |
| reflex | When a movement causes the spinal cord to interpret an impulse from the brain from sensory receptors this movement is called a ________. |
| spinal cord | Which part of the body is made up of bundles of neurons that carry impulses from all parts of the body to the brain and from the brain to all parts of the body? |
| homeostasis | The regulation of steady, life-maintaining conditions inside an organisms is called ________. |
| cerebrum | This is the largest part of the brain. |
| cerebellum | This part of the brain coordinates voluntary muscle movements. |
| stimuli | The senses act as the body's alert system, reacting to ________ and transmitting impulses to the brain. |
| light rays | The eye detects ________ ________ and transmits impulses to the brain through the optic nerve. |
| optic nerve | The eye detects light rays and transmits impulses to the brain through the ________ ________. |
| sound waves | The ear, along with detecting and transmitting ________ ________, also controls the body's balance by reacting to motion and gravity. |
| balance | The ear, along with detecting and transmitting sound waves, also controls the body's ________ by reacting to motion and gravity. |
| olfactory cells | The ________ ________ in the nasal passages detect molecules in the air, transmitting these impulses as odors. |
| molecules | The olfactory cells in the nasal passages detect ________ in the air, transmitting these impulses as odors. |
| taste buds | On the tongue ________ ________ can detect five different stimuli: sweet, sour, bitter, salty, and the taste of MSG. |
| sweet | The taste buds on your tongue can detect the stimuli of ________, sour, bitter, salty, and the taste of MSG. |
| sour | The taste buds on your tongue can detect the stimuli of sweet, ________, bitter, salty, and the taste of MSG. |
| bitter | The taste buds on your tongue can detect the stimuli of sweet, sour, ________, salty, and the taste of MSG. |
| salty | The taste buds on your tongue can detect the stimuli of sweet, sour, bitter, ________, and the taste of MSG. |
| stimulus | A ________ is any change inside or outside your body that brings about a response in a living organism. |
| neurons | Your nervous system is made up of ________ which are made up of a cell body and branches of dendrites and axons. |
| dendrite | This is the part of the neuron that receives messages and send them to the cell body. |
| axon | This is the part of the neuron that carries messages away from the cell body. |
| impulses | Messages carried by nerve cells are called ________. |
| three | You have ________ kinds of nerve cells. |
| sensory | Nerve cells that receive information and send impulses to the brain or spinal cord are called ________ neurons. |
| interneurons | Nerve cells that relay impulses from sensory nerve cells to motor nerve cells are called ________. |
| motor | Nerve cells that conduct impulses from the brain to muscles and glands throughout your body are called ________ neurons. |
| touch | Nerve cells do not ________ each other, yet still pass impulses to each other. |
| impulses | Nerve cells do not touch each other, yet still pass ________ to each other. |
| space | A synapse is a ________ between nerve cells. |
| synapse | A ________ is a space between nerve cells. |
| chemical | When an impulse reaches the end of an axon, the axon releases a ________. |
| dendrite | When an impulse reaches the end of an axon, the axon releases a chemical that flows across the synapse and relays the impulse to the ________ of the next neuron. |
| brain | The ________ coordinates all of your body activities. |
| cerebrum | This is the part of the brain that interprets impulses from the senses, stores memory, and controls movements. |
| cerebrum | Thinking takes place in this part of the brain. |
| cerebrum | This is the largest part of the brain. |
| cortex | The outer layer of the brain is called the ________, which allows more complex thoughts to be processed. |
| cerebellum | This part of the brain is located behind and under the cerebrum. |
| cerebellum | This part of the brain interprets stimuli from the eyes, ears, muscles, and tendons. |
| cerebellum | This part of the brain coordinates voluntary muscle movements, maintains muscle tone, and helps maintain balance. |
| brain stem | The ________ ________ is the part of the brain the extends from the cerebrum and connects it to the spinal cord. |
| brain stem | What part of the brain is made up of the midbrain, the pons, and the medulla? |
| medulla oblongata | What part of the brain stem controls involuntary actions such as heartbeat, breathing, and blood pressure? |
| spinal cord | Which part of the nervous system is made up of bundles of nerve cells that carry impulses to and from the brain? |
| peripheral | The ________ nervous system connects your brain and spinal cord to the rest of your body. |
| two | The peripheral nervous system has ________ systems. |
| somatic | In the peripheral nervous system the ________ system controls voluntary actions. |
| autonomic | In the peripheral nervous system the ________ system controls involuntary actions. |
| injury | Any ________ to the brain or spinal cord can be serious. |
| paralysis | Injury to the spine can result in loss of muscle movement called ________. |
| safety gear | It is important to wear ________ ________ when playing sports or riding in a car or on a bicycle. |
| reflex | A ________ is an involuntary, autonomic response to a stimulus controlled by the spinal cord. |
| alcohol | Drugs like ________ and caffeine affect your nervous system. |
| caffeine | Drugs like alcohol and ________ affect your nervous system. |
| slows | Alcohol ________ the activities of the central nervous system. |
| speeds | Caffeine ________ up the activity of the central nervous system. |
| five | Your body has ________ senses. |
| retina | When light energy enters your eye the cornea and lens focus it onto the ________. |
| rods | The light energy that enters your eye stimulates the ________ and cones located in your retina. |
| cones | The light energy that enters your eye stimulates the rods and ________ located in your retina. |
| optic nerve | The rods and cones send impulses to the ________ ________, which carries them to the visual area of the cortex. |
| nearsighted | When light is focused in front of the retina a person is ________. |
| farsighted | When light is focused in behind the retina a person is ________. |
| front | When light is focused in ________ of the retina a person is nearsighted. |
| behind | When light is focused ________ the retina a person is farsighted. |
| concave | To correct nearsightedness a person needs to wear a ________ lens which is thicker at the edges than in the middle. |
| convex | To correct farsightedness a person needs to wear a ________ lens which is thicker in the middle than at the edges. |
| sound waves | When an object vibrates, it produces ________ ________ necessary for hearing sound. |
| pinna | Your outer ear called the ________ captures sound waves and sends them to the ear canal. |
| eardrum | In the middle ear, sound waves cause the ________ to vibrate. |
| hammer | In the middle ear when the eardrum vibrates it will vibrate tiny bones called the ________, anvil, and stirrup. |
| anvil | In the middle ear when the eardrum vibrates it will vibrate tiny bones called the hammer, ________, and stirrup. |
| stirrup | In the middle ear when the eardrum vibrates it will vibrate tiny bones called the hammer, anvil, and ________. |
| cochlea | In the inner ear, vibrations cause the fluids in the ________ to vibrate, stimulating nerve endings. |
| balance | The cristae ampullaris and the maculae in the middle ear control the body's ________. |
| molecules | Food and other objects give off ________ into the air. |
| olfactory cells | When you smell, molecules from food and other objects stimulate nerve cells called ________ ________ in your nasal passages. |
| taste buds | What are the major sensory receptors for taste? |
| taste buds | Your tongue contains ________ ________ that help you to sense tastes. |
| internal organs | For your sense of touch sensory receptors are found in ________ ________ and skin. |
| skin | For your sense of touch sensory receptors are found in internal organs and ________. These sensory receptors can pick up changes in touch, pressure, pain, and temperature. |
| outer ear |  In this picture of ear structure what is letter "A" ? |
| middle ear | In this picture of ear structure what is letter "B" ? |
| inner ear | In this picture of ear structure what is letter "C" ? |
| pinna | In this picture of ear structure what is letter "M" ? |
| ear canal | In this picture of ear structure what is letter "L" ? |
| eardrum | In this picture of ear structure what is letter "J" ? |
| malleus | In this picture of ear structure what is letter "K" ? |
| incus | In this picture of ear structure what is letter "H" ? |
| stapes | In this picture of ear structure what is letter "I" ? |
| cochlea | In this picture of ear structure what is letter "F" ? |
| semicircular canals | In this picture of ear structure what is letter "D" ? |
| eustachian tube | In this picture of ear structure what is letter "G" ? |
| auditory nerve | In this picture of ear structure what is letter "E" ? |
| cornea |  In this picture of eye structure what is letter "B" pointing to? |
| pupil | In this picture of eye structure what is letter "C" pointing to? |
| lens | In this picture of eye structure what is letter "E" pointing to? |
| scelera | In this picture of eye structure what is letter "A" pointing to? |
| retina | In this picture of eye structure what is letter "J" pointing to? |
| optic nerve | In this picture of eye structure what is letter "G" pointing to? |
| retinal artery | In this picture of eye structure what is letter "I" pointing to? |
| retinal vein | In this picture of eye structure what is letter "H" pointing to? |
| scelera | In this picture of eye structure what is letter "F" pointing to? |
| farsightedness |  Does this picture show farsightedness or nearsightedness? |
| nearsightedness |  Does this picture show farsightedness or nearsightedness? |
| dendrite |  In this picture of neuron structure what is letter "A" pointing to? |
| cell body | In this picture of neuron structure what is letter "B" pointing to? |
| nucleus | In this picture of neuron structure what is letter "C" pointing to? |
| myelin sheath | In this picture of neuron structure what is letter "D" pointing to? |
| axon | In this picture of neuron structure what is letter "E" pointing to? |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.