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40 Cards in this Set
- Front
- Back
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organ system that carries out digestion
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digestive system
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liquid that wets food and contains enzymes that help break food apart
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saliva
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help break food apart chemically
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enzymes
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tube lines with muscles
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esophogus
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slippery material that helps food down esophagus
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mucus
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front teeth for biting
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incisors
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mddle teeth for cutting & tearing
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canines
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back teeth for crushing & grinding
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molars
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muscular sac that helps break down food
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stomach
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How long does stomach churn food
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4-5 hours
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makes enzymes that break down many kinds of nutrients
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pancreas
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makes an enzyme that breaks down fats
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liver
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Where are most nutrients aborsbed
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small intestine
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narrow tube 20 feet long
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small intestine
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How do nutrients pass into the blood?
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villi
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tiny fingerlike bumps that line the wall of the small intestine
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villi
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How do nutrients gt to rest of body?
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through the blood
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Absorbs water, mineral and salts.
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large intestine
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Waste that leaves body is mostly?
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tough fibers from plant material that can't be digested
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Where does digestion begin?
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mouth
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What is the role of the pancreas in digesting food
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makes enzymes
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takes in and responds to information
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nervous system
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a cell that carries a message
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neuron
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Three parts of the brain
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brain stem
cerebellum cerebrum |
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controls breathing, heartbeat and blood pressure
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brain stem
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controls balance & movement
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cerebellum
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largest part of brain. thinking, imagination, memory, movement
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cerebrum
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five senses
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sight, hearing, smell taste touch
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3 parts of the nervous system
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brain
spinal cord peripheral nerves |
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thick bundle of nerves held inside the spine.
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spinal cord
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brain & spinal cord are the
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central nervous system
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part of the nervous system outside the central nervous system
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peripheral nervous system
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2 types of peripheral nerves
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sensory nerves
Motor nerves |
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carry messages away from body parts and organs and toward the cental nervous system
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sensory nerves
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type of perifpheral nerves that include nerves for 5 senses
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sensory nerves
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carry messages from the central nervous system toward muscles or other body parts throughout the body
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motor nerves
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type of message atht does not begin or end at brain
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reflex
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a movement that happens without the brain being involved
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reflex
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a white fatty material that helps neurons carry signals quickly
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myelin
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A nerve that moves a muscle is
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motor nerve
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