Nervous and Digestive Systems

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Information about Nervous and Digestive Systems

Published on January 28, 2008

Author: stviator4b

Source: slideshare.net

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Nervous and Digestive Systems

The Nervous and Digestive Systems

The Nervous System your nervous system controls all parts of your body receives and sends messages brain is the control center of your nervous system neurons: nerve cells brain and all other parts of nervous system made of neurons Click on brain for website

your nervous system controls all parts of your body

receives and sends messages

brain is the control center of your nervous system

neurons: nerve cells

brain and all other parts of nervous system made of neurons

brain gets a lot of info from sense organs in your head eyes, ears, tongue, and nose brain gets info from other parts of your body your body has nerves, that pass along info nerves: groups of neurons sense organs in your head have nerves that connect directly to your brain spinal cord connects the nerves in the rest of your body to your brain spinal cord : a tube of nerves that runs through your spine backbone

brain gets a lot of info from sense organs in your head

eyes, ears, tongue, and nose

brain gets info from other parts of your body

your body has nerves, that pass along info

nerves: groups of neurons

sense organs in your head have nerves that connect directly to your brain

spinal cord connects the nerves in the rest of your body to your brain

spinal cord : a tube of nerves that runs through your spine

backbone

info from your body goes up your spinal cord to your brain brain acts on info and sends a message back playing a baseball game - at bat, your eyes watch the ball; eyes send info to the brain about speed and direction of the ball; in less than a second your brain decides whether or not to swing if you decide to swing, your brain will send information down your spinal cord to nerves in your arms; the message will tell your arm muscles when and how hard to swing if you hit the ball your brain will tell your leg muscles to run the more you practice, the better your brain will get at telling your muscles how to hit the ball

info from your body goes up your spinal cord to your brain

brain acts on info and sends a message back

playing a baseball game - at bat, your eyes watch the ball; eyes send info to the brain about speed and direction of the ball; in less than a second your brain decides whether or not to swing

if you decide to swing, your brain will send information down your spinal cord to nerves in your arms; the message will tell your arm muscles when and how hard to swing

if you hit the ball your brain will tell your leg muscles to run

the more you practice, the better your brain will get at telling your muscles how to hit the ball

The Digestive System provides nutrients for the whole body breaks down, digestes, the food you eat into nutrients your body’s cells can use begins in your mouth teeth grind up food into smaller pieces salvia softens food and begins to digest it

provides nutrients for the whole body

breaks down, digestes, the food you eat into nutrients your body’s cells can use

begins in your mouth

teeth grind up food into smaller pieces

salvia softens food and begins to digest it

after swallowing, food enters esophagus esophagus: a tube that connects your mouth with your stomach actions of smooth muscles in your esophagus move the food to your stomach stomach is a bag made of smooth muscles muscles squeeze food and mix it with digestive juices juices digest some parts of the food food is mixed and squeezed until it becomes mostly liquid

after swallowing, food enters esophagus

esophagus: a tube that connects your mouth with your stomach

actions of smooth muscles in your esophagus move the food to your stomach

stomach is a bag made of smooth muscles

muscles squeeze food and mix it with digestive juices

juices digest some parts of the food

food is mixed and squeezed

until it becomes mostly liquid

the liquid food then passes into the small intestine, a long tube of muscle different digestive juices are added and other parts of food are digested small intestine does more than any other part of the digestive system the nutrients from digested food pass through the walls of the small intestine into capillaries blood carries nutrients to body’s cells

the liquid food then passes into the small intestine, a long tube of muscle

different digestive juices are added and other parts of food are digested

small intestine does more than any other part of the digestive system

the nutrients from digested food pass through the walls of the small intestine into capillaries

blood carries nutrients to body’s cells

large intestine is the last part of digestive system most food that reaches the large intestine can’t be broken down any more large intestine removes water from this food what is left travels through the large intestine until it passes out of the body

large intestine is the last part of digestive system

most food that reaches the large intestine can’t be broken down any more

large intestine removes water from this food

what is left travels through the large intestine until it passes out of the body

Summary brain sends messages to and from all parts of the body through the spinal cord and nerves controls the way all other body systems work the digestive system breaks down food to provide nutrients for all body’s cells blood carries nutrients to every cell in body

brain sends messages to and from all parts of the body through the spinal cord and nerves

controls the way all other body systems work

the digestive system breaks down food to provide nutrients for all body’s cells

blood carries nutrients to every cell in body

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