Heart, Veins, Arteries, Blood

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Presentation transcript:

Heart, Veins, Arteries, Blood Mind Stretcher – 1/25/18 Name the structures/organs of the circulatory system. 2. What is the main function/job of the circulatory system? Heart, Veins, Arteries, Blood Blood delivers oxygen and nutrients to the cells and removes carbon dioxide

AKA: Cardiovascular System Circulatory System AKA: Cardiovascular System

Schoolhouse Rock: Circulation https://youtu.be/5tTkxYeNF9Q

Did you know? OXYGENATED- shown in RED color in diagrams Your heart is really a muscle located a little to the left of your chest and is about the size of a fist. The heart is like a pump moving the blood to deliver oxygen and nutrients to cells and also carries away waste. The left side of the heart receives OXYGENATED blood from the lungs and pumps it out to the body. The right side of your heart receives DEOXYGENATED blood from the body and pumps it back to the lungs to pick up more oxygen. OXYGENATED- shown in RED color in diagrams DEOXYGENATED- shown in BLUE color in diagrams

Which blood color in the diagram has oxygen in it and is being carried towards your cells? RED Which blood color in the diagram has been depleted of oxygen (used up) and is being carried towards your lungs to get more? BLUE

It's great to circulate! You probably guessed that the blood just doesn't slosh around your body once it leaves the heart. It moves through many tubes called arteries and veins, which together are called blood vessels. These blood vessels are attached to the heart. The blood vessels that carry blood AWAY from the heart are called Arteries. The ones that carry blood TO the heart are called Veins. The movement of blood through the heart and around the body is called circulation, and your heart is really good at it — it takes less than 60 seconds to pump blood to every cell in your body.

Interesting Facts: The body of an adult contains over 60,000 miles of blood vessels! An adult's heart pumps nearly 2000 gallons of blood each day! Your heart beats around 30 million times a year! The average three-year-old has two pints of blood in their body; the average adult at least five times more! A "heartbeat" is really the sound of the valves in the heart closing as they push blood through its chambers.

Can you work as fast as your heart? Did you know that in just one day, the heart pumps 1,900 gallons of blood through our body? That’s 1.3 gallons per minute! AMAZING! With each heartbeat, the heart is pumping 2.4 ounces of blood, or about 1/4 cup of water. You’re going to see if you can work as hard and as fast as your heart does each day by scooping ¼ cup water (this represents one heartbeat) into a bucket as fast as you can…You only have 1 minute! No spilling! Any Volunteers?

How hard does our heart work? Squeeze the tennis ball in one hand as many times as you think the heart muscle squeezes for 15 seconds. Record the # of squeezes on the side of your notes. Now squeeze one “beat” each time the teacher counts (1 full min.) That pace represents someone at REST…but no one stays that still when awake. Squeeze each time teacher says “beat” (80/min)

How does the heart pump blood? https://youtu.be/ruM4Xxhx32U

What is our blood made of? https://youtu.be/l44oNfxmIns?t=15s

What do the components of blood do? Blood is made up of 4 different components: Plasma - Fluid part of the blood, consists mostly of water, carries substances such as fats and proteins. carries food & secretions to the cells & carbon dioxide from the cells. Red Blood Cells (RBC’s) - cells that carry oxygen from the lungs to the body cells and transport carbon dioxide from the cells back to the lungs White Blood Cells (WBS’s) -destroy bacteria in the blood and fights infection. Platelets - help blood to clot and maintain normal body temperature

Let’s take a closer look! Observe the model of blood…what do you think each of these items represents? Blood is made up of 4 different components: Water Red squishy beads Grey foam White ping pong balls Water – 50% Red blood cells – 44% Plasma – 5% White blood cells – 1% Time for some simple math…

Blood Cell Basics- Math Worksheet Take a few minutes to complete the pie chart modeling what’s inside your blood. Then do some calculations & finish it up. (10 min. max)

STOP HERE

Background Info Read the background information printed on your lab sheet silently (or as a class)

Heart Rate Lab I will time the whole class to complete each exercise for 1 full minute You need to be QUIET during this time! After the 1 minute…you will quickly find your pulse. Start counting the beats when I say “count” and stop when I say “stop.” Record this info on your lab sheet

Question… In addition to your heart beating faster as you exercise…. WHY does your breathing rate increase too?

Use COMPLETE sentences and # your answers Use COMPLETE sentences and # your answers. What is the effect of exercise on heart rate? What was your resting pulse per minute? 2. What happened to your heart rate as you increased the intensity of exercise? Give an example using your personal data. Why does this happen? 3. COPY & FILL IN: The CELL PROCESS called, _______, needs oxygen to break down _________ in order to create _______and give off _water_ & ________ as waste products. 4. Describe HOW the respiratory, digestive & circulatory systems work together to get what the cells need.

What's lungs got to do with it? In the lungs, carbon dioxide is removed from the blood and sent out of the body when we exhale. When you inhale, and a fresh breath of oxygen enters the blood to start the process again. This delivery to all your cells happens in about 1 minute! Without help from the CIRCULATORY system… the oxygen you inhale would never make it to your cells!

Mind Stretcher – Put the following images in order from smallest to largest. Label the level of organization as well! A B D C

ANSWER: B- cell, C-tissue, D- organ, A- system

Helpful Websites to Explore... http://kids.discovery.com/tell-me/science/body- systems/your-cardiovascular-system http://www.findingdulcinea.com/guides/Scienc e/The-Circulatory-System.pg_00.html

Did you know? Your heart is really a muscle located a little to the left of your chest and is about the _____________. The heart is like a pump moving the blood to deliver ____________and _____________ to cells and also _____________________________. The ____________ of the heart receives _______________________ from the lungs and pumps it out to the body. (It is shown in _____ color in diagrams!) The _____________ of the heart receives _________________________ from the body and pumps it back to the lungs to pick up more oxygen. (It is shown in _____ color in diagrams!)

It's great to circulate! You probably guessed that the blood just doesn't slosh around your body once it leaves the heart. It moves through many tubes called _________ and _______which together are called __________. These blood vessels are attached to the heart. The _________ that carry _______________________are called ______. The ones that carry blood___________ are called _____________. The _______________________through the heart and around the body is called ______________, and your heart is really good at it — it takes less than ____________ to pump blood to every cell in your body.

Cells break down GLUCOSE in order to make ATP Energy! Mind Stretcher – ?? Describe Cellular Respiration. 2. What are the reactants (taken in) and products (what’s created)? Cells break down GLUCOSE in order to make ATP Energy! Reactants: OXYGEN & GLUCOSE Products: ATP Energy, Carbon Dioxide, & Water