The Human Heart. Diagram of the Heart Chambers of the heart The heart has four chambers or parts. These are called: The heart has four chambers or parts.

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Presentation transcript:

The Human Heart

Diagram of the Heart

Chambers of the heart The heart has four chambers or parts. These are called: The heart has four chambers or parts. These are called: Right atrium Right ventricle Left atrium Left ventricle

Blood Vessels Veins are tubes which bring blood without oxygen into the heart. Veins are tubes which bring blood without oxygen into the heart. Arteries are tubes which take blood with oxygen away from the heart and bring it all around the body. Arteries are tubes which take blood with oxygen away from the heart and bring it all around the body. Together they are called blood vessels. Together they are called blood vessels.

How the Heart Works 1. Blood without oxygen comes into the heart through a vein. 2. It goes into the first chamber called the right atrium. 3. It then goes through an opening called a valve into the right ventricle. 4. From there it is pumped to the lungs to collect some oxygen.

Going into the Heart Blood without oxygen Off to the lungs we go! 1 2 3

How the Heart Works 1. Blood with oxygen comes back to the heart from the lungs. 2. It goes into the left atrium. 3. It then goes through an opening called a valve into the left ventricle. 4. From there it is pumped away from the heart and all around the body through a very special artery called the aorta.

Coming out of the Heart Back from the lungs

A Video on the Heart heart-anatomy.aspx heart-anatomy.aspx

Experiment Time!

Finding our Pulse! Put your left hand out. Put your left hand out. Put out your middle and pointing finger on the right hand. Put out your middle and pointing finger on the right hand. Place them on your left wrist below your thumb and search for a beat. This is your pulse. Place them on your left wrist below your thumb and search for a beat. This is your pulse. The pulse tells us how quickly the heart is pumping blood around the body. The pulse tells us how quickly the heart is pumping blood around the body. It should beat about 70 times every minute. It should beat about 70 times every minute.

Finding our Pulse! COUNT HOW MANY TIMES YOU FEEL YOUR PULSE BEAT IN ONE MINUTE. COUNT HOW MANY TIMES YOU FEEL YOUR PULSE BEAT IN ONE MINUTE. Record your answer. Record your answer. My pulse is _____ per minute.

Finding our Pulse! Jog on the spot for one minute. Jog on the spot for one minute. Now count how many times you feel your pulse beat in one minute. Now count how many times you feel your pulse beat in one minute. Record your answer. Record your answer. When I ran for 1 minute my pulse was _____ per minute. What happened to your pulse when you ran for one minute? Why do you think this happened?

Finding our Pulse! Do jumping jacks for one minute. Do jumping jacks for one minute. Now count how many times you feel your pulse beat in one minute. Now count how many times you feel your pulse beat in one minute. Record your answer. Record your answer. When I did jumping jacks for 1 minute my pulse was_______________ per minute. What happened to your pulse when you did jumping jacks for one minute? Why do you think this happened?