Respiratory and Circulatory Systems (Ana Galarza)

Title: How Do You Rate Your Respiratory and Circulatory System

Principle(s) Investigated: How body systems work together to provide the body with the energy it needs.

Standards :

• 2.b know how blood circulates through the heart chambers, lungs, and body

and how carbon dioxide (CO2) and oxygen (O2) are exchanged in the lungs and

tissues.

• 6.c Plan and conduct a simple investigation based on a student-developed question

and write instructions others can follow to carry out the procedure.

• 6.d. Identify the dependent and controlled variables in an investigation.

Materials:

• stopwatch or timer
• chair
• data table

Timer

QUICKWRITE

Procedure:

1. Collaborate Work in a group. Have one group member be the timekeeper. Record your findings on the data table.
2. Measure Have a group member take your pulse while you sit at rest. The group member will count beats for 15 seconds. You count the number of breaths you take during the same time.
3. Record Data Record your pulse and breathing rate. Repeat steps 2 and 3 with each group member.
4. Measure Jump in place for 1 minute. Immediately have a group member take your pulse for 15 seconds. During the same time count your breaths. Record your new pulse and breathing rate. Repeat this step for each group member.
5. Using Numbers FInd your pulse and breathing rate for one minute. Use this formula

Number in X 4 = Number in

15 seconds 1 minute

Student prior knowledge: Students should have knowledge on what is the respiratory system and the circulatory system.

Explanation: The respiratory system brings oxygen into the body and delivers it to the circulatory system. oxygen in the blood is delivered to each of the body's cells. Then the blood takes carbon dioxide from each cell and takes it back to the lungs where it is removed from the body. This experiment demonstrates how the circulatory and respiratory systems work together. After the students have performed the experiment they should have noticed that their pulse and breathing rate increases immediately after exercise. Breathing rates will increase because the heart pumps faster to deliver more oxygen to the cells in the muscles. This exercise increases lung capacity , cardiac output, and the ability of muscle cells to get oxygen from the blood.

.

Questions & Answers:

1.How did your pulse and breathing rates change with exercise? The pulse rate and breathing rate should increase with exercise because the muscles need more oxygen as they are exercised. Plus rate also increases because the heart pumps faster to deliver more oxygen cells in the muscles.

2. Why do breathing rates increase with exercise? This exercise increases lung capacity, cardiac output, and the ability of muscle cells to get oxygen from the blood.

3. Suppose you continued to jump in place for an additional three minutes. Would your breathing rate continue to increase? Your breathing rate will increase to a point, and then it should level off.

Applications to Everyday Life: The Circulatory System helps your body needing cells. Also nutrients and oxygen removes waste from your body. As blood is pumped out of the heart it travels through arteries capillaries and then veins. What system works with the circulatory system? All the systems work together to make you live. If one fails they will all fail. The Respiratory System is the biological system of an organism that introduces respiratory gases to the interior and performs gas exchange. In humans and other mammals, the anatomical features of the respiratory system include airways, lungs, and the respiratory muscles. Molecules of oxygen and carbon dioxide are passively exchanged, by diffusion, between the gaseous external environment and the blood. This exchange process occurs in the alveolar region of the lungs.^[1] Other animals, such as insects, have respiratory systems with very simple anatomical features, and in amphibians even the skin plays a vital role in gas exchange. Plants also have respiratory systems but the directionality of gas exchange can be opposite to that in animals. The respiratory system in plants also includes anatomical features such as holes on the undersides of leaves known as stomata.

Photographs:

Videos: http://www.youtube.com/watch?v=HiT621PrrO0

http://www.youtube.com/watch?v=LqhvmUEdOYY

http://www.youtube.com/watch?v=_fSaKZe3TPg&feature=related

Websites: http://en.wikipedia.org/wiki/Respiratory_system