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Organization in human body: The heart and circulatory system

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Objectives

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Introduction to Science

The circulatory system

The circulatory system is important because it's like the body's delivery system. Its main functions are:

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Main functions of the circulatory system

Transporting oxygen and nutrients

Removing waste

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Main functions of the circulatory system

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Main functions of the circulatory system

Keeping body temperature stable

Staying alive and healthy

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The hearth

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Circulatory system

Veins

Blood Vessels

Arteries

Blood

Capillaries

These are like highways that carry blood throughout the body.

These carry oxygenated blood away from the heart.

These bring deoxygenated blood back to the heart.

Tiny blood vessels where oxygen and nutrients pass into tissues and waste products move into the blood.

It's like the body's delivery truck, transporting important stuff. Red Blood Cells: They carry oxygen from the lungs to the body and carbon dioxide back to the lungs. White Blood Cells: They fight off germs and keep you healthy. Platelets: They help blood clot to stop bleeding when you get a cut. Plasma: This is the liquid part of the blood that carries nutrients, hormones, and waste products.

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How it Works?

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Fun facts!

-The heart beats about 100,000 times a day! -The circulatory system is about 60,000 miles long if you laid out all the blood vessels in a line—that's like circling the Earth two and a half times

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Listen to the text and look at the picture:

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The human body is a system of many organ systems that work together. For example, the circulatory system works closely with the respiratory system. One of the respiratory system´s functions is to bring oxygen from the air into the body. Match each evidence statement to the claim that it supports.

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Multiple tissues work together in organs such as the heart. Multiple organs work together in organ systems.The hearth is part of an organ system called the circulatory system, which also includes the blood and the blood vessels. The blood and the smallest blood vessels are tissues. Larger blood vessels are organs.

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When many similar specialized cells are organized together, they form a system called a tissue. The ells in a tissue work together to allow the tissue to perform its function. In the heart, cardiomyocytes form cardiac muscle tissue. The function of this tissue is to expand and contract, or beat, forcefully. Because cardiomycytes are connected, they can send signals to one another. Match each evidence statement to the claim that it supports.

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Welcome 6th graders!

A journey soon begin through Social Science experiences!

Let's practice

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A journey soon begin through Social Science experiences!

Great job!

See you next time

6TH-ORGANIZATIONINHUMANBODY:THEHEARTANDCIRCULATORYSYSTEM-EN © 2023 by CASURID is licensed under CC BY-NC-ND 4.0

- SC.6.L.14.1Describe and identify patterns in the hierarchical organization of organisms from atoms to molecules and cells to tissues to organs to organ systems to organisms.- SC.6.L.14.2Investigate and explain the components of the scientific theory of cells (cell theory): all organisms are composed of cells (single-celled or multi-cellular), all cells come from pre-existing cells, and cells are the basic unit of life.-SC.6.L.14.3Recognize and explore how cells of all organisms undergo similar processes to maintain homeostasis, including extracting energy from food, getting rid of waste, and reproducing.-SC.6.L.14.4Compare and contrast the structure and function of major organelles of plant and animal cells, including cell wall, cell membrane, nucleus, cytoplasm, chloroplasts, mitochondria, and vacuoles.-SC.6.L.14.5Identify and investigate the general functions of the major systems of the human body (digestive, respiratory, circulatory, reproductive, excretory, immune, nervous, and musculoskeletal) and describe ways these systems interact with each other to maintain homeostasis.-SC.6.L.14.6Compare and contrast types of infectious agents that may infect the human body, including viruses, bacteria, fungi, and parasite.

The Pump: Think of the heart as a powerful pump that keeps blood moving throughout your body. Chambers: The heart has four chambers: two atria (upper chambers) and two ventricles (lower chambers). Valves: Between each chamber, there are valves that act like doors, ensuring blood flows in the right direction and prevents backflow.