The human cardiovascular system
Grade 6 Science Worksheets
The heart and the circulatory system make up the human cardiovascular system. It is the transport system of the body that helps in circulating substances in blood. Blood delivers oxygen and nutrients to every cell and removes carbon dioxide and waste products made by those cells. This tubular system comprising of blood vessels is propelled by a pumping heart.
The human cardiovascular system comprises of two circuits – pulmonary and the systemic and they consist of arterial, capillary and venous components. Put your knowledge to the test with this challenging 6th Grade Science Worksheet! Read each question carefully and choose the response that you feel is correct.
Schedule a Free session to clear worksheet doubts
No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!
Pulmonary and systemic circuits
During breathing, the air we inhale reaches our lungs, which is then carried by blood vessels to the heart. The heart pumps it further to all the cells in various parts of the body. The carbon dioxide from the cells is then carried by another set of blood vessels to the heart that pumps it back to the lungs for exhalation. This can be divided into two circuits for easier study –Doubts? A 6th-grade science tutor can help.
A) The pulmonary circuit (between lungs and the heart)
The pulmonary (related to lungs) circuit is that part of the circulatory system that carries oxygen rich (or oxygenated) blood from the lungs to the heart and carbon dioxide rich (or deoxygenated) blood from the heart to the lungs.
B) The systemic circuit (between heart and the rest of the body)
It is that part of the circulatory system that carries oxygenated blood away from the heart, delivers to organs, tissues and cells and returns deoxygenated blood from the cells back to the heart.
eTutorWorld Understands Math Tutoring | Online Math Worksheets are Important Tools
Understanding graphs, charts, and opinion polls in a newspaper, for calculating house and car payments, and for choosing a long-distance telephone service are impossible without strong math skills …and the only way to develop strong math skills is by constant practice.
‘Practice makes a man perfect’ holds true for no other field better than for math. A middle or high school student must set aside a minimum of an hour for math every day. Other than textbooks, worksheets help you revise and understand concepts better.
Our expert tutors prepare online maths worksheets that are age and grade-appropriate. Grade-wise math worksheets for Elementary Math, Arithmetic, Pre-Algebra, Algebra, Geometry, Trigonometry, Statistics, Pre-Calculus and Calculus can be solved to improve math skills, to get ahead or to even catch up.
You may download these FREE online math worksheets in the PDF format, and then print and email us their solutions for a free evaluation and analysis by eTutorworld’smath expert tutors.
You may solve these worksheets by yourself or with your peers while studying together.
The Answer Key at the end of each worksheet allows for a self-evaluation.
Personalized Online Tutoring
eTutorWorld offers affordable one-on-one live tutoring over the web for Grades K-12, Test Prep help for Standardized tests like SCAT, CogAT, MAP, SSAT, SAT, ACT, ISEE and AP. You may schedule online tutoring lessons at your personal scheduled times, all with a Money-Back Guarantee. The first one-on-one online tutoring lesson is always FREE, no purchase obligation, no credit card required.
For answers/solutions to any question or to learn concepts, take a FREE CLASS.
No credit card required, no obligation to purchase.
Just book a free class to meet a tutor and get help on any topic you want!
The heart
Heart is a muscular organ that pumps blood through the network of arteries and veins. It usually beats 60-100 times in a minute. It has four chambers – two atria on top and two ventricles at the bottom.
Ventricles pump blood out of the heart. The two chambers are divided by a wall known as interventricular septum. Atria receive blood entering the heart. A wall called interatrial septum separates the two atria. The atria are separated from the ventricles by the valves known as tricuspid valve and mitral valve for the right and left side respectively.
Function of the chambers
- The right atrium receives blood from the veins and pumps it to the right ventricle.
- The right ventricle receives blood from the right atrium and pumps it to the lungs for oxygenation.
- The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle.
- The left ventricle which is the strongest chamber pumps this oxygen-rich blood to the rest of the body. Its vigorous contractions create our blood pressure.
Blood vessels
There are three main types of blood vessels –
Arteries, Capillaries and Veins.
Arteries –
Arteries are the blood vessels that carry blood away from the heart to all parts of the body (tissues, lungs, brain etc.). Most of the arteries carry oxygenated blood. The Aorta is the largest artery in the body that originates in the heart and distributes oxygenated blood to all the parts of the body. Arteries carry blood at higher pressure due to pumping of the heart. The thicker walls in arteries help them to withstand the pressure.
Exception: The Pulmonary Arteries carry deoxygenated blood from the heart to the lungs for removal from the body during exhalation.
Capillaries –
Capillaries are very thin blood vessels that form networks throughout the bodily tissues. They form the destination of the arterial blood from the heart and starting point for venous blood that goes back to the heart. They facilitate the exchange of oxygen, nutrients and wastes between the blood and the tissues.
Veins –
Veins are the blood vessels that carry blood towards the heart. Most veins carry deoxygenated blood from the cells back to the heart. The blood flows at lower pressure in the veins and its walls are thinner. Veins have valves present in them to stop the blood from flowing back as they mostly travel against gravity. Veins are present closer to the surface of the skin as compared to arteries that are deeper.
Exception: The Pulmonary Veins carry oxygenated blood from the lungs to the heart for further circulation in the body.
Blood and its components
Blood is the transport liquid, which is both a tissue and a fluid. There are four main components of blood – plasma, red blood cells, white blood cells and platelets.
Plasma is the liquid portion of the blood. It is yellowish in color and is mostly made up of water. It also contains proteins, glucose, hormones and minerals. It transports water and nutrients to body tissues. It also transports carbon dioxide from the cells for their removal.
Plasma has three types of cells suspended in it –
1) Red Blood Cells –
They form 45% of the blood volume. They contain an iron-containing protein called hemoglobin that helps in carrying oxygen. When hemoglobin is attached to oxygen it brightens in color and when oxygen is removed, it darkens in appearance. Arteries that carry oxygen thus, appear red. After oxygen is delivered in tissues, the blood enters the veins and thus veins appear darker.
2) White Blood Cells –
They account for just 1% of the blood but they are crucial for our existence. They ensure good health and protect us from diseases and ailments by attacking foreign bodies like viruses and bacteria.
3) Platelets –
The smallest of the blood cells, they control bleeding. When there is a wound, they form a cluster around the wound and plug it until it heals.
Check point
- Name the artery that carries carbon dioxide rich blood from the heart to the lungs.
- Name the protein in red blood cells that binds with oxygen and carries it.
- The three types of cells in blood are _____________.
- Name the valve between the right atrium and the right ventricle.
- Which blood cells help us fight against a viral disease like Covid-19?
- How does the excretory system work with the cardiovascular system?
Answer Key
- Pulmonary Artery
- Hemoglobin
- Red Blood Cells, White Blood Cells and Platelets
- Tricuspid valve
- White Blood Cells
- All of your body’s organs, including the kidneys, are supplied with oxygen-rich blood by the heart. The kidneys clean the blood by removing waste products and excess water.
Schedule a Free session to clear worksheet doubts
No credit card required, no obligation to purchase.
Just schedule a FREE Sessions to meet a tutor and get help on any topic you want!
Pricing for Online Tutoring
Tutoring Package | Validity | Grade (1-12), College |
---|---|---|
5 sessions | 1 Month | $139 |
1 session | 1 Month | $28 |
10 sessions | 3 months | $269 |
15 sessions | 3 months | $399 |
20 sessions | 4 months | $499 |
50 sessions | 6 months | $1189 |
100 sessions | 12 months | $2249 |
6th Grade Free Worksheets
- Inquiry process
- Nature of Science
- Scientific Inquiry
- Inquiry, Analysis and Problem Solving
- Ethical Practices
- Science and Society
- Biotic and Abiotic Factors
- Impact of Organisms
- Adaptation
- Spheres of Earth
- Natural Resources
- Environmental Issues
- Conservation of Earth
- Understanding Technology
- Abilities To Do Technological Design
- Structure of Earth
- Solar System
- Rocks and Fossils
- Earth Systems
- Plate Tectonics
- Evolution
- Magnetic Field of Earth
- Geologic Time
- Materials and Processes That Shape a Planet
- Astronomy
- Ecology
- Energy
- Kinetic and Potential Energy
- Energy Transfer
- Matter and its Structure
- States of Matter
- Physical and Chemical Changes
- Force and Motion
- Electricity and Magnetism
- Wave Interactions
- Sound
- Light
- Introduction to Life Science
- The Origin & History of Life On Earth
- Plant and Animal Cells
- Parts of a Cell
- The Cell Cycle
- How Living Organisms Get Energy
- Classification of Organisms
- How Plants Grow & Reproduce
- The Human Respiratory System
- The Human Cardiovascular System
- The Human Digestive System
- The Human Endocrine Systems
- The Human Nervous System
- The Human Muscular System
- The Human Skeletal System
Images Credit:
https://www.newhealthadvisor.org/Double-Circulatory-System.html
https://www.fairview.org/patient-education/89100
https://biology-forums.com/index.php?action=gallery;sa=view;id=26243
https://curehht.org/understanding-hht/what-is-hht/medical-summary/
https://www.stanfordchildrens.org/en/topic/default?id=what-are-red-blood-cells-160-34
IN THE NEWS
Our mission is to provide high quality online tutoring services, using state of the art Internet technology, to school students worldwide.
Online test prep and practice
SCAT
SSAT
ISEE
PSAT
SAT
ACT
AP Exam
Science Tutoring
Physics Tutoring
Chemistry Tutoring
Biology Tutoring
Math Tutoring
Pre-Algebra Tutoring
Algebra Tutoring
Pre Calculus Tutoring
Calculus Tutoring
Geometry Tutoring
Trigonometry Tutoring
Statistics Tutoring
Quick links
Free Worksheets
Fact sheet
Sales Partner Opportunities
Parents
Passive Fundraising
Virtual Fundraising
Our Expert Tutors
Safe and Secure Tutoring
Interactive Online Tutoring
After School Tutoring
Elementary School Tutoring
Middle School Tutoring
High School Tutoring
Home Work Help
Math Tutors New York City
Press
©2022 eTutorWorld Terms of use Privacy Policy Site by Little Red Bird
©2022 eTutorWorld
Terms of use
Privacy Policy
Site by Little Red Bird