Forgrae. Forget&Grace Tsamwisi

Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Forgrae. Forget&Grace Tsamwisi, Education, Zvishavane.

Operating as usual

06/09/2015

science is dynamic. so as zimbabweans lets utilise our knowledge and use it in our country. bindura varsity must focus on science education only. also why why bindura varsity buy water. can yu just construct yr factory of purifying water

scholarship 12/06/2015

scholarship

Share













Pin























































































About.com
About Education
Biology
. . .
Human Anatomy & Biology
Anatomy
Heart


Cardiac Cycle






By Regina Bailey

Biology Expert











Share













Pin



















































































Ads
Heart
Heart Attack Prevention
Heart Valve Replacement
Biology
Heart Failure Symptoms
Blood Clot
Veins
Open Heart Surgeon





1 of 1
Cardiac Cycle













Cardiac Cycle.






Sign Up for our
Free Newsletters




About TodayLiving HealthyBiology






Sign up















Biology Categories
Human Anatomy & Biology
Cell Biology
Biology Dictionary
Genetics
Biology Games and Quizzes
Plant Biology
Zoology
Microbiology
Advanced Placement Biology
Biology Science Fair Projects
Biotechnology / Cloning
Homework Help / Lesson Plans
Ecology
Evolution
Jobs / Summer Programs
Biology Basics
Experiments/Lab
Biology Study Aids
Updated Articles and Resources




Cardiac Cycle

The cardiac cycle is the sequence of events that occurs when the heart beats. There are two phases of the cardiac cycle. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood to the arteries. One cardiac cycle is completed when the heart fills with blood and the blood is pumped out of the heart.


Ads


Online MBA Scholarships

www.unicaf.org/MBA/Scholarship

in Zimbabwe Accredited European MBA Apply &Find Out If You Are Eligible


Holiday Inn Washington-Georgetown

Booking.com

$121.37 Book now


IOSR Journals

iosrjournals.org

Submit An Article In IOSR Journals. Fast Publication Process. Visit Us!

•Heart
•Heart Attack Prevention
•Heart Valve Replacement
•Biology
•Heart Failure Symptoms

The events of the cardiac cycle described below trace the path of the blood as it enters the heart, is pumped to the lungs, travels back to the heart and is pumped out to the rest of the body. It is important to note that the events that occur in the first and second diastole phases actually happen at the same time. The same is also true for the events of the first and second systole phases.

Cardiac Cycle: 1st Diastole Phase

During the diastole phase, the atria and ventricles are relaxed and the atrioventricular valves are open. De-oxygenated blood from the superior and inferior vena cavae flows into the right atrium. The open atrioventricular valves allow blood to pass through to the ventricles. The SA node contracts triggering the atria to contract. The right atrium empties its contents into the right ventricle. The tricuspid valve prevents the blood from flowing back into the right atrium.

Cardiac Cycle: 1st Systole Phase

During the systole phase, the right ventricle receives impulses from the Purkinje fibers and contracts.


Ads


Free Journal Research

www.globethics.net/library

Search the global online library on ethics. Sign up for free.

The atrioventricular valves close and the semilunar valves open. The de-oxygenated blood is pumped into the pulmonary artery. The pulmonary valve prevents the blood from flowing back into the right ventricle.

The pulmonary artery carries the blood to the lungs. There the blood picks up oxygen and is returned to the left atrium of the heart by the pulmonary veins.

Cardiac Cycle: 2nd Diastole Phase

In the next diastole period, the semilunar valves close and the atrioventricular valves open. Blood from the pulmonary veins fills the left atrium. (Blood from the vena cava is also filling the right atrium.) The SA node contracts again triggering the atria to contract. The left atrium empties its contents into the left ventricle. The mitral valve prevents the oxygenated blood from flowing back into the left atrium.

Cardiac Cycle: 2nd Systole Phase

During the following systole phase, the atrioventricular valves close and the semilunar valves open. The left ventricle receives impulses from the Purkinje fibers and contracts. Oxygenated blood is pumped into the aorta. The aortic valve prevents the oxygenated blood from flowing back into the left ventricle.

The aorta branches out to provide oxygenated blood to all parts of the body. The oxygen depleted blood is returned to the heart via the vena cavae.

Cardiovascular System

The cardiac cycle is vital to proper cardiovascular system function. Comprised of the heart and the circulatory system, the cardiovascular system transports nutrients to and removes gaseous waste from the cells of the body. The heart and its cardiac cycle provide the "muscle" needed to pump blood throughout the body, while blood vessels act as pathways to transport blood to its destination. The driving force behind the cardiac cycle is cardiac conduction. Cardiac conduction is the electrical system that powers the cardiac cycle and the cardiovascular system. It is what causes the heart muscle to contract, sending nerve impulses that travel throughout the heart wall.

Photo Credit: Image Courtesy of MedValet

share on facebook pin to pinterest





1 of 1













Related Articles
•2 Phases of the Cardiac Cycle
•The Anatomy of Your Heart
•Discover the 4 Steps of Cardiac Conduction
•What Is the Function of the Heart's Atria?
•What Makes the Sound of Your Heartbeat?
•Your Quick Guide to the Human Heart



Our Expert Recommends
• 12 Facts About Blood
• Cardiovascular System
• Circulatory System
• Heart Anatomy
• Four Steps of Cardiac Conduction
• Heart Anatomy Quiz
• Artery
• Vein
• Capillary





Biology Essentials




3 Common Shapes of Bacteria
Bacteriology




7 Differences Between Mitosis and Meiosis





10 Facts About Cancer Cells
Cell Biology




12 Interesting Facts About Blood
Blood Cells




What's the Role of the Central Nervous System?
Nervous System




Education Slideshows




9 Tips to Improve Your College Essay Style
College Admissions




Can You Name the 10 Smallest Countries in the World?
Geography




10 Largest Sea Creatures
Marine Life




9 Common Dreams and What They Mean
Psychology




What Was Underwear Like in Medieval Times?
Medieval History




Readers Recommend
•What Is Incomplete Dominance in Genetics?
•All About Animal Cells
•Discover What Occurs During Anaphase II of Meiosis
•What's the Role of the Central Nervous System?
•What Is the Cell Theory?








Next Slideshow





12 Interesting Facts About Blood





By Regina Bailey

About Expert





Today's Top 5 Picks In Education

5


5 Surprising Ways That Stress Affects Your Brain

By Kendra Cherry
Psychology Expert


4


55 Fun Summer Activities for Families

By Kris Bales
Homeschooling Expert


3


The 20 Smallest Dinosaurs and Prehistoric Animals

By Bob Strauss
Dinosaurs Expert


2


How to Ace Your Grad School Interview

By Deb Peterson
Continuing Education Expert


1


Why Is Water's Temperature Always Cooler Than the Air?

By Tiffany Means
Weather Expert


View More in Education











Education Videos




"Can I Take a Picture Here?" in French





"Is There a Cover Charge?" in French





How to Say "I'm a Student" in French


View More










Ads
Heart
Heart Attack Prevention
Heart Valve Replacement
Biology
Heart Failure Symptoms
Blood Clot
Veins
Open Heart Surgeon











About.com
About Education
Biology
Human Anatomy & Biology
Anatomy
Heart
Cardiac Cycle






About Education Follow us:




We deliver. Get the best of
About Education in your inbox.


Sign up









You can opt-out at any time. Please refer to our privacy policy for contact information.





Our Story
Advertise With Us
Site Map
Help

Write for About
Careers at About
Terms of Use & Policies




© 2015 About.com — All rights reserved.

scholarship

02/06/2015

i failed to draw diagram i will try my best next time

02/06/2015

Mr Tsamwisi
photosynthesis.

1. Chlorophyll is necessary for photosynthesis

Process
Take a potted plant with variegated (green and white) leaves.
Destarch the plant by keeping it in complete darkness for about 48 hours.
Expose the plant to the sunlight for a few days.
Test one of the leaves for starch with iodine solution.
Observations
- Areas with previously green patches test positive (turn blue black).
- Areas with previously pale yellow patches test negative (remain brown).
Conclusion
- Photosynthesis takes place only in green patches because of the presence of chlorophyll.
- The pale yellow patches do not perform photosynthesis because of the absence of chlorophyll.
2. Light is essential for photosynthesis
Process
Take a potted plant.
Destarch the plant by keeping it in complete darkness for about 48 hours.
Test one of it leaves for starch, to check that is does not contain any.
Fix a leaf of this plant in between two strips of a thick paper on leaf.
Place the plant in light for a few days.
Remove the cover from the leaf and test it for starch.
Observations
Positive starch test will be obtained only in the portion of the leaf exposed to light and negative test in parts with paper strip.
Conclusion
Light is necessary for photosynthesis.
3. Carbon dioxide is essential for photosynthesis
Process
Take two destarched potted plants.
Cover both the plants with bell jars and label them as A and B.
Inside Set-up A, keep NaHCO3 (sodium bicarbonate). It produces CO2.
Inside Set-up B, keep NaOH (Sodium hydroxide). It absorbs CO2.
Keep both the set-ups in the sunlight at least for 6 hours.
Perform the starch test on both of the plants.
Observations
Leaf from the plant in which NaHCO3 has been placed gives positive test.
Leaf from the plant in which NaOH has been kept give negatif test.
Conclusion
Plant in Set up A gets CO2 whereas plant in Set-up B does not get CO2.
It means CO2 is must for photosynthesis.
Powered by Tsamwisi

02/06/2015

Photosynthesis investigations – chlorophyll, CO2, light tests
Investigations to see if chlorophyll, light and CO2 are needed for photosynthesis.

1. Chlorophyll is necessary for photosynthesis

Process
Take a potted plant with variegated (green and white) leaves.
Destarch the plant by keeping it in complete darkness for about 48 hours.
Expose the plant to the sunlight

30/05/2015

Pakasikwa nyika pakaiswa vanhu vairi Adam naEve.Vakaita vana Cain and Abel.Cain killed Abel handi
Cain akazoitawo mkadzi wake.Mubvunzo ndewekuti mukadzi uyu akabvepi aimbovepi

29/05/2015

ukanzwa kuti TSAMWISI ALSO WATONZWA KTI SCIENCE

29/05/2015

contact me just drop mubvunzo wako then tobva tatokupa mhinduro faster faster

29/05/2015

CHEMISTRY DZEMUNHARAUNDA
1.cation exchange is the absorption of cations from the concurrent release of an equivalent number of other cation into the soil.
2.cation exchange capacity is the number of exchangeable cation per day weight that a soil is capable of holding the given capacity.
3.humus is the decomposing of organic materials in the soil.
4. importance of humus it improves the soil structure and controls the soil pH
5. quenching is when the excited species being deactivated by the collossion with other gases or particles
XY +M=xy +M+ kinetic energy
6.intermolecular transfer that is excited species transfer energy to other particles by colliding with other molecules and become excited
xy*+ab=xy+ab*

Photos from Forgrae. Forget&Grace Tsamwisi's post 29/05/2015

MR TSAMWISI SCIENCE TUTOR

Photos from Forgrae. Forget&Grace Tsamwisi's post 29/05/2015

Photos from Forgrae. Forget&Grace Tsamwisi's post

Photos from Forgrae. Forget&Grace Tsamwisi's post 29/05/2015

Photos from Forgrae. Forget&Grace Tsamwisi's post

encrypted-tbn3.gstatic.com 29/05/2015

encrypted-tbn3.gstatic.com

MR TSAMWISI

encrypted-tbn3.gstatic.com

t0.gstatic.com 29/05/2015

t0.gstatic.com

MR TSAMWISI
XEROPHYTES PLANT

t0.gstatic.com

29/05/2015

Xerophytes are the plants that living in areas where water is in short supply. eg mhototi area, chomukamba area, chizumba area
halophytes plant living in salt areas
mesophytes plants living where water is readily available eg britain

humanheart.weebly.com 29/05/2015

humanheart.weebly.com

FORGRAE CLINIC AND SOLUTION OFSCIENCE EDUCATION

THE HUMAN HEART

humanheart.weebly.com

encrypted-tbn2.gstatic.com 29/05/2015

encrypted-tbn2.gstatic.com

encrypted-tbn2.gstatic.com

encrypted-tbn1.gstatic.com 29/05/2015

encrypted-tbn1.gstatic.com

Mr TSAMWISI

encrypted-tbn1.gstatic.com

29/05/2015

THE HEART
The heart is a muscular pump of the blood around the body, found between the breastbone and the ribs . it is a cardic muscle and it works invoulantry. the heart has four chambers,the atria are the upper chamber whicn receives the blood and the ventricles are the lower chambers which inject the blood into arteries. the heart has four valves which separate this chambers. triscupid valve separate the right atrium from right vetricles, pulmonary valve separate the right ventricles from the pulmonary artery. biscupid valve separate the left atrium from left ventricles. and the aorta valve separate the right vetricles from the aorta valve. the septum divides the heart into two. the left side of the heart receives the oxygenated bloob and the right side receives the deoxygenated blood

Category

Telephone

Address


Zvishavane

Other Education in Zvishavane (show all)
Learn  Mande/Mandingue Learn Mande/Mandingue
Zvishavane, 112

An Open Forum for the learning and understanding of the Mande/ Mandingue and Malinke languages of West Africa.This group is purely voluntary and gratis