GA33BIO14 - Human Cardiovascular System, The Structure And Function of The Heart or Blood Vessels - Biology Assignment Help

Assignment Task -

Task
1-Identify the main structures and blood vessels of the human heart and explain their roles in maintaining circulation.
2-Discuss the structure of arteries, veins, and capillaries in relation to their functions.
3-Explain the importance of a double circulation for humans.
4-Identify the conductive tissues in the heart and explain the roles of these in the cardiac cycle.
5-Explain the difference between systolic and diastolic blood pressure and identify normal ranges.
6-Explain the control of heart rate and stroke volume in response to changes in blood gases and blood pressure.

Task

a)Use arrows on the diagram above to indicate the nature of blood present and the direction of blood flow in each side of the heart.

The right side of the heart
Firstly, Blood enters the heart through the inferior and superior vena cava -which are two large veins- carrying deoxygenated blood from the body into the right atrium. The contract of the atrium makes blood flows from the right atrium into the right ventricle through the tricuspid valve. the tricuspid valve shuts when the ventricle is full which in return prevents blood from going back into the atria while the ventricle contracts. Blood leaves the heart through the pulmonic valve as the ventricle contracts, passing blood into the pulmonary artery and then to the lungs where it is oxygenated. However, the CO2 containing blood goes through the pulmonary artery to the lungs where CO2 is exchanged for O2. 

The pulmonary vein function is to empty oxygenated blood from the lungs into the left atrium. when the atrium contracts, it forces blood to flow from the left atrium into left ventricle through the mitral valve. At the time the ventricle gets full, the mitral valve shuts to prevent blood from flowing backward into the atrium while the ventricle contracts. when the ventricle contracts, oxygenated blood leaves the heart through the aortic valve, into the aorta and arteries, and finally into veins to complete the blood circulation. (How the Heart Works: Diagram, Anatomy, Blood Flow, 2021)

b)Label the structures identified by the arrows above.
1. Superior vena cava 2.
Right atrium

3. Pulmonary valve
4. Right ventricle 
5. Left ventricle 
6. Mitral Valve 
7. Pulmonary veins 
8.  Pulmonary artery 
9. Aorta. 
c)Produce a table that identifies the functions of these structures in maintaining effective circulation. Provide more detail for the structures above marked with a star.

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