Bonus Questions Flashcards
Why are the walls of the left ventricle thicker than the walls of the right?
The left ventricle is used to pump out the blood meaning its used more for intensive purposes whereas the right brings in the blood.
Pulmonary circulation carries blood between the heart and the lungs. Systemic circulation carries blood to the rest of the body. In what chambers of the heart does pulmonary circulation begin and end? In what chambers does systemic circulation begin and end?
The right ventricle is where the pulmonary circulation begins and the left ventricle is where it ends as the blood is pumped out. Systemic circulation will always enter in the atriums and then will be pumped out by the ventricles.
Compare the thickness of the wall of the superior and inferior vena cava and the aorta? Which is thicker and why?
The superior and inferior vena cava is less thicker than the aorta because it only carries in deoxygenated blood meaning it has a low blood pressure whereas the aorta is where it pushes out blood so it has to have a thicker lining so as not to rupture.
Our body’s major organ systems are intimately connected and work as an overall unit. What are some of the ways that human body systems are interdependent?
Some ways the human body systems are dependent on each other are the respiratory system and circulatory system as they rely on each other to oxygenate and circulate blood around the body.
From cells to major organ systems, the architecture of the body and the functions the body can perform are very closely related. Can you identify body cells, tissues, organs, systems that demonstrate this relationship and discuss its significance?
The respiratory system and the circulatory system work together to fill body cells, such as tissue and organs with oxygenated blood.
As arteries carry blood away from the heart, they branch and become thinner and thinner until they become microscopic capillaries. These capillaries then join together and thicken as they become the veins that carry the blood back to the heart. The arteries have smooth walls, but the veins have valves that stop the blood from moving backwards. Why do veins need valves, when arteries don’t? What has that to do with capillaries?
Veins need valves because it makes sure the blood flows towards the heart, whereas arteries don’t need valves because the pressure from the heart keeps the blood flowing through them in one direction. Capillaries connect the veins and arteries to allow the exchange of oxygen between tissue cells and blood.
What are some facts about the Bicuspid and tricuspid valves and what’s special about the Aorta?
o The bicuspid valve is also known as the mitral valve.
o One-way flow of blood from the right ventricle is ensured by the presence of the tricuspid valve.
o Mitral valve prolapse, which is abnormal, may allow blood to enter the left atrium.
o The aorta is the largest artery of the human body.
What are some facts about the heart?
o The septum is a muscular wall between the left and right ventricles.
o The cardiac muscle is the name of the sac that surrounds the heart
o The bulk of the heart rests on the left side of the body.
o The following chambers of the heart function to receive blood from the veins: is it goes into the right side by the right atrium and is then pumped out by the right ventricle and then it goes into the lungs for oxygen and then its goes into the left atrium and is pumped out by the left ventricle and is spread throughout the body.
