Cardiovascular System Flashcards
What does the Cardiovascular system do and what are the waste products?
It transports blood around the body and helps regulate the internal body temperature. Waste products: CO2+water = carbonic acid
What does the Pulmonary system do?
Transfers blood between heart and lungs. (oxygenated/deoxygenated)
What does the Systemic System do?
Transfers oxygenated blood to the body, and returns deoxygenated blood to heart, before it becomes part of the pulmonary system.
Name 4 parts of blood
Plasma Red Blood Cells White Blood Cells Platelets
What is plasma and what does it do?
Plasma is the salty fluid part of the blood. It carries CO2, hormones and waste products. It helps maintain acidity levels in blood
What do the red blood cells do and where are they created?
They are created in the bone marrow, and they carry and transport haemoglobin.
Average lifespan of haemoglobin
108 days
What do the white blood cells due and what is it a part of?
It is a part of the immune system and it produces antibodies, which fight of infections and micro organisms.
Which is larger: White or Red Blood Cells?
White blood cells
What do platelets do?
They form blood clots to stop bleeding
What do arteries do? high/low pressure?
They carry oxygenated blood from the heart to the body and work under high pressures.
What do veins do? High/low pressure? Thick/Thin walls?
They carry deoxygenated blood from body to the heart and work under weaker pressures. They have thinner walls and contain valves to stop backflow.
What do capillaries do and how thick are they? High/Low pressure?
They are one cell thick and exist for a gas diffusion (O2/CO2). They work under weak pressures.
The heart is also known as the…
Aortic pump
Aorta
Takes oxygenated blood from the heart to the rest of the body
Vena Cava
Deoxygenated blood from body enters the heart via the vena cava
Pulmonary arteries
Carry deoxygenated blood from the heart to the lungs
Pulmonary veins
Carry oxygenated blood from the lungs to the heart.
Coronary arteries
Wrapped around heart to supply the heart with O2 and fuel (Carbs, glucose)
Coronary Veins
Carry waste products away from heart (CO2+water=carbonic acid)
which is the stronger pump (Atrium/Ventricle)?
The ventricle! It pumps blood away from the heart.
Explain the process of the heart.
Deoxygenated blood enters the heart from the body via the vena cava into the right atrium, then the right ventricle.
Deoxygenated blood is pumped from the right ventricle through the pulmonary arteries to the lungs and pumped back to the heart via the pulmonary veins.
It enters the left atrium, then the left ventricle and is then pumped back to the body via the Aorta.
What is Pulse Rate?
Number of contractions of the ventricles per minute (Beats per minute)
Pulse rate is controlled by which nervous system?
Autonomous Nervous System