WHat does the circulatory system consist of
Heart
Blood vessels
Arteries- “a” for away from heart
veins-deoxiginated blood to the heart
capillaries-delicate blood vessels that deliver nutrients and oxygen to cells throughout your body
Blood
Red blood cells- trasports oxygen and dioxiginated blood
White blood cells- immune system to fight
Platelets-Stop bleeding by forming blood clots
WHat is the function of the human circulatory system?
is to transport blood around the body
What are blood vessles
are intricate networks of hollow tubes that trasport blood throughout the entire body.
What is another name for the circulatory system
cardiovascular system
“cardio” meaning heart
“vascular” meaning blood vessles
Heart Definition
a hollow muscular organ that pumps the blood through the circulatory system by rhythmic contraction and dilation.
Cardiovascular system Definition
the body’s network of the heart, blood vessels (arteries, veins, and capillaries), and blood that transports oxygen and nutrients to tissues and removes waste products like carbon dioxide.laptic acid uric acid
Blood vessels Definition
a network of tubes that form the circulatory system, carrying blood to and from all parts of the body
Arteries- Definition
any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body.
Vein Definition
any of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood towards the heart.
Platelets
a small colourless disc-shaped cell fragment without a nucleus, found in large numbers in blood and involved in clotting.
Red blood cells-
a type of blood cell that are responsible for carrying oxygen in haemoglobin from the lungs to the body’s tissues and transporting carbon dioxide waste back to the lungs to be exhaled
white blood cells
“leucocyte”
responsible for protecting your body from infection
Plasma
the yellowish, liquid component of blood that carries blood cells, nutrients, waste products, proteins, and hormones throughout the circulatory system
What are the 6 functions of the ciculatory system
Respiration-Delivers oxygen to the cells and removes carbon dioxide from them.
Nutrient transport- Carries digestive food substances to the cells of the body eg vitimens minirals sugar fats and protien
Waste removal- Disposal of waste products and poisons that would harm the body if they accumulated
Eg, Carbon dioxide, urea ect
Immunity- Helps protect the body from dieses
Cellular Communication- The circulatory system provides a mode of transport for hormones
eg insulin, estrogen, growth hormones
Thermoregulation- The circuatory system transports heat to warm and cool the body
What is the process of the circulatory system
Inferior (below) vena cava & superior vena cava
l
Right atrium
l
Tricuspid valve
l
Right ventricle
l
Pulmonary (relates to lunges) Valve
l
Pulmonary (relates to lungs) artery (away)
l
Lungs
l
Alveoli (gas exchange “diffusion”)
l
Pulmonary vein
l
Left atrium
l
Mitral valve
l
Left ventrical
l
aortic (to aorta) valve
l
aorta to body
Formula for the amount of blood pumped by heart
Heart Rate X Stroke volume (amount of blood per pump ml) = Cardiac output (CO) in L
Difference between an elite athlete and normal
elite athlete
low heart rate and higher stroke volume (amount of blood per pump)
bigger cardiac muscles
normal person
higher heart rate and lower stroke volume
