Heart
What is heart rate measured in
beats per minute (bpm)
What is the liquid portion of blood?
plasma
Sites of gas exchange
Capillaries at muscle and alveoli
Where deoxygenated blood enters the heart
right atrium
White blood cells
Largest artery in the body
Aorta
Name the four chambers of the heart. (Remember right and left)
Right and Left Atrium, Left and Right Ventricle
What chamber does the blood return to once it leaves the lungs.
Left Atrium
Heart chamber that supplies oxygenated blood to the body
Left Ventricle
What type of blood is in the pulmonary artery(oxygenated or deoxygenated)
deoxygenated
What is the name of the valve between the right atria and right ventricle
Tricuspid
The cardiovascular system is a closed system which consists of :
Blood
Heart
Blood Vessels
Blood vessel that carries blood from the lower body into the right atrium
Inferior vena cava
Blood vessel carrying oxygenated blood to the left atrium
pulmonary vein
What is the component of red blood cells that help carry oxygen
haemoglobin
The heart wall is made mostly of what
muscle
why are their valves in hearts?
to stop blood from flowing back
Bundles of simple squamous epithelium in the lungs where O2 & CO2 are exchanged
Alveoli
Why does heart rate increase when exercise increases
To supply enough blood/oxygen to working muscles
Name all components of blood
plasma
white blood cells
platelets
red blood cells
What is the function of the capillaries?
Exchange System. Exchange nutrients, gases, and waste products.
What is another name for the Mitral valve?
Bicuspid valve
What is the main function of the heart?
to pump enough blood to deliver a continuous supply of oxygen and other nutrients to the brain