Heart
List the four main chambers of the heart
Right and left Atrium/ ventricles
The blood in our body is made up of about 55% _____
plasma
Vasodilation is the process in which blood vessels ______
increase in diameter
Define respiratory rate
The amount of breaths taken per minute
What is Tidal Volume?
The amount of air breathed in and out of the lungs per breath
Outline one function of the cardiovascular system
Keeps blood circulating through the body
Delivers oxygen and nutrients to cells
Remove waste from cells.
Outline the main function of white blood cells
Fight infection and builds body immunity
Blood vessels decreasing in diameter is called _____
vasoconstriction
Cardiac output is calculated by
Multiplying Stroke volume x Heart rate
What name is given to the tiny air sacs in which gaseous exchange takes place?
Alveoli
How do you calculate somebodys max heart rate?
220 - age
Haemoglobin is a protein found in _______
red blood cells
A small blood vessel that connects arteries and veins is called...
Capillaries
During inspiration, the diaphragm ______ and moves _____
Contracts and moves downwards
The exchanging of O2 and CO2 molecules from a high to low concentration is called
diffusion
True or False. The stroke volume of a trained athlete would be higher than that of an untrained athlete
True.
Outline the main role of Haemoglobin?
Carries oxygen from the lungs to the working muscles
This blood vessel carries oxygenated blood away from the heart
artery
During Expiration - what happens to the inter-costal muscles and diaphragm?
They both relax
The capillaries transport _____ into the alveoli during gaseous exchange
carbon dioxide
Deoxygenated blood travels from the heart to the lungs via the ______
pulmonary artery
Name the 4 components of blood
Red blood cells, white blood cells, plasma, platelets
What is the name of the largest artery in the body?
The Aorta
Identify the 7 main structures of the respiratory system
Nasal Cavity, Pharynx, larynx, trachea, bronchi, bronchioles, alveoli
Ventilation is calculated by
Multiplying Respiratory rate and tidal volume