Part 1 Flashcards
White blood cell roll
Fight off infection and kill bacteria
Red blood cells job
Carry oxygen to living tissues and carries out co2
Plasma
- made up of _____ + _____
- what’s its role
- what causes plasma levels to drop
Protein and salt
Transport blood around the body
Lack of water
What does the right side of the heart do?
Pumps deoxygenated blood into the lungs
What does the left side of the heart do?
Pimps oxygenated blood through the body
Describe the process of the heart
- pulmonary
- aortic
- midral
- tricuspid
Pulmonary -controls blood flow from right ventricle into the pulmonary arterys
Explain myocardial infarction
Blockage from coronary artery = loss of blood to myocardium = dead of tissue
Valves job…
To prevent venous pooling
Electrical activity of the heart
Look at spreadsheet long process
Systole and diastole
Systole- ventricular contraction working phase
Diastole-reaction phase 70%
Sympathetic and parasympathetic nerves roles
Sympathetic- causes heart rate to increase
Parasympathetic - causes heart rate to decrease
What nerves make up the ventricles and separately the atria
Ventricles- sympathetic
Atria- both : sympathetic and parasympathetic
Normal heart rate
Bradycardia
Tachycardia
Normal heart rate 50-100
Bradycardia below 60
Tachycardia 100+
Blood pressure
A measure of the forced blood against the arterial walls
Blood pressure
Systolic
Diastolic
Systolic - a measure of the aorta during the systole
Diastolic- a measure of the aorta during diastole
Normal blood pressure
High blood pressure
Normal blood pressure 120/80
High blood pressure S= 140 or D= 90
Measuring the work of the heart
B.E.S.T.C
Stroke volume Ejection fraction Cardiac output Blood pressure Total peripheral resistance
Stroke volume
The volume of blood being ejected from the left ventricle during systole
Ejection fraction is…
How much blood in the ventricle was actually pumped out
Cardiac output equation
Heart rate X stroke volume = cardio output
Blood pressure equation
Cardiac output X total peripheral resistance = blood pressure
2 ways blood pressure medication can help
Lower heart rate
Decrease the resistance in the vascularise
Total pertinence resistance means
A measurement of how easily blood flows from arteliroes into the capillaries
Vo2 Mac define
The highest amount of oxygen that the body can use to generate aerobicly
Improve vo2 max - 3 points
Improving cardiac output
Improve the ability of skeletal muscle to utilise oxygen
Improve oxygen carrying capacity in the bloody
During exercise4 points
Increase in cardiac output
Increase in stroke volume
Increase in heart rate
Increase in demand by working muscles
During workout 4 points
Levelling on the heart rate - steady state
Increase in systolic blood pressure
Decrease / no change in diastolic blood pressure
Decrease in total peripheral resistance
The heart effects of cv training
Increase in weight and volume of the heart
Increase size in left ventricle and left wall
Improved stroke volume
Reduced heart rate
What do playlets do?
Clot blood
