Paper 1 AO1 Flashcards
(58 cards)
Define Rotation
A circular movement around a joint
Define Circumduction
This is where the limb moves in a circle ( rotation + another joint action )
Give the function of the synovial fluid
A clear slippery liquid that lubricates the joint
Which mineral is needed for bone formation
Calcium
Identify three characteristics of veins
Carry deoxygenated blood back to the heart , thinner and less elastic walls, have values to prevent backflow of blood , low pressure , wide lumen
Identify three characteristics of arteries
Have thick walls , carry oxygenated blood at high pressure away from the heart , have no valves , thick muscular elastic walls , arterioles, narrow lumen
Identify three characteristics of capillaries
Microscopic, thin walls , 1 cell thick , link arteries to veins , allow 02 / C02
Define systolic blood pressure
When the heart contracts and empties
Define diastolic blood pressure
When the heart relaxes and fills and blood
Define hypertension
High blood pressure in the arteries
Describe the cardiac cycle
The process of the heart going through the stages of systole and diastole in the atria and ventricles
What is meant by stroke volume
Volume of blood pumped out of the heart by each ventricle during one contraction
What is lactic acid
Mild poison that builds up in muscles due to anaerobic exercise and can cause pain , fatigue and cramp
Identify 3 short term effects of exercise
Tired , fatigue , nausea , headaches , aching , DOMS , cramp
Identify three long term effects of exercise
Change in body shape for the better , muscles increase in size (hypertrophy) , heart increases in size ( cardiac hypertrophy) , lower resting heart rate (bradycardia) , improved COF
Describe a 1st class lever
Fulcrum lies between the effort and resistance
Describe a second class lever
The fulcrum lies at one end with the effort at the other end and the resistance in the middle
Describe a third class lever system
The fulcrum lies at one end and the resistance is at the other end with the effort located between the fulcrum and the resistance
Define mechanical advantage
The efficiency of a working lever
Mechanical advantage = effort / weight (resistance) arm
2nd class has the highest
Anything over 1 is considered high
Describe sagital axis
Through the belly button
Describe the transverse axis
Through the hips
Describe the longitudinal axis
Head to toe
Describe the sagital plane
Splits body into Left and right
Goes from head to toe
Describe the frontal plane
Forwards and backwards