cardio vascular system Flashcards
Health
Complete physical, mental and social well being, not merely the absence of disease and infirmity
Fitness
The ability to meet demands of the environment
Stroke Volume
The volume of blood pumped out of the ventricles during each contraction
Cardiac Output
The volume of blood pumped out of the ventricles per minute (HR x Stroke volume)
Sympathetic Nervous System
Part of the ANS and can activate an INcrease in HR
Parasympathetic Nervous System
Part of the ANS and can activate a DEcrease in HR
Vascular Shunting
The redistribution of blood flow around the body.
Myogenic
The hearts ability to create its own contraction
Chemoreceptors
Responsible for detecting a change in CO2/Lactic Acid / blood acidity
Baroreceptors
Responsible for detecting a change in blood preassure
Proprioceptors
detecting change in muscle movement
Plasma
Liquid part of blood
MYoglobin
An oxygen binding protein found in muscle tissue
Haemoglobin
oxygen binding protein found in red blood cells
Oxyhemoglobin
found when oxygen binds with hemoglobin
Mitochondria
The part of the cell where respiration and energy production occur
Disassociation Curve
graph representation of the rate at which oxygen separates from haemoglobin and diffuses into muscle cells.
Bohr Shift
The shift to the right that the disassociation curve makes during exercise
Venous Return
The flow of blood back to the heart via the veins and specifically the vena cava
Starlings Law
Stroke volume increases due to an increase in the venous return
Cardiovascular Drift
The increase of HR during when taking part in steady state exercise in a warm environment
Arterio-venous oxygen difference
difference between the pressure of the oxygen in the arteries and the veins
