Synapses: Structure & Function Structures known as synapses are found at the junctions between cells in the nervous system e.g. In the sense organs there are synapses between sensory receptor c...
Transmission of Nerve Impulses Neurones transmit electrical impulses which travel along the neurone cell surface membrane from one end of a neurone to the other Note that an impulse is not an elect...
Nervous System: Response to a Stimulus The nervous system enables the body to detect changes in the environment and brings about appropriate responses to ensure its safety Receptor cells detect cha...
Neurones: Structure & Function Neurones are specialised cells of the nervous system which carry electrical impulses around the body A bundle of neurones is known as a nerve There are different ...
Co-ordination of Response Organisms must respond to changes in their external and internal environments in order to survive Organisms need to Find favourable external conditions e.g. avoiding locat...
Modern Medicine & Participation in Sports Keyhole surgery Sports injuries are a common occurrence since the body is placed under stress when participating in sporting activities Some of these i...
Intensity of Exercise Effects of too little exercise on health Exercise is an important part of a healthy lifestyle Not doing enough exercise can have a detrimental effect on the health of an indiv...
Practical: Investigating the Effects of Exercise Measuring breathing There are four main ways that breathing can be scientifically measured. These include: Tidal volume - this is the volume of air ...
Variations in Breathing Rate & Heart Rate During exercise, muscle contraction occurs more frequently, requiring more energy The rate of aerobic respiration increases to meet the increase in ene...
