Over a million students use our free study notes to help them with their homework
The heart is made up of four chambers; the left atria, left ventricle, right atria and the right ventricle. The cardiac cycle is made up of repeating phases of systole (contraction) and diastole (relaxati...
ADH (anti diuretic hormone) is a hormone that is released when the hypothalamus detects high blood osmolarity or when blood pressure is low. It is released from the posterior pituitary gland into the bloo...
The immune system usually makes antibodies to destroy foreign pathogens that may harm the body. However, in autoimmune disease, the body produces antibodies that recognise the body's own cells or enzymes ...
Homeostasis is the maintenance of internal environments within a set narrow range (based around a set point) which is critical for survival. The environment remains relatively stable so reactions can occu...
The presence of calcium ions causes tropnonin to detach from tropomyosin-this exposes the mysoin head binding sites. Myosin head groups attach to the surrounding actin filaments forming a cross bridge....
←
398
399
400
401
402
→
Internet Safety
Payment Security
Cyber
Essentials
