Anaerobic respiratory system The anaerobic respiratory system supplies energy very quickly for sports such as vaulting in gymnastics or throwing a javelin where the activity only lasts a few seconds. This system breaks down glucose into lactic acid. It produces energy very quickly. Glucose → energy + lactic acid Athletes showing signs of fatigue and pain towards … Continúa leyendo Aerobic and anaerobic exercise

Structure of the skeletal system The main bones of the skeleton and their location are shown here:   Vertebral column The vertebral column is divided into five main sections and each contains a specific number of vertebrae.There are 33 vertebrae in total – the upper 24 vertebrae are articulating and separated from each other - there are … Continúa leyendo The skeletal system

Structure of the respiratory system Passage of air into the lungs Air enters the body and is warmed as it travels through the mouth and nose. It then enters the trachea. The trachea divides into two bronchi. One bronchus enters each lung. Each bronchus branches out into smaller tubes called bronchioles. Air travels through these … Continúa leyendo The respiratory system

Structure of the cardiovascular system If you clench your hand into a fist, this is approximately the same size as your heart. It is located in the middle of the chest and slightly towards the left. The heart is a large muscular pump and is divided into two halves - the right-hand side and the … Continúa leyendo The cardiovascular system

Muscle types There are three types of muscle in the body: smooth muscle – found in the internal organs and blood vessels - this is involuntary cardiac muscle – found only in the heart - this is involuntary skeletal muscle – attached to the skeleton - this is voluntary Involuntary muscles are not under our conscious control which means … Continúa leyendo The muscular system