Gagging is a reflex that prevents choking by moving food forward. It's controlled by the brain stem and involves pharyngeal muscle contractions. Gagging differs from choking, which occurs when airway is partially blocked
Treats gastric reflux, reflux oesophagitis and heartburn, including pregnancy. Contains lowest sodium content in Gaviscon range. Available in 200ml and 500ml liquid sizes. Contains sodium alginate, calcium carbonate and fennel flavour
The spinal cord extends from the foramen magnum to the first and second lumbar vertebrae. It is protected within the vertebral canal and meninges. The spinal cord contains gray matter (H-shaped) and white matter. There are 31 pairs of spinal nerves, named by vertebrae
Bainbridge reflex increases heart rate in response to increased venous filling. Reflex detected by stretch receptors in right atrium via vagus nerve. Regulated by medulla oblongata and involves sympathetic nervous system. Can raise heart rate by 40-60%
Interneurons are neurons that connect sensory and motor neurons to the CNS. They are divided into local and relay types. Approximately 20-30% of neurons in human neocortex are interneurons
Reflex is an involuntary, nearly instantaneous response to a stimulus. Occurs via neural pathways called reflex arcs. Neural signals travel from stimulus to synapse to motor neuron. Many reflexes don't travel to brain, requiring no conscious thought