The epiglottis is a fold of cartilaginous tissue located above the glottis in the pharynx. During normal swallowing the larynx moves upward and the epiglottis folds over the glottis. This prevents substances from entering the respiratory system.

The mitral valve is also known as the bicuspid, which controls blood flow between the opening of the left atrium into the left ventricle.

Lactic acid buildup occurs when the demand for energy exceeds the tissues ability to process the metabolic waste. Sprinting is the only activity mentioned that can create this scenario.

The client is displaying a grade 1 injury and should heal quickly with rest and proper care. A grade 2 injury is experienced during and after an activity. A grade 3 injury is mild to moderate pain at all times with mild swelling and partial loss of functional use. A grade 4 injury is moderate to severe pain at all times with loss of functional use by a serious pathological disorder.

Zoning ordinances and regulations are local laws that govern how a property can be used. Always check with the local municipality before making any major changes to a home or office.

Any client who routinely requests to explore beyond the professional environment is testing the boundaries and professionalism of the therapist. Remember, the therapist is always at fault for allowing a breach of professional boundaries. The repercussions can lead to a hefty fine and/or loss of a massage license.

The cerebral cortex is the largest part of the brain and plays a key role in awareness, communication, consciousness and memory.

Olfaction is the sense of smell. Special sensory cells in the nasal cavity called olfactory sensors are designed to transmit the sense of smell via the detection of odor molecules.

Stretch reflex or myotatic reflex is an automatic muscle contraction in response to a stretching of muscle fibers. In this case, during the event of losing balance, muscles are stretched and triggered to automatically contract as a means of regaining balance.

The circadian rhythm is a term used to describe biological process that are governed by external factors like light and darkness or temperature. The circadian rhythm was first recorded in the 4th century BC and has been researched ever since. The evidence points to this clock being reset every 24 hours.