### usefulness | function:

Brain function
* declines when oxygen levels fall due to a high-fat diet.
* is influenced for better or worse by drugs of various types.
* relies on appropriate protein.
* starts extremely early during the second month of pregnancy.

Cardiac function
* are assessed by examinations.
* is altered by neural activation.
* risk factor for paralysis in thoracoabdominal aortic replacement.

Cell function
* Some cell functions are common to both tracheal cells and midline glia.
* is affected by a large variety of signals from the extracellular environment
  - very dependent on the ambient temperature

Cellular function
* Most cellular functions are sensitive to redox state.
* depends on plus and minus charges.
* take place in the cytoplasm.

### usefulness | function:

Cognitive function
* are mildly impaired and strongly lateralized to the right hemisphere.
* depend on a network of brain regions.
* is as rich and diverse a domain as sensory function
  - enhanced when carbohydrate is ingested as a hydration technique
  - partly related to what's known as the brain-gut axis
  - studied using word pair selection biases
  - the mental process of knowing, thinking, learning and judging
* major factor in a person's functional capacity.
* ranges anywhere from moderate retardation to near-normal.
* refers to someone's ability to plan, remember, and exercise good judgment.

Enzyme function
* depends on the environment in which the reaction is occurring.
* variable activity, as is liver function.

Exponential
* are important for modelling different types of growth
  - mapping
* arise naturally as the solutions to differential equations.
* per capita rate.
* start slowly and remain disarmingly out of sight.

Hash function
* are fixed values derived mathematically from a text message.
* have a wide variety of properties.

Immune function
* is assessed using energy panels in vivo or using patient serum in vitro
  - decreased and infection is common and often is the cause of death
  - dependent on iron-containing enzymes
  - extremely complex and is influenced by a multitude of nutritional variables
  - weaker when people are in a bad mood
* seems to play a prominent role in development and dissemination of melanoma.

Kidney function
* can worsen with pregnancy.
* decreases due to kidney atrophy.
* does decline with age.

Life function
* All life functions are confined within the boundaries of a single cell.
* are the processes that animals rely on to stay alive.

Logarithmic function
* are the inverse of exponential functions.
* turn multiplication into addition.

Loss of function
* can be mild jaw stiffness to being unable to open the jaw barely at all.
* is seen in lymphomas and lymphocytic leukemia.

Lung function
* can improve with recovery.
* describes how well a person can move air in and out of the lungs.
* increases up to thirty percent.
* is measured after the exercise test is complete.

Mental function
* All mental functions are part of the complex activity of prakriti.
* can deteriorate in advanced cases
  - vary from severely impaired to normal intelligence
* is characterized by apathy, dullness, exhaustion, and depression
  - clouded by heroin's effect on the central nervous system
* undergo deterioration.

Mitochondrial function
* Some mitochondrial functions are performed only in specific types of cells.
* declines with age.
* depends upon the coordinate action of two genomes.
* is greatly impaired during apoptosis
  - therefore detrimental to the fidelity of mitochondrial replication

Motor function
* are the voluntary movements of our muscles.
* responds to stimuli by initiating muscular contractions or glandular secretions.

Physiological function
* Every physiological function depends on water.
* Some physiological functions associate with activations.
* is based on substance.