pathophysiology and life span development

aerobic metabolism

The cellular process in which oxygen is used to metabolize glucose efficiently, producing minimal waste products.

anaerobic metabolism

The cellular process in which glucose is metabolized for energy without oxygen, resulting in inefficient energy production and many waste products.

cardiac output

The amount of blood ejected from the heart in one minute, calculated as heart rate multiplied by stroke volume.

chemoreceptors

Chemical sensors in the brain and blood vessels that detect changing levels of oxygen and carbon dioxide.

dead air space

Air that occupies the space between the mouth and alveoli but does not reach the area of gas exchange.

dehydration

An abnormally low amount of water in the body.

diaphoresis

Sweating; a condition characterized by cool, pale, and moist/sweaty skin.

edema

Swelling resulting from the movement of water into the interstitial space.

electrolyte

A substance that, when dissolved in water, dissociates into charged particles.

FiO2

Fraction of inspired oxygen; the concentration of oxygen in the air we breathe.

hydrostatic pressure

The pressure within a blood vessel that tends to push water out of the vessel.

hypersensitivity

An exaggerated response by the immune system to a particular substance.

hypoperfusion

Inability of the body to adequately circulate blood to the body’s cells.

Adolescence

Stage of life from 13 to 18 years characterized by identity exploration and bonding, ensuring personal needs are met.

Early adulthood

Stage of life from 19 to 40 years, often focused on establishing personal and social relationships.

Infancy

Stage of life from birth to 1 year of age, marked by rapid physical and cognitive development.

Late adulthood

Stage of life from 61 years and older, often involving reflection on life and dealing with aging.

Middle adulthood

Stage of life from 41 to 60 years, typically associated with career stability and family responsibilities.

Moro reflex

A response to being startled in which the infant throws out both arms, spreads the fingers, then grabs with fingers and arms.

Palmar reflex

A grasping reflex in which an infant grabs onto a finger placed in the infant’s palm.

Preschool age

Stage of life from 3 to 5 years, during which social skills and basic learning begin to develop.

Rooting reflex

A reflex response where a hungry infant automatically turns toward the stimulus when the cheek or one side of the mouth is touched.

Scaffolding

The process of building on what one already knows to enhance learning and understanding.

School age

Stage of life from 6 to 12 years, focused on learning and social interactions.

Sucking reflex

A reflex in which stroking a hungry infant’s lips causes the infant to start sucking.

Temperament

The infant’s characteristic reaction to their environment, influencing their behavior and interactions.

Toddler phase

Stage of life from 12 to 36 months, characterized by increased mobility and exploration.

Trust versus mistrust

The concept that develops from an orderly, predictable environment versus a disorderly, irregular environment during infancy.