Ch 1 Flashcards
Anatomy
The science of body structures and the relationship among structures.
Physiology
The science of the function structures. - how body parts work
Homeostasis
Maintaining a relatively stable environmentdition within the body. (Internal environment) can be cell.
Disease
An illness is characterized by a recognizable set of signs and symptoms or symptoms. (or change in homeostasis).
Symptom
changes in the body functions that are not apparent to the observer.
(ex: pain, head ache)
Sign
Objective changes that an observer can measure. (ex: fever, blood pressure, pulse and rash)
Diagnosis
The art of distinguishing one disease from another.
Determining nature of the disease.
Receptor:
Structure that monitors changes in the body and sends impulses to the control center.
Control center:
Receives info from receptors, evacuates info associated with homeostatic levels, and generates output (a response) as necessary.
Negative Feedback Loop
the system reverses the original change, that is the body’s response is to maintain physiological levels within the body.
(ex: maintaining body temp, bl pH and bl sugar levels).
Effector:
A body structure that produces a response that is coordinated through the control center.
Positive Feedback Loop
This system reinforces (strengthens) the original change or the controlled condition.
(ex: contraction of muscles during delivery)
Mid- sagittal plane:
a plane that divides equally into left and right portions.
Parasagittal plane:
any plane that is parallel to the mid sagittal plane
Frontal (Coronal) Plane:
divides the body or organ into anterior or posterior portions,
