Chapter 1 OrganizationOf The Human Body Flashcards
The science of body structures and relationships among the structures.
Anatomy
The science of body functions.
Physiology
The first eight weeks of development after fertilization of a human egg
Embryology
Cellular structure and function
Cell Biology
Microscopic structure of
tissues.
Histology
Structures that can be
examined without a microscope
Gross Anatomy
Structure of specific
systems of the body such as the nervous or respiratory systems
Systemic Anatomy
Specific regions of the
body such as the head or chest.
Regional Anatomy
Surface markings of the
body
Surface Anatomy
Structural changes
associated with disease.
Pathological Anatomy
the sum of all the chemical
processes that occur in the body
Metabolism
is the breakdown of complex
chemical substances into simpler components
Catabolism
is the building up of complex
chemical substances from smaller, simpler
components
Anabolism
the condition of equilibrium
in the body’s internal environment.
Homeostasis
dilute, watery solutions
found both inside cells and surrounding
cells.
Body fluids
the fluid within
body cells
Intracellular fluid (intra- = inside), ICF
the fluid
outside body cells
Extracellular fluid (extra- = outside), ECF
ECF filling spaces between cells
Interstitial fluid
ECF within blood vessels
Blood plasma
ECF within lymphatic vessels
Lymph
ECF in and around
the brain and spinal cord
Cerebrospinal fluid
ECF in joints
Synovial fluid
two
different types of ECF within the eyes
Aqueous humor and Vitreous body
two control
systems of the body
– Nervous system, by means of nerve impulses
– Endocrine system, by means of hormones
– Operate mainly through negative feedback systems
Components of a
feedback system are
– Receptor
– Control center
– Effector
Most commonly used
feedback system
Reverses a change in a
controlled condition
Negative feedback system
Strengthens or reinforces a
change in one of the body’s
controlled conditions
Continues until interrupted by
some mechanism outside the
system
Positive feedback system
any abnormality of structure or
function
Disorder
more specific term for an illness
characterized by recognizable signs and
symptoms.
Disease (Local and Systemic)
objective changes that can be
observed and measured (such as swelling, rash, fever, high blood pressure)
Signs
subjective changes not apparent
to an observer (such as headache, nausea,
anxiety)
Symptoms
Cephalic
Head
Cranial
Skull
Cervical
Neck