Human Organsim Flashcards
Anatomy
The study of body structures
Gross Anatomy
The study & examination of structures without a microscope
System
A group of organs that share a common set of functions & act as a unit
Systemic Anatomy
Structures that are studied by their systems
Regional Anatomy
Studying all systems simultaneously within a given region
Surface Anatomy
The study of external features that can be seen or felt along the skin
Physical Examination
The application of surface anatomy
Palpation
Examination by touch
Ansculation
The act of listening (with a stethoscope)
Microscopic Anatomy
Cytology: cellular anatomy
Histology: study of tissues
Physiology
The study of processes and functions of living things
Pathology
Structural and functional changes caused by disease
What are the 6 levels of organization?
Chemical, cellular, tissue, organ, system, organism
Anatomical Imaging
Allows non-invasive analysis of internal structures
X-ray
Uses shortwave electromagnetic radiation to visualize bone and some hollow organs; (following an injected dye)
CT (computed tomographic) Scan
Cross-sectional imaging using X-rays which produce detailed images of internal organs; detects bone/joint problems, bloodclots, cancers, etc.
Ultrasound
High frequency sound waves strike internal organs & bounce back to receiver, which is then analyzed to generate a sonogram image; detects condition of fetus & soft tissue abnormalities
MRI (magnetic resonance imaging)
Radio waves are directed towards a person inside an electromagnetic field; visualizes tumors, strokes, & disc herniations
DSA (digital subtraction angiography)
1.) radiographic image is taken
2.) radiopaque dye is injected into blood
;visualizes blood vessels
PET (positron emission tomographic) Scan
Nutrients (glucose) are radioactively labeled & taken up by cells; radiation is detected & analyzed; identifies cells that are metabolically active
Integumentary System
Major organ- skin
Protects & regulates temperature, prevents water loss, produces vitamin D
Skeletal System
Major organ- bones
Protects, supports, enables body movement, produces blood cells, & stores minerals
Muscular System
Major organ- skeletal muscle
Produces body movements, maintains posture, & produces body heat
Nervous System
Major organs- brain & spinal cord
Provides sensory input, initiates motor responses, & plays a crucial role in consciousness, memory, learning, emotion, etc.