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Chapter 2. The Human Body in Health and Disease. Anatomic Reference Systems. Describe the location and functions of body parts using: Body planes Body directions Body cavities Structural units. Standard Anatomical Position. ANTERIOR VS POSTERIOR.
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Chapter 2 The Human Body in Health and Disease
Anatomic Reference Systems • Describe the location and functions of body parts using: • Body planes • Body directions • Body cavities • Structural units
ANTERIOR VS POSTERIOR • Anterior refers to the front of the body • Posterior refers to the back of the body
BODY PLANES • LINE THROUGH THE BODY AT VARIOUS PARTS TO SEPARATE THE BODY INTO SECTIONS
TRANSVERSE PLANE • ONE OF THREE MAIN PLANES
TRANSVERSE PLANE • DIVIDES BODY INTO TOP AND BOTTOM HALF
SUPERIOR • BODY PARTS ABOVE OTHER PARTS
INFERIOR • BODY PARTS BELOW OTHER PARTS
CAUDAL • BODY PARTS LOCATED NEAR THE SACRAL REGION OF THE SPINAL COLUMN OR TAIL
CRANIAL • BODY PARTS LOCATED NEAR THE HEAD
MIDSAGITTAL OR MEDIAN PLANE • SECOND OF THREE PLANES
MIDSAGITTAL OR MEDIAN PLANE • DIVIDES THE BODY INTO RIGHT AND LEFT SIDES
MEDIAL • BODY PARTS CLOSE TO MIDLINE OR PLANE
LATERAL • BODY PARTS AWAY FROM THE MIDLINE OR PLANE
VENTRAL OR ANTERIOR • BODY PARTS IN FRONT OF THE BODY • ANTERIOR IS THE TERM FOR DIRECTION • VENTRAL IS THE TERM FOR MOVEMENT
DORSAL OR POSTERIOR • BODY PARTS IN BACK OF THE BODY • POSTERIOR IS THE TERM OF DIRECTION • DORSAL IS THE TERM OF MOVEMENT
PROXIMAL • BODY PARTS CLOSE TO THE POINT O R REFERENCE • EXAMPLE MAIN TRUNK OF THE BODY IS A POINT OF REFERENCE TO THE ARMS AND LEGS • EXAMPLE : THE NOSE IS PROXIMAL TO THE SHOULDER
DISTAL • BODY PARTS AWAY FROM THE POINT OF REFERENCE • EXAMPLE: TOES ARE DISTAL TO THE THIGH
Cytology • The study of the formation, structure, and function of cells, including: • Chromosomes • DNA • Genetics
Histology • The study of tissues, which are composed of cells that join together to perform specific functions, including: • Nervous Tissue • Epithelial Tissues • Connective Tissues • Muscle Tissue
Glands • Specialized cells that secrete material used elsewhere in the body, including: • Exocrine Glands • Endocrine Glands
Organ and Body Systems • Body parts are organized into systems according to function. • Examples: • Skeletal System • Muscular System • Cardiovascular System
Pathology • The study of structural and functional changes caused by disease.
CHROMOSOMES • The nucleus of each cell contains 46 chromosomes, arranged in 23 pairs • Sex cells are known as gametes