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Body Systems
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ANATOMY – study of the parts of the body
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PHYSIOLOGY – function of the body
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ANATOMICAL POSITION – standing erect with face forward, arms at the side, palms forward
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Anatomic Terminology – Position and Direction
ANTERIOR or VENTRAL – front or in front of POSTERIOR or DORSAL – back or in back of
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CRANIAL – refers to the head of the body
CAUDAL – means tail end
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SUPERIOR – upper or above something
INFERIOR – lower or below something
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MEDIAL – toward the middle
LATERAL – toward the side of the body
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PROXIMAL – toward the point of attachment to the body or the trunk of the body DISTAL – away from the point of attachment to the body
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DEEP (INTERNAL) – inside the body
SUPERFICIAL (EXTERNAL) – near the surface or outside the body
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Body Planes and Sections
PLANES – imaginary anatomical dividing planes SECTION – cut made through the body in the direction of a certain plane
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SAGITTAL PLANE – divides the body into right and left parts
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CORONAL (FRONTAL) PLANE
– vertical cut at right angles to saggital plane, divides the body into anterior and posterior portions
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TRANSVERSE PLANE – cross-section, a horizontal cut that divides the body into upper and lower parts
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Cavities of the Body DORSAL CAVITY – contains brain and spinal cord –
the brain is in the CRANIAL CAVITY and the spinal cord is in the SPINAL CAVITY.
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ANTERIOR or VENTRAL CAVITY
contains the THORACIC and ABDOMINOPELVIC CAVITIES
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Thoracic cavity Contains the lungs and heart
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ABDOMINAL CAVITY contains stomach, intestines, liver, gallbladder
and pancreas
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PELVIC CAVITY contains urinary bladder and reproductive organs
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Abdominopelvic Cavity Regions
Rt. Hypochondriac Lt. hypochondriac Epigastric Rt. Lumbar Lt. Lumbar Umbilical Rt. Inguinal Hypogastric Lt. Inguinal
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TISSUES – cells grouped because they are similar in shape, size, structure, and function
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EPITHELIAL TISSUE – protects the body by covering internal and external surfaces, and produces secretions
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CONNECTIVE TISSUE – supports and connects organs and tissue
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MUSCLE TISSUE – has the ability to contract and move the body
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NERVOUS TISSUE – cells that react to stimuli and conduct an impulse
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ADIPOSE TISSUE – type of connective tissue that stores fat cells
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LIGAMENTS – strong, flexible bands of connective tissue that hold bones firmly together at the joints
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TENDONS – white bands of connective tissue attaching skeletal muscle to bone
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CARTILAGE – firm, flexible support of the embryonic skeleton and part of the adult skeleton
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MEMBRANES – formed by putting two thin layers of tissue together, cells may secrete a fluid
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MUCOUS MEMBRANES – lines digestive, respiratory, reproductive and urinary systems – produces mucous to lubricate and protect the lining
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SEROUS MEMBRANES – double-walled membrane - produces a watery fluid, lines closed body cavities the outer part of the membrane that lines the cavity is the PARIETAL membrane
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VISCERAL membrane the part that covers the organs
PLEURAL MEMBRANE – lines thoracic or chest cavity and protects the lungs
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PERICARDIAL MEMBRANE – lines the heart cavity and protects the heart
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PERITONEAL MEMBRANE – lines the abdominal cavity and protects
organs
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Organs and Systems ORGAN SYSTEM – a group of organs which act together to perform a specific, related function
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INTEGUMENTARY SYSTEM
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SKELETAL SYSTEM
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MUSCULAR SYSTEM
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DIGESTIVE SYSTEM
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RESPIRATORY SYSTEM
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CIRCULATORY SYSTEM
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EXCRETORY SYSTEM
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NERVOUS SYSTEM
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ENDOCRINE SYSTEM
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REPRODUCTIVE SYSTEM
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