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Language of Anatomy. Anatomical Terms, Directional Terms, Regional Terms, Body Planes, and Body Cavities. Anatomical Position. Always assume body is in anatomical position to accurately describe body parts and position Body is erect Feet parallel, shoulder width apart
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Language of Anatomy Anatomical Terms, Directional Terms, Regional Terms, Body Planes, and Body Cavities
Anatomical Position • Always assume body is in anatomical position to accurately describe body parts and position • Body is erect • Feet parallel, shoulder width apart • Palms to the side facing forward
Directional Terms • Explains where one body structure is in relation to another
Superior (Cranial, Cephalad) & Inferior (Caudal) Superior Inferior • Toward the head or upper part of a structure of the body, above • Ex: The forehead is superior to the nose • Away from head end or toward lower part of body, below • Ex: The navel is inferior to the breastbone
Anterior (Ventral) &Posterior (Dorsal) Anterior Posterior • Toward the front of the body • Ex: The breastbone is anterior to the spine • In four legged animals, ventral refers to the belly of an animal • Toward the backside, behind • Ex: The heart is posterior to the breastbone
Medial &Lateral Medial Lateral • Toward or at midline of body, inner side • Ex: Heart is medial to arm • Away from midline of body, outer side • Ex: Arms are lateral to the chest
Intermediate • Between a more medial and a more lateral structure • Ex: Armpit is intermediate between the breastbone and shoulder
Proximal &Distal Proximal Distal • Close to the origin of body part or point of attachment of a limb to the body of the trunk • Ex: Elbow is proximal to wrist • Farther from origin of body part or point of attachment of limb to body trunk • Ex: Knee is distal to thigh
Superficial &Deep Superficial Deep • Toward body surface • Ex: Skin is superficial to skeleton • Away from body surface, more internal • Ex: Lungs are deep to the ribcage
Practice • The wrist is blank to the hand PROXIMAL • The breastbone is blank to the spine Anterior (Ventral) • The brain is blank to the spinal cord Superior • The lungs are blank to the heart Lateral • The fingers are blank to the thumb Distal
Anterior Body Landmarks • Abdominal- anterior body trunk inferior to ribs • Acromial-point of shoulder • Antecubital-anterior surface of elbow • Axillary-armpit • Brachial-arm • Buccal-cheek • Carpal-wrist • Cervical-neck • Coxal-hip • Crural-leg • Digital-fingers, toes • Femoral-thigh • Fibular-lateral part of leg • Inguinal-groin • Nasal-nose • Oral-mouth • Orbital-eye • Patellar- anterior knee • Pelvic-anterior pelvis • Pubic-genital region • Sternal-breastbone • Tarsal-ankle • Thoracic-chest • Umbilical-naval
Posterior Body Landmarks • Cephalic-head • Deltoid- curve of shoulder • Gluteal-buttock • Lumbar-area of back between ribs and hips • Occipital-posterior side of head • Popliteal-posterior knee area • Sacral-area between hips • Scapular-shoulder blade region • Sural-calf • Vertebral-area of spine
Body Landmarks Anterior Posterior
Body Planes and Sections • Section-cut • Sagittal section- cut made lengthwise, dividing body into right and left parts. • If its exactly in the middle it’s called a midsaggitalsection • Frontal/ coronal section- cut made that divides body into anterior and posterior • Transverse/cross section-cut made along horizontal plane, divides body into superior and inferior parts • Plane-imaginary line that a section is made through
Body Cavities Dorsal Ventral • Cranial Cavity • Spinal Cavity • Thoracic cavity- seperated from the rest by diaphragm • Abdominopelvic- can be further divided into abdominal cavity and pelvic cavity • Abdomial cavity can be divided into nine more regions: • 1. Umbilical region- center rmost • 2. epigastric region- superior to umbilical region • 3. Hypogastric region- inferior to umbilical region • 4. Right and Left Iliac/inguinal regions-lateral to hypogastric region • 5. Right and left lumbar regions- lateral to umbillical region • 6. Right and left hypochondriac region- lateral to epigastric region