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Intro to Frog Dissection
Miss Colabelli
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Directional Terms Anterior (ventral) = front Posterior (dorsal) = back
Superior (cranial) = Upper Inferior (caudal) = Lower Medial = midline Medial
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Directional Terms Lateral = away from midline
Intermediate = between medial and lateral Proximal = point of origin Distal = away from origin Superficial = external/surface Deep = internal/beneath surface
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Regional Terms Cephalic = head Frontal = forehead Orbital = eye
Nasal = nose Buccal = Cheek Occipital = base of skull
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Regional Terms Thoracic = chest cavity Sternal = breast bone
Axillary = armpit Brachial = arm
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Regional Terms Carpal = wrist Digital = fingers/toes
Vertebral = spinal
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Body Planes Midsagittal – separates into equal right and left portions
Midline of the body Parasigittal – separates into unequal right and left portions
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Body Planes Frontal – parallel to axis that separates body into anterior and posterior Transverse – Separates the body into superior and inferior portions Oblique – separates the body into diagonal portions
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Body Cavities Dorsal cavity – contains central nervous system
Cranial cavity – brain and spinal cord Ventral cavity – contains respiratory, cardiac, digestive, urinary, and reproductive organs Thoracic cavity – within rib cage, floor is diaphragm (contains lungs and heart) Abdominopelvic cavity – occupies much of lower front torso (contains stomach, liver, spleen, kidneys, most of intestine, urinary bladder, most of reproductive system)
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Lab Safety During dissection: WEAR GOGGLES AND GLOVES AT ALL TIMES!!
Wear closed toes shoes Hair tied back Clothing is not hanging or loose (bring a t-shirt to throw over clothes) To maintain a clean station, have one person in group be the reader and recorder while the other dissects the frog
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Cleaning Up Make sure your lab area is cleaned before leaving class
To maintain freshness of your frog, wet a paper towel and wrap the frog in it, place the wrapped frog into a zip lock bag for the next day Rinse off all dissecting tools and DRY THEM Put all tools away and then remove gloves and goggles Wash your hands!
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