Intro to Frog Dissection
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Transcript of Intro to Frog Dissection
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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!