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Section 10 (More prefixes)

Brev-: short Counter-: against Uni-: one Mono-: one Bi-: two Bin-: two Di-: two Ter-: three Tri-: three Quadra-: four Tetra-: four Acro-: extremity, limbs Oligo-: few Aud-: ear, hear. Blasto-: early, embroyonic Adeno-: gland Angio-: vessel Arthro-: joint Bucc/o-: cheek

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Section 10 (More prefixes)

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  1. Brev-: short Counter-: against Uni-: one Mono-: one Bi-: two Bin-: two Di-: two Ter-: three Tri-: three Quadra-: four Tetra-: four Acro-: extremity, limbs Oligo-: few Aud-: ear, hear Blasto-: early, embroyonic Adeno-: gland Angio-: vessel Arthro-: joint Bucc/o-: cheek Cardi/o-: heart Corp-: body Chondr/o-: cartilage Cephal/o: head Cyst/o-: bladder Cyt/o: cell Dent/o-: tooth Dermat/o-: skin Duoden/o-: duodenum Section 10 (More prefixes)

  2. Sheep heart dissection Please refer to the large Lab Manual for directions and instructions (exercise 30 in many books)

  3. Your goal for today • Determine how blood moves through the heart • Identify all the valves • Understand the difference between right and left sides • Begin the dissection which you will finish up tomorrow

  4. Heart Dissection Instructions • Always wear apron and safety glasses (back of the room) • Please refer to the large Lab Manual for directions and instructions (exercise 30; page 306-307) • Obtain preserved heart, dissecting tray, instruments, and gloves • Please follow directions of the lab sheet and refer to the lab manual if you have any questions • Spend significant time studying the outside of your heart • Examine valves and pumping before cutting

  5. Time to cut • The first incision is along the right ventricle and atrium, allowing us to see inside the right side of the heart. • The right ventricle can be identified by squeezing the heart, since the myocardium on the right side is much less rigid than that of the left ventricle. • This incision allows us to see the tricuspid valve and the right ventricular outflow tract which includes the pulmonary valve.

  6. Clean up • Rinse your heart and place it in a gallon size bag with your names on it • Rinse all tools and dissection pan • Pat everything dry • Clean off your lab table and push in lab stools Failure to clean up will land you in detention, and you will clean up for 30 minutes after school.

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