anatomy & physiology. materials gloves, apron, goggles scissors, scalpel, forceps, probe tray...

FROG DISSECTIONAnatomy & Physiology

Materials

Gloves, Apron, Goggles Scissors, scalpel, forceps, probe Tray & grassfrog Safety Reminders:

Tie back long hair Spit gum out Never hold specimen in your hand while

cutting Always cut away from yourself

Step 1: Skin Frog

Do not cut too deep

Skin frog torso and appendages

You can leave frog skin on the head intact

Photograph and

Identify homologous skeletal muscles

HW: Print and hand label with ALL members names on it

Muscles required to identify:

Deltoid Pectoralis Triceps brachii Rectus abdominis External obliques Adductor Sartorius Gastrocnemius Gluteus

Additionally: Cut through the

ventral muscles to veiw internal viscera

Identify as many internal organs as possible

Black and white eggs in the abdominal cavity are characteristic of female frogs

In males the testes are attached to the kidneys

Reason to dissect further….

Interesting Frog Facts:

Males attract females by croaking by fresh water

During Amplexus, the male frog climbs on the females back and wraps his arms around her to stimualte her to lay eggs, he fertilizes the eggs externally

Clean UP

All frog tissues should be disposed of in large trash can

Rinse tray and tools Spray tray and tools Dry and return tray and tools to cart Spray and wipe lab table and sink

Grab review sheets (2) to complete