Facilitation Notes Animal System Station Lab

Transcription

1 Facilitation Notes Animal Station Lab 1. Facilitator Set-Up for Animal Lab 2. Print off four copies of each station card in color per lab table. Laminate each card or place in pocket protector. Provide pens at each station. 3. Print off four copies of graphic organizer per station. To provide the differentiation experience: Station 1 provide participants with only the graphic organizer and a transparency pen. Station 2 provide participants with the graphic organizer and names of systems (Do not include all systems) Station 3 provide participants with the graphic organizer and pictures of systems (Do not include all systems) Station 4 provide participants with a body system overview sheet. Station 5 allow participants to choose from the four methods of differentiation above. Students will need a copy of the student sheet to fill in.

2 Opossums Play Dead When opossums are startled or feel threatened they often play dead which is also known as playing possum. This behavioral response is known as thanatosis. To play dead, the opossums heart rate decreases, it lies on its side, and its body stiffens as muscles contract. The possum drools and does not respond to external stimuli. Many possums release feces or urine. Scientists believe that this behavior is designed to deter predators including wolves. Photo courtesy of Tony Alter N00/ Scan the QR code for video

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4 Pistol Shrimp Stuns Prey The pistol shrimp has an adaptation that allows it to defend its territory and stun or kill prey. The adaptation is a front claw that functions like a water gun. When prey approach, the shrimp contracts muscles which pull against the exoskeleton. The muscle contraction results in the claw closing quickly. As a result, water is displaced rapidly producing the a stream of water that stuns and sometimes kills the prey. The closing of the claw also produces a snapping sound that may startle predators. Photo courtesy of noaa rations/04etta/background/decapods /media/synalpheus.html Scan the QR code for video

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6 Digestive Nervous Digestive Nervous Digestive Nervous Digestive Nervous Circulatory Muscular Circulatory Muscular Circulatory Muscular Circulatory Muscular Excretory Endocrine Excretory Endocrine Excretory Endocrine Excretory Endocrine

7 Blood Shoots From Lizard s Eye Horned lizards have a defense mechanism that includes shooting blood from their eyes. The major veins surrounding the eye of the lizard are controlled by muscles. When the lizard contracts these muscles, blood flow is increased to the head. As a result, a specialized membrane similar to an eyelid fills with blood. Muscles in the eyelid and eye contract to shoot blood when predators approach. Scientists believe the blood deters predators. Photo courtesy of Paul Asman and Jill Lenoble Scan the QR code for video

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10 Baby Koala Eats Feces Baby koalas are mammals and begin their life drinking their mother s milk. The production of milk is controlled by a hormone called prolactin. The young koala must transition from milk to the eucalyptus leaf which is the primary diet of the koala. Surprisingly, eucalyptus leaves are indigestible to young koalas. To prepare to digest eucalyptus, juvenile koalas feed on pap. Pap is a specialized form of feces produced by the mother. Pap allows the mother koala to pass microorganisms which inhabit the intestine to her offspring. As a result, the juvenile koala acquires the bacteria that necessary to digest eucalyptus leaves. Photo courtesy of Eva Rinaldi otography/ Scan the QR code for video

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12 Body Nervous Circulatory Excretory Digestive Reproductive Endocrine Function Senses stimuli; coordinates response to stimuli Transports gases, nutrients, waste, and hormones to and from the body cells. Filters the blood to remove waste. Breaks down food into smaller molecules that can be absorbed and distributed to cells. Produces eggs and sperm; develops and nurtures offspring. Produces hormones; regulates growth, metabolism, and development. Body Nervous Circulatory Excretory Digestive Reproductive Endocrine Function Senses stimuli; coordinates response to stimuli Transports gases, nutrients, waste, and hormones to and from the body cells. Filters the blood to remove waste. Breaks down food into smaller molecules that can be absorbed and distributed to cells. Produces eggs and sperm; develops and nurtures offspring. Produces hormones; regulates growth, metabolism, and development.

13 N. fowleri Brain-Eating Amoeba N. Fowler is an amoeba found in tap water, freshwater lakes, pools, or streams. When a person comes into contact with water containing these amoebas, the amoeba enters the body through the nasal passage. The amoeba travels to the brain using the olfactory nerves as a road. The amoebas use the brain as food. As a result, the most common cause of death is hemorrhaging (bleeding) in the brain and necrosis (death) of brain tissue. The symptoms include headaches, fever, nausea and vomiting. As the infection progresses it causes seizures, hallucinations, and altered mental states. This infection is so severe that infected individuals often die with in 1-2 weeks of infection. Photo of amoeba courtesy of CDC naegleria-fowleri-images.html Scan the QR code for video

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