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Lab Quiz #2 Information – Biology 212 This lab quiz will primarily focus on only visual recognition of the structures from Lab 5: Digestion and Lab 6: Circulation. Details noted below. It may also contain anything that was covered for Lab 3/4 Animal Diversity Lab (see study information for Lab Quiz #1). Note that for the Lab Practicum (on March 6) you will also need to know the functions of the structures. Types of questions: You will be shown a picture of an organism or a slide and asked: • What is the name of this structure? • For slides, what is the specimen name? (species or genera as listed) • What phylum (or other taxa as specified) does this specimen belong to? Structures to be able to identify Microscope Slides o Grantia (c.s. and l.s.)—Identify the ostia (pores), spongocoel o Hydra (c.s.)—Identify gastrodermis, epidermis, gastrovascular cavity o Planaria (c.s. and l.s.)—Identify the gastrovascular cavity intestine; pharynx, pharyngeal cavity o Earthworm (c.s.)—Identify the intestine, typhlosole (functions to increase surface area of the intestine), and the coelom (look for mesodermal layers), epidermis o Human Artery-Vein - Locate the artery (thick walled very circular) and the vein (thinner walled, not circular) o Amphibian Heart - Amphibians have a 3-chambered heart. Identify the large single ventricle and the two atria (one will be noticeably larger than the other due to the angle of the cut). Are any blood vessels visible? Models: o Earthworm model: Identify mouth, pharynx, esophagus, crop, gizzard, and intestine, 5 aortic arches (hearts), dorsal blood vessel and ventral blood vessel. o Mussel Heart (plastimount) Locate the heart, which pumps the circulatory fluid into the body cavity to bathe the organs directly. Also note the gills, mouth, foot & mantle. Rat External Anatomy: mouth, incisors, anus Internal Anatomy: coelom, liver, esophagus, stomach, spleen (not-digestive), pancreas, small intestine (specific area of duodenum as well as entire small intestine), mesentery, caecum, large intestine, rectum Heart, arteries and veins: right and left atria, right and left ventricles, renal artery and renal vein Pigeon External anatomy: beak, vent Internal Anatomy: esophagus, crop, stomach, gizzard, small intestine, large intestine, cecum, rectum No circulatory system for pigeon on Lab Quiz #2 Mammlian Heart External Structures: pericardium, R & L atria, R & L ventricles, aorta, pulmonary artery, vena cava, pulmonary veins, coronary artery Internal Structures: R & L atria, R & L ventricles, pulmonary semilunar valve, aortic semilunar valve, tricuspid valve (right atrioventricular valve), chordae tendineae, bicuspid or mitral valve (left atrioventricular valve)