ZOOL 403 Lecture Notes - Lecture 4: Skull, Metatheria, Viviparity
21 Jan 2020
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Amniote tetrapod (synapsid): has a synapsid temporal opening (called fenestra, adductor mandibularis muscle, pterygoideus muscle. Theria includes (both don"t lay eggs): eutherians includes, placental mammals, metatherians includes, marsupials. Anatomy of the back of the skull and middle-ear bones of synapsids: synapses have a number of bones (ossicles) to propagate sound. Mammalia- ccop hlm: calcaneal heel, cheek teeth-double rooted, three ossicle bones in middle ear, prismatic tooth enamel, hair, lower jaw-single bone (dentary, dermal bone, milk. Lizards: lizards represents general amniote condition (also seen in most non-mammalian synapsids), there is no secondary palate, no separation between nasal and oral passages. The mammalian integument: epidermis consists of, stratum corneum, stratum germinativum, dermis, subdermis, contains fat cells, glands, sebaceous gland protective oils, aprocine gland sweat (e. g. -armpit, pubic, ecrine gland sweat, arrector muscle sweat (e. g. -armpit, pubic) Mammalian heart: right atrium, left atrium, pulmonary valve, pulmonary artery, pulmonary veins, systemic aorta, aortic valve, left ventricle.
