BIOL-1030 Lecture Notes - Lecture 15: Bone Marrow, Axial Skeleton, Appendicular Skeleton
16 Sep 2016
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30. 1 locomotion requires energy to overcome friction and gravity. Involves changing position of body parts relative to one another. All require energy, and rely on movement of cellular strands of protein against one another. Locomotion active travel from place to place. Requires additional energy to overcome gravity and friction. Types of locomotion: swimming, walking, running, hopping, crawling, flying. 30. 2 skeletons function in support, movement and protection. Calcium carbonate in molluscs: hard or leathery supporting elements situated among soft tissues of an animal, made of: b. i. b. ii. b. iii. Composed of bone and cartilage (connective tissues enriched in ca2+ salts) Has parts for protection of vital internal organs. Jointed and segmented to allow greater flexibility and mobility. 30. 3 vertebrate skeletons are variations of an ancient theme. Skeletons of all animal groups are constructed from modified versions of same parts. Parts of each animal skeleton are arranged in similar manner and with similar function. Homeotic genes - direct arrangement of various parts.
