AGRC1020 Lecture Notes - Lecture 12: Stifle Joint, Sacroiliac Joint, Lumbar Vertebrae
30 Jul 2018
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Document Summary
Lizards: similar other vertebrates except, no sternum. Inspiratory muscles: fibres in an oblique direction, when contracted rotate the ribs up and forwards, m internal intercostal, between each set of ribs, expiratory muscles, fibres at right angles to external intercostals, when contracted push the ribs backward. Anatomical design involves compromises between flexibility and stability: flexibility rotation and dexterity, stability joint fixation and secure contact with a surface, anatomical specialisation has evolved to facilitate different functional roles e. g. of thoracic and pelvic limbs. Avian locomotion: shape of the wings gives maximum lift, air travelling on the dorsal surface faster than ventral surface, angle of the wings determines direction. Growth patterns: all animals have a genetically controlled size, both within and between species, which they will attain if there are no constraints on their growth. This weight is referred to as their mature weight: the birth weight of an animal is related to its weight at birth.
