BMAT Biology Practice Questions and Answers

Endoskeleton Internal Skeleton Axial skeleton Skull, vertebral column, rib cage Appendicular skeleton Limbs, Pelvic/pectoral girdles chondrin Makes up cartilage chondrocytes cells that secrete chondrin compact bone Dense Bone, no visible cavities cancellous Spongy Bone trabeculae "Spicules" in spongy bone yellow marrow Inactive marrow, filled with adipose tissue red marrow produces red blood cells spongy bone location of marrow skeletal muscle controlled by somatic nervous system, striated skeletal muscle cells Multi-nucleated, created by fusion of several mono nucleate cells myofibrils filaments in muscle sarcomeres contractile units in muscle myoglobin protein similar to haemoglobin Red fibres (in muscle) high myoglobin, many mitochondria. Aerobic. Slow-twitch. Long lasting White fibres (in muscle) low myoglobin, few mitochondria, anaerobic, fast-twich