Bio 240: Human Anatomy & Physiology I Lab Exam # 3 Summer 2017 Fall 2010 Bio 240
ID: 282105 • Letter: B
Question
Bio 240: Human Anatomy & Physiology I Lab Exam # 3 Summer 2017 Fall 2010 Bio 240 Dr Precious Alaw uru Laboratory Examination # 2 Human Anatomy & Physiology 24. Which of the following is true of the organic matrisx a) provides flexibility for the bone c) contains collagen fibers b) provides tensile strength for the bone d) contains osteocytes e) all of the above are true 25. Which of the following is true about the Volkmann's canals a) Volkmann's canal is found in spongy bon c) It is found in compact bone only b) It contains blood supply d) It contains nerves e) b, c and d only 26. Trace the route taken by nutrients through a compact bone, beginning from the periosteum a) Periosteum osteon central canal lamellae > lacunae osteocyte b) periosteum canaliculi central canal volkmann's canal osteocyte c) periosteum lacunae lamellac osteocyte canaliculi volkmann's canal d) periosteum osteocyte osteon -> volkmann's canal canaliculi lamellae e) none of the above 27. Which of the following are true definitions of these bony parts, meatus and trochanter a) a meatus is a part of the organic bone matrix while trochanter is a small rounded projection b) a meatus is a canal-like structure while a trochanter is an air-filled cavity c) a meatus is a canal-like structure while a trochanter is a large, irregularly shaped projection. d) all of the above e) None of the above. 28. The calcium salts found in the matrix of bones gives the bone what a) brittleness b) flexibility c) hardness d) a and bonly e) none of the above 29. Which of the following is a major component of the axial skeleton a) the skull b) the bony thorax c) the vertebrae d) All of the above e) b and c only 30. Which of the following statements is true. a) the skull protects the spinal column b) the vertebra protects the brain c) the bony thorax protects the heart& lungs d) hyoid bone is considered a part of the skull bone e) c and d only 31. Which of the following statements are true a) Sutures are immovable bony joints. b) Sutures are interlocking joints found between skull bones c) All skull bones forms suture joints except the mandible d) all of the above e) none of above 32. Which of the following is not true about sutures a) lamdoid suture connects occipital to parietal bones temporal bones d) sagittal connects both parietal bones e) squamous suture connects frontal to temporal bones b) squamous connects parietals to c) coronal connects frontal to parietal bones 33. Which of the following bones does not form the cranium vault a) parietals b) temporals c) maxilla d) occipital e) sphenoid 34. What is the orbit. c) the bony cavity of the cyeball b) refers to the cranial vault e) b and c only a) the orbicularis oculi bone d) none of the above 35. Which of the following is a function of the sinuses found in skull bonesExplanation / Answer
24) The answer is e ( all of the above).As bone matrix is made up of both organic and inorganic components.Organic components include collagen which provide tensile strength, osteocytes which promote mineralisation, proteoglycans and cytokines and growth factors.
25) The answer is e.They are the channels present in the compact or cortical bone.Their function is to connect haversian canals with periosteum.They contain blood supply and nerve supply.
26) The answer is a.
27) The answer is c.Trochanter is a large projection;example = femur.meatus is like a canal as opening of ear canal
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