Which of the following fractures are associated with defensive wounds? - Parry fracture of the ulna - Colles fracture of the radius - Ring fractures of the skull - LeFort fractures of the skull 2. Which of the following wounds found on the skeletal remains of Richard III of England are consistent with historical accounts of "humiliation wounds"? - Sharp force trauma wound to the posterior part of the pelvis - Large, sharp force trauma wound on the occipital portion of the skull - Blunt force trauma fractures to the face - Small, compression fracture on the parietal area of the skull 3. Which of the following is an example of a nonfusion anomaly in a cranial suture? - Cleft palate - Spina bifida - Metopism - Kyphosis 4. Which of the following are characteristics of osteoarthritis? - Caused by gene abnormality - Common on bone shafts - More common in women than men - Results in eburnation and osteophytes 5. What does it mean for a forensic anthropologist to report that a wound is "consistent with a cause of death"? - That a particular wound caused a person to stop breathing and the heart to stop beating. - That while it cannot be known for sure if a wound caused death, it could have. - That a person died as a result of a homicide. - That a person died in a violent way.
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Multiple Choice (choose the one best response) 1. The inner lining of the medullary cavity is a. compact bone b. called the endosteum c. called the periosteum d. a and b are correct Which of these tissues is present in a typical long bone? blood tissue cancellous bone compact bone dense fibrous tissue hyaline cartilage all of the above In the coloring figure of the long bone, the epiphyseal plate is shown. What Is the reason for its presence? It is scar tissue from a previous fracture. It is an area of growth between the epiphysis and diaphysis during bone development It is callous tissue from overuse of the bone. It is the site of a current fracture The human skeleton functions to produce blood tissue store fat and minerals protect vital organs allow movement of the body provide a supporting framework f. all of the above Your physician has just informed you that you have 32 bones in your skull. This means you have the standard number of skull bones you have some sesamoid bones in your skull you have some sutural bones in your skull you are missing some skull bones The same physician tells you that all of your knee ligaments have been severed: This means that your leg bones are not being held together very well your leg muscles have become separated from the bone your patella (kneecap) is fractured your femur (thigh bone) is fractured
Madhur L.
Fill in the sentences describing the parts of the humerus with the appropriate feature. Then place the structures in order from proximal to distal. PreLab 12: Pectoral Girdle and Superior Appendages 1. Surgical neck 2. Anatomical neck 3. Trochlea 4. Capitulum 5. Lesser tubercle 6. Deltoid tuberosity 7. Olecranon fossa 8. Coronoid fossa 9. Greater tubercle 10. Radial groove A dome-shaped surface that articulates with the head of the radius. Roughened area on the mid-humeral shaft that is the site of a muscle attachment. Anterior depression that provides a space for the ulna when the forearm is fully flexed. Proximal portion of the humeral shaft that is a common site of fractures. Prominent lateral projection that provides muscle attachment for the supraspinatus.
a) What is the maximum compressive force, Fmax, that both tibias can withstand without compressive fracture? The maximum compressive stress of compact bone is 1.7x10^8 N/m^2 and the tibia has a cross-sectional area of 3 cm^2. Poor Landing Technique: If a person lands flat on both feet stiffly, without bending the knees or having the heel slightly raised, the deceleration distance, D, is approximately 1 cm. b) Determine the maximum jump height, Hmax, poor, without compressive fracture of the tibial bones. Use kinematic equation and Newton's 2nd Law to first show that the average force required to decelerate the person is Fdecel = mgH/D, where m is the mass of the person. (Mass of person is 75 kg). Good Landing Technique: By bending the knees with heels up during the landing, the deceleration distance, D, is effectively increased to approximately 0.6 m. c) Determine the maximum jump height, Hmax, good in this case. Limiting Factor (Ligaments & Tendons): The result in part (b) will prevent bone fracture. However, by bending the knees and landing on the balls of the feet, it is the ligaments (knee) and tendons (Achilles) in the legs which are more likely to be injured. These can only withstand a force of about 1/20 of the maximum compressive force on the tibia calculated in part (a). d) What is the maximum jumping height, Hmax, using good technique, which will not result in tendon, ligament, or bone injury?
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