Exam 6: Bones and Skeletal Tissue

Compact bone is replaced more often than spongy bone.

The structural unit of spongy is called ________.

Match the following: A) Coxal bone B) Vertebrae C) Femur D) Occipital bone -Ramus

Which hormone increases osteoclast activity to release more calcium ions into the bloodstream?

Johnny fractured the lower third of his right tibia in a skiing accident. The soft tissues in the area were severely damaged and their surgical removal was necessary. After prolonged immobilization, it was found that Johnny was healing very poorly. The explanation offered by the orthopedic surgeon was that vascularization of the fracture site was still inadequate and good healing was absolutely dependent upon an adequate blood supply. Describe how a long bone receives its blood supply and trace the path of nutrient delivery to the osteocytes.

The trabeculae of spongy bone are oriented toward lines of stress.

Match the following: A) Greenstick B) Spiral C) Comminuted -Common sports fracture resulting from a twisting force.

Growth of bones is controlled by a symphony of hormones. Which hormone is of greatest importance for bone growth during infancy and childhood?

Why are the bones of young children much more flexible than those of the elderly?

Each consecutive bone lamella has collagen fibers that wrap in alternating directions.

What is a disease of the bone in which bone reabsorption outpaces bone deposit, leaving the person with thin and often very fragile bones?

Explain why swimming is not generally recommended as an exercise to prevent osteoporosis.

If your doctor notices a marked decrease in calcium ion levels in your blood, what gland might he suspect is not functioning properly and why?

Closure of the epiphyseal plate stops all bone growth.

Match the following: A) Coxal bone B) Vertebrae C) Femur D) Occipital bone -Foramen

The periosteum is secured to the underlying bone by dense connective tissue called ________.

Figure 6.1 Using Figure 6.1, match the following bone types with the numbered structure: -Bone 3.

Wolff's law is concerned with ________.

The term diploë refers to the ________.

What can a deficiency of growth hormone during bone formation cause?