Which of the following occurs during endochondral bone formation?
Chondrocytes hypertrophy and die
A 12 year old girl fell off her bicycle and broker her femur. Radiological examination showed a generalized reduction in bone density, suggesting to the pediatrician that the child might have a nutritional deficiency. Which of the following should be supplemented in this child's diet?
The child's diet may be lacking in calcium. Because the serum calcium level must be maintained at a relatively constant value, it is removed from the _____ if the dietary intake is insufficient, resulting in bones that are more fragile than normal.
A patient has autoimmune disease myasthenia gravis. This condition is due to the patient's inability to:
bind acetylcholine by acetylcholine receptors
In early May, a pathologist is called to the crime in Baltimore, Maryland to examine a cadaver. She notes that the body is in maximal rigor mortis and determines that the person has been dead for:
_______________ bind to acetylcholine receptors, which disables them from binding acetylcholine.