Chapter 2, Problem 1.2CS

A mother drops off her 15-year-old boy at soccer practice. He plays for a traveling team, and she is headed to the grocery store to do some shopping while he is occupied. While at the store, she receives a telephone call from the coach, telling her that her son was kicked just below the knee, causing him to fall to the ground. He was wearing his shin guards but complains that it hurts too much to walk. His mother turns around and heads back to the soccer field. When she arrives, her son is sitting on the bench with ice on his leg. The coach and a teammate help her get him into the car, and she drives him to the emergency department. An x-ray image shows a fracture near the knee with subluxation. Additionally, the boy has suffered a complete separation of a ligament from its bony attachment. This injury is known as: 1. Lateral epicondylopathy 2. Crepitus 3. Avulsion 4. Malunion

What are the physiological Advantages in sport due to using prosthetics. What are the physiological consequences of using prosthetics? Give an example of a Professional Athlete that used prosthetics (Armstrong does not count).

Place the events at the neuromuscular junction in the order in which they occur: 1. release of acetylcholine (ACh) 2. activation of ACH receptors on the motor endplate 3. termination of the ACh activity by acetylcholinesterase 4. arrival of an action potential at the synaptic end bulb 5. diffusion of ACh across the synaptic cleft 6. opening of NA* channels in the motor endplate 7. production of a muscle fiber action potential O 4,1,2,5,6,7,3 4,1,5,6,2,7,3 4,1,5,2,7,6,3 4,1,5,2,6,7,3

A physically active 13-year-old boy is complaining of pain at the posterior heel below the attachment of the achilles tendon. What are the possible reasons for his pain and what is the most likely cause? Explain your reasoning. What is the anatomical significance of the location of his pain? Does his age make a difference in how he should be managed? Are there any risks in ignoring the problem? Are there other locations in the body in which similar conditions occur?

Explain in detail how the bends caused Mike’s paralysis.

Describe all of the events that occur from the time the patellar tendon is struck with a mallet to the time the leg kicks.

How do you determine whether a loop pattern is a radial loop or an ulnar loop?

Jake has been recently administered medication through an injection in his right buttock. Now he is not being to dorsiflex his right foot. His doctor suspects that he has footdrop. What could have happened?

1) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to (1) block the release of Ca2+ ions from the sarcoplasmic reticulum, (2) inhibit the pivoting ability of the myosin heads of the thick filaments, and (3) block the production of ATP by the mitochondria in skeletal muscles. By using this drug, contraction of certain skeletal muscle fibers is reduced, which keeps those muscles from producing spasms. In the above scenario, Fremtol’s effect of blocking the pivoting ability of the myosin heads of the thick filaments would have which of the following consequences? a. decreased release of acetylcholine at the neuromuscular junction b. inhibition of the power stroke c. reduced production of myoglobin d. All of the above e. None of the above 2) Paula is a scientist who is developing a drug called Fremtol that will be used to treat muscle spasms. This drug acts on specific skeletal muscles to…