Question 1

In a recent study reported in this chapter,Wenneberg,Gunnarsson,and Ahlstrom (2004)found that subjects with muscular dystrophy _________________.&#10;A) Showed improved functional movements during activities of daily living and instrumental activities of daily living after muscle overexertion exercises&#10;B) Needed shoulder slings to drive a powered wheelchair&#10;C) Had a decreased rate of decline with qigong used as an adjunct therapy program&#10;D) Experience maximal weakness during the first year after diagnosis

Accepted Answer

Wenneberg, Gunnarsson, and Ahlstrom (2004) found that subjects with muscular dystrophy had a decreased rate of decline when qigong was used as an adjunct therapy program. This suggests that qigong may have beneficial effects in slowing the progression of muscular dystrophy.

Question 2

An occupational therapist has received an order to evaluate Jan,a 45-year-old photographer who has been diagnosed with myasthenia gravis.In what aspect of evaluation should the therapist have advanced training to perform?

A) Dysphagia
B) Manual muscle testing
C) Home evaluation
D) Running groups
E) All of the above

A

Accepted Answer

Dysphagia, or difficulty swallowing, is a potential complication of myasthenia gravis due to muscle weakness affecting the throat. Evaluating and managing dysphagia requires specialized training beyond the general scope of occupational therapy practice, making it essential for the therapist to have advanced training in this area.

Question 3

Which of the following is a disorder of the neuromuscular junction?&#10;A) Postpolio syndrome&#10;B) Muscular dystrophy&#10;C) Guillain-Barr&#233; syndrome&#10;D) Myasthenia gravis

Accepted Answer

Myasthenia gravis is a disorder of the neuromuscular junction where the immune system attacks and damages the receptors responsible for receiving acetylcholine (a neurotransmitter) at the neuromuscular junction. This leads to muscle weakness and fatigue, typically starting with the eye and facial muscles and progressing to other muscles in the body. Postpolio syndrome, muscular dystrophy, and Guillain-Barré syndrome are all disorders of the muscles or nerves, but not specifically of the neuromuscular junction.

Question 4

The motor unit is the elementary functional unit of the peripheral nervous system.What are its four elements?&#10;A) The cell body of the motor neuron in the anterior horn of the spinal cord; the axon of the motor neuron, which travels via spinal nerves and peripheral nerves to muscle; the neuromuscular junction; and the muscle fibers innervated by the neuron&#10;B) The spinal nerve, the peripheral nerve, the neuromuscular junction, and the muscle fibers&#10;C) The cell body of the motor neuron in the posterior spinal cord, the dorsal root, the peripheral nerve, and the muscle fibers&#10;D) The synaptic junction, the anterior spinal cord, the neuromuscular junction, and the muscle fibers

Accepted Answer

The four elements of the motor unit are: the cell body of the motor neuron in the anterior horn of the spinal cord; the axon of the motor neuron, which travels via spinal nerves and peripheral nerves to muscle; the neuromuscular junction; and the muscle fibers innervated by the neuron.

Question 5

Edith's story was used as the Guillain-Barr&#233; case study in this chapter.Which of the following interventions was used with Edith?&#10;A) A wrist support while reading the newspaper&#10;B) A card holder and card shuffler to play cards independently&#10;C) Prolonged exertion during shopping&#10;D) Cardiac precautions&#10;E) All of the above

Accepted Answer

Edith was provided with a card holder and card shuffler to help her play cards independently, which is a form of adaptive equipment for function in daily living activities. The other options (A, C, and D) are either irrelevant or potentially harmful interventions.

Deck 39: Disorders of the Motor Unit