Question

) During a stroke, a blood clot in a blood vessel of the brain, brain tissue may die causing loss of function for certain muscles. What motions would be impaired if the following muscles lost function?

A) Buccinator:

B) Orbicularis oculi:

C) Zygomaticus group:

D) Masseter:

E) Left side of latissimus dorsi

F) Left deltoid:

Answer 1

Answer -

A) Buccinator- This is the facial muscle responsible for the basic motions like chewing, smiling. If this muscle gets impaired then these functions become difficult or even impossible.

B) Orbicularis oculi - this is the muscle present under the skin, responsible for the closing of the eyelids. Its impairment will result in difficulting in closing the eyelids which makes the eye dry.

C) Zygomaticus group- It is also the facial muscle responsible for the smile. Its impairment get difficulty in smiling.

D) Masseter- This is the muscle responsible for the chewing movement. Its impairment would result in trismus(reduction in the opening of jaws), protrusions or bruxism (clenching of teeth)

E) Left side of Latissimus dorsi- It is the muscle present in the back, its impairment would lead to lower back pain or shoulder pain.

F) Left deltoid- Muscle present at the shoulder, impairment lead to shoulder pain or can affect its movement.

Thank you