Exam 9: Orthopedics-Muscular System

When your outstretched arm turns the palm down,this action is known as ________.

A nerve cell releases the neurotransmitter ________,which changes the permeability of the muscle fiber and allows sodium to flow into it.

Which condition is known as housemaid's knee?

The gastrocnemius muscle ________.

The combining form contus/o- means "________."

Explain how a muscle fiber contracts.

Incoordination of the muscles during movement is known as ________.

A muscle that produces extension is part of a muscle pair in which the other muscle produces ________.

The size and strength of muscles decrease in older patients.

Skeletal muscles are ________,showing bands of color when examined under a microscope.

There are approximately how many skeletal muscles in the body?

The combining form ________ means "breastbone;sternum."

The trapezius muscle produces all of the following motions EXCEPT ________.

The suffix -oma means ________.

The orbicularis oculi muscle is a muscle of the head and neck that closes the eyelids.

What is an electromyography?

The combining form ________ means "movement."

Each muscle ________ is a bundle of individual muscle fibers.

Which is the characteristic symptom of myasthenia gravis?

Skeletal muscles are voluntary muscles.