which muscle is a sphincter of the eyelid that encircles and closes the eye?

a) levator anguli oris
b) levator palpebrae superioris
c) orbicularis oculi
d) orbicularis oris


c) orbicularis oculi

Anatomy & Physiology

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A muscle that contracts involuntarily, suddenly, and violently for a prolonged period of time is said to have ________.

A. ataxia B. fibromyalgia C. a cramp D. a strain

Anatomy & Physiology

What law states that the pressure of a given quantity of gas is inversely proportional to its volume?

A. Charles' Law B. Dalton's Law C. Boyle's Law D. Henry's Law

Anatomy & Physiology

The dens is a process projecting from the ________

A) sacrum B) coccyx C) intervertebral discs D) atlas E) axis

Anatomy & Physiology

Which of the following types of proteins is present at the lowest percentage of the blood component labeled I in the figure?

a) globulin b) albumin c) fibrinogen d) all of the protein listed are found in equal percentages e) none of proteins listed are found in component I

Anatomy & Physiology