Which muscle acts to close the eye in an exaggerated blink?
A) nasalis muscle
B) corrugators supercilii
C) levator palpebrae superioris
D) orbicularis oculi
D
Explanation:
A) The nasalis muscle is associated with the nose.
B) The corrugators supercilii acts to pull the skin inferiorly and wrinkles the forehead into a frown.
C) The levator palpebrae superioris elevates the upper eyelid.
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Answer the following statements true (T) or false (F)
1. A buoyant force is always directed vertically upward. 2. If weight is equal to buoyant force, a body will sink. 3. It is harder to float in salt water than fresh water. 4. Cyclists drafting will minimize form drag. 5. The Bernoulli Principle explains the inverse relationship between velocity and pressure.
Copper Conduit, Inc., and Dependable Electric Company sign an agreement that provides for the payment of "$1,000 by whichever party commits a material breach of the contract that creates damages difficult to esti¬mate but approximately $1,000." This is
a. a liquidated damages clause. b. a mitigation-of-damages clause. c. a waiver-of-breach clause. d. a penalty clause.
The main bronchi enter the lungs at an area called the ________
A) hilum of the lung B) pleural connection C) cardiac notch of the lung D) pulmonary indentation
What is a power stroke?
A. The grabbing hold of the actin active sites by myosin B. The binding of ATP to myosin C. Myosin pulling on actin to draw Z-lines toward the center, shortening the sarcomere D. The electrical impulse that travels down the nerve cell to stimulate the muscle cell