The ciliary muscle contracts to
A) control the amount of light reaching the retina.
B) adjust the shape of the lens for distant vision.
C) adjust the shape of the lens for close vision.
D) control the production of aqueous humor.
E) adjust the shape of the cornea and vitreous.
Answer: C
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You are carrying a box when your friend suddenly places another heavy box on top of it. Your muscles respond by immediately ________ because ________ sense the rapid muscle lengthening and cause a reflex response.
A. completely relaxing; Golgi tendon organs B. relaxing; muscle spindles C. contracting; Golgi tendon organs D. contracting; muscle spindles
Inflammation of the outer ear is called:
A) otitis B) otitis externa C) otitis media D) otitis interna
What is the common insertion of all 4 heads of the triceps brachii muscle?
What will be an ideal response?
If pure water and a solution containing a nonpenetrating solute are separated by a membrane that is permeable only to water, what would occur?
A. Water will diffuse by osmosis until all of the water is on the same side as the solute. B. No movement will occur between the compartments. C. Water will diffuse by osmosis toward the side with the solute, until stopped by opposing hydrostatic pressure. D. Water will diffuse by osmosis away from the side with the solute, until stopped by hydrostatic pressure. E. Water will diffuse by osmosis until the water concentrations in the two compartments become equal.