Glaucoma is a state of elevated pressure within the eye that occurs when the ________ is obstructed so the aqueous humor is not reabsorbed as fast as it is secreted.
A. posterior chamber
B. scleral venous sinus
C. lacrimal punctum
D. anterior chamber
E. tarsal gland opening
Answer: B
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The superficial layer of the urogenital triangle contains three muscles. Select the exception
A. Puborectalis B. Bulbospongiosus C. Ischiocavernosus D. Superficial transverse perineal
A researcher discovered a sensory receptor that detects decreasing oxygen concentrations in the blood
According to the principles of negative feedback, it is likely that stimulation of this sensory receptor will produce which of the following types of responses? A. a decrease in heart rate B. an increase in the respiratory rate C. an increase in physical activity D. unconsciousness E. both a decrease in heart rate and an increase in the respiratory rate
Carbon is very versatile in forming bonds with other atoms because it has ________ valence electrons
A) two B) eight C) four D) six
What structural component of cardiac muscle cells allows for electrical current to flow from cell to cell?
A. Tight junctions B. Adhesion junction C. Gap junctions