The region of the ampulla that contains the receptors for rotational (dynamic) equilibrium are called
A) utricles.
B) ampullary crests.
C) saccules.
D) fovea.
E) maculae.
B
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Which of the following statements concerning control of blood flow through arterioles is TRUE?
A. Beta-adrenergic receptors are more abundant on most arteriolar smooth muscle than are alpha-adrenergic receptors. B. Body-wide constriction of arterioles results in a decrease in the total peripheral resistance (TPR). C. Binding of epinephrine to alpha-adrenergic receptors causes vasodilation. D. If the arterial blood pressure to an organ suddenly decreases, arterioles in the organ will dilate in response. E. Increased stimulation of vascular smooth muscle by the parasympathetic nervous system causes increased vasoconstriction.
Which is not true regarding ligaments?
A. Intracapsular ligaments are within the articular capsule. B. Ligaments are composed of dense regular connective tissue. C. Extrinsic ligaments are physically separate from the articular capsule. D. Intrinsic ligaments are thickenings of the articular cartilage. E. Extracapsular ligaments are outside the articular capsule.
What structures are used by both the respiratory and digestive systems?
A. Oropharynx and laryngopharynx B. Laryngopharynx and larynx C. Nasal cavity and nasopharynx D. Paranasal sinuses E. Laryngopharynx and esophagus
The fibrous layer of the eye
A) consists of the sclera and the cornea. B) contains the intrinsic eye muscles. C) regulates the amount of light entering the eye. D) consists of the iris, ciliary body, and choroid. E) consists of the retina.