Which of the following disorders is most deadly?
A. Psoriasis
B. Squamous cell carcinoma
C. Basal cell carcinoma
D. Melanoma
E. Acne
D. Melanoma
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The axons of the ganglion neurons of the retina terminate in the
a) optic disk. b) optic chiasm. c) visual cortex of cerebrum. d) lateral geniculate nucleus of the thalamus. e) primary somatosensory area of cerebral cortex.
Which of the following is incorrect pertaining to aspiration of a foreign body?
A) Contact with the mucosa of the vestibule of the larynx will induce laryngeal musculature spasm. B) Contact with the mucosa of the vestibule of the larynx will cause violent coughing. C) A Valsalva maneuver may be used to dislodge the foreign body. D) In extreme cases a needle cricothyrotomy permits rapid entry of air into the trachea. E) Death will occur in approximately five minutes if the airway is fully obstructed.
Which of the following is NOT an effect of gastrin?
A. Stimulates chief cells to secrete pepsinogen B. Stimulates parietal cells to secrete HCl C. Maintains structure of gastric mucosa D. Stimulates secretion of pancreatic juice enzymes
The speed of muscle contraction is ________ related to load
A) indirectly B) not C) directly D) inversely