Which of the following bones of the skull is considered a cranial (as opposed to a facial) bone?
A. Lacrimal
B. Nasal
C. Sphenoid
D. Zygoma
E. Mandible
Answer: C. Sphenoid
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Collateral pathways take vestibular receptor signals from the medulla to the
A) thalamus and reticular formation. B) cerebellum only. C) reticular formation and cerebellum. D) reticular formation only. E) thalamus only.
Negative feedback operates to prevent any change in the value of a controlled factor in the body
Indicate whether the statement is true or false
Which of the following most accurately describes the actions of aldosterone?
A. Aldosterone increases Na+ secretion and K+ reabsorption in the cortical collecting ducts. B. Aldosterone increases Na+ reabsorption and K+ secretion in the proximal tubule. C. Aldosterone decreases Na+ reabsorption and K+ secretion in the cortical collecting ducts. D. Aldosterone increases Na+ secretion and K+ reabsorption in the proximal tubule. E. Aldosterone increases Na+ reabsorption and K+ secretion in the cortical collecting ducts.
Rapid diffusion of oxygen and carbon dioxide through the air sacs (alveoli) of the lungs takes place through ________ epithelium
A) simple cuboidal B) simple columnar C) keratinized stratified squamous D) simple squamous E) nonkeratinized stratified squamous