Epithelium that is primarily secretory in function would most likely be
A. keratinized columnar.
B. stratified squamous.
C. simple cuboidal.
D. simple squamous.
E. transitional.
C
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__________ tissue is excitable and specialized for rapid communication by means of electrical and chemical signals.
Fill in the blank(s) with the appropriate word(s).
Which of the following is true regarding endocrine glands?
A. They secrete substances that do not alter the metabolism of their target cells, but have extracellular effects. B. They release their secretions into the blood. C. They secrete their products by way of ducts. D. They have an unusually low density of blood capillaries. E. Their secretions may be released onto the body surface.
Which of the following statements is true?
A. Increased parasympathetic activity is consistent with increased physical activity. B. Structures receiving both dual autonomic innervation are regulated equally by both divisions. C. There is dual innervation of all organs. D. The sympathetic division diverges more than the parasympathetic division. E. One division of the ANS is always stimulatory, and the other is always inhibitory.
Which of the following would not be a constituent of a plasma membrane?
A) glycolipids B) messenger RNA C) glycoproteins D) phospholipids