Which statement is incorrect?
A. Endocrine glands lack ducts.
B. The effect of hormones is shorter than the effect of nerve impulses.
C. Steroid hormones are carried in the blood by transport proteins.
D. Hormones may have widespread, distant effects on the body.
E. A common second-messenger is cyclic AMP.
B. The effect of hormones is shorter than the effect of nerve impulses.
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The function of the tympanic membrane is to amplify sound waves on their way to the middle ear.
Answer the following statement true (T) or false (F)
Squamous cell carcinoma arises from:
A) keratinocytes in stratum basale. B) keratinocytes in stratum corneum. C) keratinocytes in stratum spinosum. D) melanocytes.
Blood loss that occurs during surgery will stimulate cells in the
A. efferent arteriole. B. wall of the right atrium. C. proprioceptors. D. juxtaglomerular apparatus. E. None of these choices is correct.
A chronic obstructive pulmonary disorder impairs the ability of the body to obtain oxygen. Eventually, if the body cannot compensate, ________ will be lost.
A. equilibrium B. metabolism C. homeostasis D. energy