Which of the following illustrates a positive feedback mechanism?
A) Body temperature control
B) Control of blood sugar
C) Maintaining blood pressure
D) Uterine contractions during childbirth
D
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Dogs are herbivores
Indicate whether the statement is true or false
During the surgical process known as ________________________________________, a joint is punctured to remove fluid for analysis
Fill in the blank(s) with correct word
Which of the following is NOT a true statement about the conduction of action potentials in axons?
A. The inward Na+ current of an AP generates an AP in an adjacent portion of the axon. B. All APs in a given axon are identical in magnitude and duration. C. APs can be conducted in only one direction. D. The velocity of AP conduction is positively correlated with axon diameter. E. The frequency of APs is limited by the length of the refractory period.
All of the following are characteristics of the pituitary gland except
A. rests in the sphenoid bone. B. secretes several major hormones. C. influences the secretion of other endocrine glands. D. is regulated by the hypothalamus. E. located superior to the hypothalamus.