Sharks and rays increase their buoyancy by accumulating __________ in their livers
A) Cholesterol
B) Squalene
C) Triglycerides
D) Wax esters
Fill in the blank with the correct answer.
Answer: B
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Which accessory organ of the digestive system does not produce any enzymes or digestive secretions?
A) pancreas B) gallbladder C) liver D) salivary glands E) teeth
Why should the hypothalamus instead of the anterior pituitary be called the "master endocrine gland?"
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Tom is on a health kick and wants to make sure that he is always in balance in terms of total body water. Which of the following is important for him to keep in mind?
A. He must ingest more water than is lost in the urine. B. The water filtered into Bowman's capsule must be 100% reabsorbed. C. The amount ingested plus that metabolically produced must equal the amount of water in the urine. D. He must ingest more water than is lost by all output pathways combined. E. He must ingest less water than is lost in the urine.
Which of the following statements concerning liver sinusoids is true?
(a) they are continuous with bile canaliculi (b) they are surrounded by a well developed basal lamina (c) they are lined by continuous endothelial cells (d) they deliver blood to the central vein (e) they deliver blood to the portal vein