Structure C is the
A) synovial membrane.
B) joint capsule.
C) hyaline cartilage.
D) compact bone.
E) periosteum.
E) periosteum.
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An action potential is triggered if
A) EPSPs overpower IPSPs. B) the membrane hyperpolarizes. C) IPSPs overpower EPSPs. D) chloride channels open.
The glucose concentration in the plasma when glucose first starts to appear in the urine is about____ mg per 100 ml
a. 30 b. 60 c. 100 d. 150 e. none of the above
The type of contraction in which the muscle fibers produce increased tension but do not shorten is called
A) Tetany. B) Treppe. C) Concentric D) Isotonic. E) Isometric
Understanding the evolution of endothermy requires the resolution of a paradox: Increasing the resting metabolic rate can provide heat to raise the body temperature, but without insulation (hair or feathers) that heat is rapidly lost to the
environment. But a layer of insulation does not benefit a vertebrate unless the animal has a high metabolic rate. Discuss the evidence suggesting that Mesozoic synapsids and sauropsids had developed both high metabolic rates and insulation, and identify the puzzling gaps in the information currently available.