Which of the following is not a function of synovial joint:
A: provide lubrication in the joint and reduce friction between articular surfaces
B: act as a medium for the diffusion of oxygen and nutrients
C: act as a medium for the diffusion of metabolic wastes such as CO2
D: maintain sterile environment within the joint cavity
E: shock absorption
D: maintain sterile environment within the joint cavity
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In most vessels, epinephrine and norepinephrine cause ______ but in skeletal and cardiac muscle, these hormones cause ____________.
A. vasoconstriction; vasodilatation B. vasodilatation; vasoconstriction C. increases to blood flow; decreases to blood flow D. increases in oxygen concentration; decreases in oxygen concentration E. both C and B
A 26-year-old patient is admitted to a local hospital with a retroperitoneal infection. Which of the following arteries is most likely to be infected?
(A) Left gastric artery (B) Proper hepatic artery (C) Middle colic artery (D) Sigmoid arteries (E) Dorsal pancreatic artery
Pulmonary fibrosis may be caused by ________.
A. increased mucus production B. smoking C. allergic reactions D. breathing in coal dust
During exercise
A. cortisol and growth hormone secretion are decreased. B. epinephrine stimulates glucagon secretion and inhibits skeletal muscle uptake of glucose. C. epinephrine and glucagon stimulate glycogenolysis in liver cells. D. blood glucose levels fall dramatically. E. decreased blood glucose and increased epinephrine stimulate insulin secretion.