What kind of heat loss occurs continually from the linings of the respiratory airways and from the surface of the skin?
a. radiation
b. conduction
c. evaporation
d. dissipation
e. convection
c
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Extension decreases the angle between two bones.
Answer the following statement true (T) or false (F)
The symptoms of ____ are caused by progressive demyelination of nerve cells in the brain and spinal cord
a. multiple sclerosis b. epilepsy c. encephalitis d. meningitis
The femoral vein becomes the external iliac vein when it
A. merges with the popliteal vein. B. merges with the internal iliac vein. C. passes above the inguinal ligament. D. passes above the tenth thoracic vertebra.
An adipose (fat) cell responds to the presence of the hormone epinephrine by increasing cytosolic cyclic AMP production, which leads to the catabolism of both glycogen and fat. What is the most likely explanation for this phenomenon?
A. Cyclic AMP-dependent protein kinase activates two kinds of enzymes. B. Cyclic AMP directly activates enzymes that catabolize glycogen and fat. C. Epinephrine is binding to two types of receptors in the plasma membrane. D. The activated receptor complex stimulates production of two different second messengers.