If the set point of the hypothalamus were to suddenly rise to 40°C (as in the induction phase of a fever), what would the initial response of the body be?
A. glands release sweat
B. muscles contract to cause shivering
C. nothing
D. body temperature drops
E. blood vessels dilate
B. muscles contract to cause shivering
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The one-way flow of air along parabronchi makes what type of gas exchange mechanism possible, at least theoretically?
A) the same as that occurring in fish gills B) the same as that occurring in insect tracheae C) the same as that occurring in mammalian lungs D) the same as that occurring in echinoderm skin gills
In a Giesma-stained karyotype, each chromosome can be identified by its unique pattern of:
A. supercoils. B. spirals. C. bands. D. coloration. E. None of the answer options is correct.
What structure is surrounded by the vasa recta in juxtamedullary nephrons?
a. proximal convoluted tubule b. distal convoluted tubule c. loop of Henle d. Bowman’s capsule
The tube feet of a sea star
a. bear tiny toes. b. are located only at the tips of the arms. c. function in movement. d. protect the organism from predatory fish.