Elderly persons may become less able to maintain stable body temperature because
A) their sebaceous glands become overactive.
B) the skin becomes too oily.
C) the number of sweat glands diminishes.
D) they sweat excessively.
C
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The vessel that receives most of the blood from organs inferior to the diaphragm is the
A) internal iliac vein. B) external iliac vein. C) superior vena cava. D) inferior vena cava. E) common iliac vein.
What bone-associated structure in panel C is indicated by the arrow?
osteon epiphyseal plate periosteum trabeculae
As stress levels rise in animals, activity levels of the sympathetic nervous system ________________________________________
Fill in the blank(s) with correct word
Neuron one stimulates neuron two. Neuron two stimulates an interneuron that re-stimulates neuron one and so on. What type of neuronal circuit is involved?
A) convergent pathway B) divergent pathway C) reverberating circuit D) parallel after-discharge circuit