Thermoreceptors consist of ____
a. sensory receptors enclosing an afferent neuron
b. sensory receptors formed by a cell that synapses with an afferent neuron
c. free nerve endings of afferent neurons
d. stereocilia
e. statocysts
ANSWER: c
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The first part of the renal tubule is called the _____ and is specialized for _____
A. proximal convoluted tubule; reabsorption of electrolytes and other nutrients. B. loop of Henle; creation of a concentration gradient in the interstitial fluid C. distal convoluted tubule; secretion of additional wastes into the urine D. distal convoluted tubule; reabsorption of water E. collecting duct; reabsorption of water
WASH initiatives are public health initiatives that address WAter, Sanitation, and Hygiene. Which of the following diseases would not be expected to show a decrease in prevalence following a successful WASH campaign?
A. Clostridium difficile infection B. Entamoeba infection C. Schistosomiasis D. Shigella infection E. Ascaris lumbricoides infection
Hormonal messages can be generally described as:
A) digital B) all-or-none C) analog D) high-threshold responses
Which type of molecule reinforces the shells of forams?
a. calcium carbonate b. hydrogen sulfide c. copper sulfate d. silica