What is the only known factor that increases thyrotropin-releasing hormone (and, accordingly, TSH and thyroid hormone secretion)?
a. exposure to cold in adults
b. exposure to cold in newborn infants
c. extreme emotional stress
d. starvation
e. physical trauma
b
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Which of the following bones is not part of the orbit of the skull?
A. Ethmoid B. Frontal C. Sphenoid D. Vomer
A single nucleotide polymorphism is a very rare genetic variant that affects health
Indicate whether the statement is true or false
The bending movements of cilia and flagella
a. are associated with microtubules and kinesin b. involve the alternate assembly and disassembly of actin filaments c. are produced when dynein motors pull adjacent microtubule doublets past each other d. involves dynein action on microfilaments e. involves myosin action on intermediate filaments
Active transport carriers are also called ________.
A. receptors B. vesicles C. channels D. pumps