Match the chemical signal with the appropriate description.A. Chemicals produced by neurons that function as hormonesB. Chemicals that act locally on nearby cellsC. Chemical secreted by presynaptic terminalD. Influences same cell type from which it is secretedE. Chemical secreted into blood by specialized cells; travels some distance to target tissuesParacrine
Fill in the blank(s) with the appropriate word(s).
Answer: B
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A single genetic mutation will change a protein at what level of structure?
A. Secondary B. Quaternary C. Tertiary D. Primary E. A single genetic mutation could change all of these
Match the vessel with the appropriate description.A. Supplies blood to the frontal lobes of the brainB. A circle of arteries at the base of the brainC. Supplies large portions of the lateral cerebral cortexD. Supplies the posterior portion of the cerebrumE. Formed by the bifurcation of the abdominal aortaMiddle cerebral artery
Fill in the blank(s) with the appropriate word(s).
In rheumatoid arthritis
A. the synovial membrane becomes inflamed and thickens, forming a mass. B. only older adults are affected, as growing joints are not affected. C. joints separate and ligaments become extremely loose as they break down. D. synchondrosis joints are affected exclusively.
Which of the following blood pressure readings would be indicative of hypertension?
A) 120/80 in a 30-year-old man B) 140/90 in a 70-year-old woman C) 170/96 in a 50-year-old man D) 110/60 in a 20-year-old woman