Practice your trivia skills: Science & Nature
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Science & Nature
141. What causes the sound of a heartbeat?
Relaxation of the heart chambers
Contraction of the heart chambers
Blood exiting the heart
Closure of the heart valves
142. What is Hypernatremia?
Increase in blood glucose
Decrease in blood iron
Decrease in blood potassium
Increase in blood sodium
143. Which of these is NOT a part of the structure of a typical neuron?
Islets of Langerhans
Myelin sheath
Node of Ranvier
Schwann cell
144. Which of these is a type of stretch/deep tendon reflex?
Gag reflex
Scratch reflex
Ankle jerk reflex
Pupillary light reflex
145. Which planet did the "Viking 1" spacecraft send surface images of, starting in 1976?
Jupiter
Venus
Saturn
Mars
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