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