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