Practice your trivia skills: Science & Nature

Science & Nature

141. What causes the sound of a heartbeat?

Blood exiting the heart

Contraction of the heart chambers

Closure of the heart valves

Relaxation of the heart chambers

142. What is Hypernatremia?

Increase in blood sodium

Increase in blood glucose

Decrease in blood iron

Decrease in blood potassium

143. Which of these is NOT a part of the structure of a typical neuron?

Node of Ranvier

Schwann cell

Islets of Langerhans

Myelin sheath

144. Which of these is a type of stretch/deep tendon reflex?

Pupillary light reflex

Scratch reflex

Gag reflex

Ankle jerk reflex

145. Which planet did the "Viking 1" spacecraft send surface images of, starting in 1976?

Venus

Jupiter

Mars

Saturn