[ Cardiology Services ]
The SA node is responsible for which type of heart rhythm?
A. sinus
B. atrial
C. ventricular

Random Topics:
ConjunctionsSimple Past/Past ProgressivePast SimpleDefinite & Indefinite Pronoun & ConditionalsVocabullary TestClause Markers TOEFL GrammarArticles & PrepositionArticle and Order of AdjctiveTenses and VerbsComparative & Superlative AdverbsOther quiz:
Correlative Conjunctions › ViewWhat role do correlative conjunctions play in a sentence?
A. To add emphasis
B. To introduce subordinate clauses
C. To join words or phrases
D. To connect independent clauses
Narrative Tenses › View
I ______ to the park last week.
A. went
B. had been going
C. had gone
D. was going
Homonyms › ViewThe Queen sat on her ___ to open parliament.
a. throne
b. thrown
Conditional Sentence Type 2 › View
What would you do if you ______ a million pounds?
A. won
B. win
C. will win
D. had won
