Misc: if you lock you ---------- while standing long enough, you will pass out?

Questions

In the human body, what is the axilla?

Name the Gold Medal winner in the Men's High Jump at the 1968 Olympic Games?

French Sudan is the previous name of which country?

Who wrote the novel 'The Call of the Wild'?

Which of Shakespeare's plays begins with the line 'Now is the winter of our discontent.'?