What are the obligations of a middle back and a middle hitter in volleyball?

Question

I have to write this down for homework and I have no clue what to write so please help. It should be something like when there's a serve on the opposing team a middle back does what and so on.

Answer 1

middle back communicates with other backs, takes the very back of the court, all the way from the left sideline to the right sideline.

anybody receiving serve has to pass to the setter.

middle hitter blocks all hits, either moving to the left, right, or staying put as necessary. everybody in front court has to switch around the middle hitter. middle also does quickhits, as well as regular middle hitting.

Answer 2

Middle back is the last line of defense who needs to cover at least the whole back court from left corner to right corner, especially when two other back row players are up front covering tips/blocks.

Middle back needs to communicate with other two back row players regarding whether he will take a certain serve, or let other two take over handed pass. He needs to call "short" when he thinks one of those other two should take a serve or tip.

Middle back needs to cover those other two when any of them could not send a spike to the setter (say it is going backward or sideway, middle back would have to RUN). He should be ready to set for the outside hitter if both the primary setter and backup setter called for "Help" (assuming that you have two very good setters on the court), if the pass sent the ball way back.

Middle hitter needs to run up for block when the ball is on the other side. He needs to pair up with player on his left or right side to complete a double block, and to block anything like a missed pass all by himself.

After the blocking action, if the ball is still in play on his side, the middle hitter should come "back" very quickly and get ready for a quick hit... usually one big step back and one--two-three step up.

When there is a "good enough" pass, middle hitter should always go up and swing; if the pass were really bad and the setter had to settle with outside hitter, middle hitter would have to get ready to cover the hitter against any block.

Other obligations could involve high-fives to those who did a good job, reminding teammates about their starting positions, calling the ball whenever necessary, diving for the ball when nobody else wanted to sacrifice, and last but not least doing massage for hitters (just kidding)