1. Muscles are grouped in antagonistic sets because:
A. muscles cannot lengthen by themselves.
B. muscles push but cannot pull.
C. they do not like one another.
D. there is an increase in metabolic efficiency if they are present in antagonistic sets.
is it A
2. In most women's menstrual cycles, ovulation occurs:
A. at the onset of the flow.
B. halfway through the cycle.
C. just after sexual intercourse.
D. just following the last cycle.
is it A
1 answer