All of these are body regions.
Antecubital, brachial, crural, and femoral regions are ventral/anterior appendicular body regions.
Axillary region is ventral/anterior axial body region.
Popliteal and sural body regions are dorsal/posterior appendicular body regions.
C. Temperature and pH can affect how enzymes work.
If she is O+ then others of O+ and O- can donate to her. If she is O- then only those with O- can give blood to her.