morphology of a gorilla
leg 
Powerful muscular lower limb supporting the body in an upright position.
hand 
Terminal part of the upper limb having a tactile and prehensile function, with a thumb opposable to the other fingers.
opposable thumb 
Short sturdy first digit of the hand facing the other digits and used for grasping and using tools; it is also used to hang from objects.
prehensile digit 
Articulated limb ending in a nail; along with the thumb, it is used to grasp food and to cling to objects.
fur 
Hair covering the body, with the main exceptions of the face, palms of the hands and soles of the feet; it maintains body temperature.
arm 
Powerful muscular upper limb mainly supporting the body while walking.
face 
Front portion of the head comprising especially the orifices of the sense organs.