Here's a list of human body parts, with at least one for each letter of the alphabet:

A: Arm

B: Brain

C: Chin

D: Diaphragm

E: Elbow

F: Foot

G: Gut

H: Hair

I: Iris

J: Jaw

K: Knee

L: Leg

M: Mouth

N: Neck

O: Ovary (or Organ)

P: Pectoral muscle

Q: Quadriceps

R: Rib

S: Sole

T: Teeth

U: Ulna

V: Vein

W: Wrist

X: Xiphoid process (the tip of the sternum)

Y: Yolk Sac

Z: Zygomatic bone (cheekbone)