Question

pelvic girdle: hips. two large bones called
upper leg -
kneecap:
lower leg -
and
ankle and upper foot - 7 bones called
largest is the heel bone called the
foot:
| toes:
carpals - (wrist bones) and tarsals (ankle bones)
external structure
table 1: the skeleton
a frontal
r sacrum
b temporal
s coccyx
c zygomatic
t radius
d true ribs
u carpals
e ilium
v metacarpals
f ischium
w femur
g pubis
x patella
h parietal
y tibia
i temporal
z fibula
j maxilla
aa calcaneus
k mandible
bb tarsals
l acromion
cc metatarsals
m clavicle
dd phalanges
n costal cartilage
ee occipital
o humorous
ff pectoral girdle
p vertebral column
gg pelvic girdle
q ulna
hh phalanges
disorders of the skeletal system

Explanation:

The problem is about the skeletal system, which falls under Biology (a subfield of Natural Science). To answer the fill - in - the - blanks:

• Pelvic Girdle (Hips): The two large bones are the ilium, but looking at the table, the pelvic girdle is made of three fused bones on each side (ilium, ischium, pubis), but the first blank for "two large bones called" in pelvic girdle context, from the table, the pelvic girdle (GG) is related to E (Ilium), F (Ischium), G (Pubis). But the initial fill - in for pelvic girdle bones: the two large bones (part of the three - part pelvic girdle) are the ilium (E), but maybe the question expects the name of the bones in the pelvic girdle. Wait, the pelvic girdle (hip girdle) is composed of the ilium, ischium, and pubis. But the first blank: "Two large bones called" – maybe a typo, but from the table, the pelvic girdle (GG) has E (Ilium), F (Ischium), G (Pubis). But let's check the other blanks:
• Upper leg: The bone is the femur (W).
• Kneecap: Patella (X).
• Lower leg: Tibia (Y) and Fibula (Z).
• Ankle and Upper foot: 7 bones called tarsals (BB).
• Largest is the heel bone called the calcaneus (AA).
• Foot: metatarsals (CC); Toes: phalanges (DD or HH, but for toes, phalanges (DD for hand, HH for foot? Wait, the table has DD Phalanges (hand) and HH Phalanges (foot). So Foot: metatarsals (CC); Toes: phalanges (HH).

Answer:

• Pelvic Girdle: Hips. Two large bones called \(\boldsymbol{\text{Ilium (and Ischium, Pubis - but from the table, E, F, G)}}\) (but more accurately, the pelvic girdle is made of ilium, ischium, pubis; the first blank could be ilium as a large bone)
• Upper leg - \(\boldsymbol{\text{Femur (W)}}\)
• Kneecap: \(\boldsymbol{\text{Patella (X)}}\)
• Lower leg - \(\boldsymbol{\text{Tibia (Y)}}\) and \(\boldsymbol{\text{Fibula (Z)}}\)
• Ankle and Upper foot - 7 bones called \(\boldsymbol{\text{Tarsals (BB)}}\)
• Largest is the heel bone called the \(\boldsymbol{\text{Calcaneus (AA)}}\)
• Foot: \(\boldsymbol{\text{Metatarsals (CC)}}\) | Toes: \(\boldsymbol{\text{Phalanges (HH)}}\)