the median nerve. This syndrome is mostly seen among the clerks, software professionals and pregnant women and people who constantly play or text in mobile phones. Metacarpals, the palm bones are in number and phalanges the digits bones are in number. &DUSDOV &ODYLFOH 6FDSXOD +XPHUXV 8OQD 5DGLXV *OHQRLG FDYLW\ 6KRXOGHUMRLQW (OERZMRLQW :ULVWMRLQW 0HWDFDUSDOV 3KDODQJHV $FURPLRQ 2OHFUDQRQ SURFHVV Figure .
Pectoral girdle with upper limb (b) Pelvic Girdle The pelvic girdle is a heavy structure specialized for weight bearing. It is composed of two hip bones called coxal bones that secure the lower limbs to the axial skeleton (Figure . ). Together, with the sacrum and coccyx, the hip bones form the basin-like bony pelvis.
Each coxal bone consists of three fused bones, ilium, ischium and pubis . At the point of fusion of ilium, ischium, and pubis a deep hemispherical socket called the acetabulum is present on the lateral surface of the pelvis. It receives the head of the femur or thigh bone at the hip joint and helps in the articulation of the femur. Ventrally the two halves of the pelvic girdle meet and form the pubic symphysis containing fibrous cartilage.
Figure . Pelvic girdle with lower limb 3KDODQJHV ,OLXP $FHWDEXOXP +LSMRLQW .QHH MRLQW $QNOH MRLQW 3XELV ,VFKLXP 3XELF V\PSK\VLV )HPXU 7DUVDOV 0HWDWDUVDOV 3DWHOOD 7LELD )LEXOD XI Std Biology-Zoology Chapter- The ilium is the superior flaring portion of the hip bone. Each ilium forms a secure joint with the sacrum posteriorly. The ischium is a curved bar of bone.
The V-shaped pubic bones articulate anteriorly at the pubic symphysis . The pelvis of male is deep and narrow with larger heavier bones and the female is shallow, wide and flexible in nature, and this helps during pregnancy which is influenced by female hormones. The pelvic girdle is a heavy, strong girdle. How does its structure reflect its function?
The Lower Limb The lower limb consists of bones which carries the entire weight of the erect body and is subjected to exceptional forces when we jump or run. The bones of the