Skeletal system

Badil das Lecturer Institute of Nursing Dow University of Health Sciences 16th October, 2012

Objectives:By the end of this lecture, the students will be able to:

• Define Axial and appendicular system

• Discuss the skull interim of:

– Structure

– Bones – Functions

Skeletal system

• The adult human skeleton consists of 206 named bones.

• Bones of the adult skeleton are grouped into two principal divisions:

– Axial skeleton (80 bones)

– Appendicular skeleton (126)

Skeletal system

The axial skeleton• The axial skeleton consists of the bones that lie

around the longitudinal axis of the human bodySkull– Cranium 8– Face 14Hyoid 1Auditory ossicles 6Vertebral column 26Thorax– Sternum 1– Ribs 24Subtotal 80

Appendicular SkeletonPectoral (shoulder) girdles

– Clavicle 2– Scapula 2

Upper limbs– Humerus 2– Ulna 2– Radius 2– Carpals 16– Metacarpals 10– Phalanges 28

Conti..

Pelvic (hip) girdle– Hip, pelvic, 2

Lower limbs– Femur 2– Patella 2– Fibula 2– Tibia 2– Tarsals 14– Metatarsals 10– Phalanges 28

Subtotal 126Total in an adult skeleton 206

The axial skeleton

Skull

– Cranium 8

– Face 14

Skull