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Human skeletal system chapt 4

Terms

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major subdivisions of the skeleton
axial skeleton and appendicular skeleton
axial skeleton
central framework of body. includes skull, vertebral column, and thoracic cage
appendicular skeleton
upper and lower members
vertebral body
drum shaped cylinder, purpose to bear weight
neural arch
the arch over the posterior of the spinal cord. Has several processes
processes for neural arch
sites for attachment of trunk muscles and levers for motion
two major types of a typical vertebra
vertebral body, neural arch
regions of vertebral column
cervical region 7(neck) Thoracic region 12(chest)Lumbar region 5(low back) Sacrum region 5(fusion of) Coccyx (tail) 3-4 together
Intervertebral discs
-hold adjacent vertebrae together -fibrous rings with soft centers -allow adjacent vertebral bodies to move on one another -plane type joint between vertebrae
Ligaments
dense FCT structures extending from bone to bone
thoracic (rib) cage
consists of sternum (manubrium, body, xiphoid process) 12 pairs of ribs,12 thoracic vertebrae. Provides protection for vital organs within the thorax and allows movement and breathing.
two major subdivisions of the skull
cranium and facial skeleton
cranium
encases and protects the brain
facial skeleton
encases and protects special sense organs and involved with the beginning of digestive and respiratory tracts.
GIRDLE PROXIMAL SEGMENT MIDDLE SEGMENT DISTAL SEGMENT
Pectoral/Pelvic Girdle Humerus/Femur Radius,Ulna/Tibia,Fibula Carpus, Metacarpals, Phalanges/Tarsus, Metatarsals, Phalanges

Deck Info

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