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20 Cards in this Set
- Front
- Back
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Axial Division of Skeletal System |
80 bones Skull Auditory Ossicles Hyoid Ribs Sternum Vertebrae (Trunk and head) |
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What are the Auditory Ossicles? |
Malleus Incus Stapees |
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What is the hyoid bone for? |
Ligament attachment in neck. |
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Sections of the Vertebrae |
7 Cervical (neck) 12 Thoracic 5 Lumbar 5 fused vertebrae make up sacrum Coccyx (tail) |
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Appendicular Division of the Skeleton |
Includes upper and lower limbs and girdles. |
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What is a girdle? |
Anchors limbs to trunk. |
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What's in the pectoral girdle? |
Clavicle & Scapula |
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What's in the Os Coxa (girdle)? |
3 bones - ileum, ischium, pubis
Ileum- flat upper portion where glutes attach.
Ischium- posterior and inferior - what you sit on.
Pubis - anterior for reproductive protection.
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Long Bones
Description? Function? Why are they curved? Examples? |
Greater in length than width
Support body
Curved for greater strength
Limbs and phalanges |
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Short Bones
Description? Function? Examples? |
Cube shaped, more spongy than compact
Provide flexibility
Carpals (NLTPTTCH) & Tarsals |
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Flat Bones
Description? Function? Why do they have a large surface area? Examples? |
Thin and flat
Protect organs (ex cranial)
Large surface area for muscle attachment.
Cranial bones, sternum, ribs, scapula |
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Irregular Bones
Description? Examples? |
Complex shapes
Vertebrae and facial bones |
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Sesamoid Bones
Where do they develop? Examples? |
Develop in tendons of high pressure.
Patella, hyoid, baculum (penis bone in some animals such as whales). |
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Sutural Bones |
Look in book. |
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What are rough area bone surface markings for? |
Attachment of tendons and ligaments.
What are tendons? Ligaments? |
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What are groove bone surface markings for? |
Protection and routes for blood vessels. (Ex scapular notch) |
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What are groove bone surface markings for? |
Protection and routes for blood vessels. (Ex scapular notch) |
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What are canal bone surface markings for? |
Blood vessels and nerves. |
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Bone differences in males and females. |
Males bones are heavier and larger.
Articulate ends heavier with larger surface markings.
Pelvic bone differences: Females pelvic arch is > 90 degree. Females light and thin Females greater pelvis is more shallow. Females pelvic brim (inlet) is wide and more oval (males heart shaped) Females acetabulum is small and faces anterioraly (males laterally) Females obturartor foramen is oval (males round) |
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Paranasal Sinuses
Description? Function? What bones have sinuses? |
Cavities in cranial and facial bones that are lined with mucus membranes.
Resonating chambers for sound and to lighten the skull (primary).
Frontal, ethmoid, sphenoid, maxillary |
