Skeletal System
Help!
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| What is your question, Raul? | What is the answer I should give you? Remember to save often! =)
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| How many separate bones is the adult skeleton compsed of? | 206 separate bones
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| Axial skeleton # of bones? | 80 bones
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| Appendicular skeleton # of bones? | 126 bones
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| Skull: Made of # of bones? Two major divisions are? | 28 bones
Cranial and facial bones.
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| Firbro cartilage? | Vertibrade disk and knees
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| Which is made of elastic cartilage? | External ear and the larynx.
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| Nerve tissue is derived from what type of germ layer? | Ectoderm
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| Cranial bones: List names (6) | Frontal, parietal, temporal, occipital, sphenoid, ethmoid,
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| Facial bones: List names (8) | Maxilla(upper jaw), mandible(lower jaw), zygomatic, nasal, lacrimal, palatine,
inferior nasal conchae (turbinates), vomer bone
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| T/F Thin and fragile orbital walls separate orbital structures from cranial and nasal cavities and paranasal sinuses | True
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| Allow skull to "mold" during birth process and permit rapid growth of brain (term) | Fontanels or "soft spots"
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| ___ skull permits differential growth or apperance of sull components over time | fetal skull
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| Only bone in the body that articulates with no other bones | hyoid bone
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| Vertebral column: In adults consists of __ vertebrae. __ are true(movable) and __ are false (non movable) | 26, 24, 2
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| Vertebral column: consists of __ vertebrae in infants | 33
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| All vertebrae, except the first, have the following structures: Which is false (slide 25) 1. A flat, rounded body anteriorly centrally, for support 2. Vertebral arch posteriorly made up of one pedicles for protection | 2
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| vertebral column as a whole articulates with the __, ___, and ___ bones | head, ribs, iliac
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| A dagger-shaped bone in the middle of the anterior chest wall | Sternum
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| Sternum: ,made up of three parts | Manubrium, body, xiphoid process
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| Ribs 1-7 connect directly to the sternum by means of __ __ | costal cartilage
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| What forms the thorax? | 12 pairs of ribs, with the vertebral column and sternum.
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| The heads of ribs 2 through 9 articulate with __ vertebral bodies. | 2
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| Rib attachment to the sternum | Ribs 1 through 7 join a costal cartilage that attaches it to sternum, Ribs 8 through 10 joins the cartilage of the rib above.
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| Upper extremity consists of the bones of the: __ __, __ __, __ __, __ and __ | shoulder girdle, upper arm, lower arm, wrist, and hand
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| Shoulder girdle: at its lateral end, clavicle articulates with the acromion process of the __ | scapula
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| Upper extremity: Carpal bones: How many small bones form wrist? | 8
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| Carpals are bound closely and firly by __ and form __ rows of __ carpals each | ligaments, 2, 4
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| The joints between __ and __ allow wrist and hand movements | radius and carpals
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| Heads of metacarpals (knuckles) articualte with __ (# bones) | phalanges, 14 bones
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| Made up of the sacrum and two coxal bones, bound tightly by strong ligaments | pelvic girdle
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| Ilium | largest and uppermost
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| Ischium | strongest and lowermost
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| pubis | anteriormost
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| Each coxal bone is made up of three bones that fuse together | Ilium, Ischium, Pubis
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| Femur | Longest and heaviest bone in the body
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| Patella | Largest sesamoid bone in the body
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| Tibia: Lower end makes __ __ | medial malleolus
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| Articulates proximally with the femur to form the __ __ | knee joint
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| Fibula: lower end makes __ __ | lateral malleous
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| Tarsal bones: __ tarsal bones make up the __ | 7, ankle
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| Foot bones are held together to form __ __ | spring arches
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| __ __ __ is made up of calcaneus, talus, navicular, cuneiforms, and medical three metatarsals | Medial longitudinal arch
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| __ __ arch is made up of calcaneus, cuboid, and fourth and fifth metatarsals | lateral longitudinal
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| Deep and funnel-shaped with a narrow pubic arch (__ pelvis) | Male
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| Shallow, broad, and flaring with a wider pubic arch ( __ pelvis) | Female
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