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How many separate bones is the adult skeleton compsed of?
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A&P1 - Ch 8
Skeletal System
| Question | Answer |
|---|---|
| What is your question, Raul? | What is the answer I should give you? Remember to save often! =) |
| How many separate bones is the adult skeleton compsed of? | 206 separate bones |
| Axial skeleton # of bones? | 80 bones |
| Appendicular skeleton # of bones? | 126 bones |
| Skull: Made of # of bones? Two major divisions are? | 28 bones Cranial and facial bones. |
| Firbro cartilage? | Vertibrade disk and knees |
| Which is made of elastic cartilage? | External ear and the larynx. |
| Nerve tissue is derived from what type of germ layer? | Ectoderm |
| Cranial bones: List names (6) | Frontal, parietal, temporal, occipital, sphenoid, ethmoid, |
| Facial bones: List names (8) | Maxilla(upper jaw), mandible(lower jaw), zygomatic, nasal, lacrimal, palatine, inferior nasal conchae (turbinates), vomer bone |
| T/F Thin and fragile orbital walls separate orbital structures from cranial and nasal cavities and paranasal sinuses | True |
| Allow skull to "mold" during birth process and permit rapid growth of brain (term) | Fontanels or "soft spots" |
| ___ skull permits differential growth or apperance of sull components over time | fetal skull |
| Only bone in the body that articulates with no other bones | hyoid bone |
| Vertebral column: In adults consists of __ vertebrae. __ are true(movable) and __ are false (non movable) | 26, 24, 2 |
| Vertebral column: consists of __ vertebrae in infants | 33 |
| 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 |
| vertebral column as a whole articulates with the __, ___, and ___ bones | head, ribs, iliac |
| A dagger-shaped bone in the middle of the anterior chest wall | Sternum |
| Sternum: ,made up of three parts | Manubrium, body, xiphoid process |
| Ribs 1-7 connect directly to the sternum by means of __ __ | costal cartilage |
| What forms the thorax? | 12 pairs of ribs, with the vertebral column and sternum. |
| The heads of ribs 2 through 9 articulate with __ vertebral bodies. | 2 |
| 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. |
| Upper extremity consists of the bones of the: __ __, __ __, __ __, __ and __ | shoulder girdle, upper arm, lower arm, wrist, and hand |
| Shoulder girdle: at its lateral end, clavicle articulates with the acromion process of the __ | scapula |
| Upper extremity: Carpal bones: How many small bones form wrist? | 8 |
| Carpals are bound closely and firly by __ and form __ rows of __ carpals each | ligaments, 2, 4 |
| The joints between __ and __ allow wrist and hand movements | radius and carpals |
| Heads of metacarpals (knuckles) articualte with __ (# bones) | phalanges, 14 bones |
| Made up of the sacrum and two coxal bones, bound tightly by strong ligaments | pelvic girdle |
| Ilium | largest and uppermost |
| Ischium | strongest and lowermost |
| pubis | anteriormost |
| Each coxal bone is made up of three bones that fuse together | Ilium, Ischium, Pubis |
| Femur | Longest and heaviest bone in the body |
| Patella | Largest sesamoid bone in the body |
| Tibia: Lower end makes __ __ | medial malleolus |
| Articulates proximally with the femur to form the __ __ | knee joint |
| Fibula: lower end makes __ __ | lateral malleous |
| Tarsal bones: __ tarsal bones make up the __ | 7, ankle |
| Foot bones are held together to form __ __ | spring arches |
| __ __ __ is made up of calcaneus, talus, navicular, cuneiforms, and medical three metatarsals | Medial longitudinal arch |
| __ __ arch is made up of calcaneus, cuboid, and fourth and fifth metatarsals | lateral longitudinal |
| Deep and funnel-shaped with a narrow pubic arch (__ pelvis) | Male |
| Shallow, broad, and flaring with a wider pubic arch ( __ pelvis) | Female |
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jerricababy
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