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A&P1 - Ch 8

Skeletal System

QuestionAnswer
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
Created by: jerricababy