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Human Phys Skeletal
Human Physiology Skeletal System Test Review
Question | Answer |
---|---|
Abduction | Moving parts AWAY from the midline. |
Adduction | Moving a part TOWARD the midline. |
Circumduction | Moving a part in cone shape; distal end follows circular path. |
Dorsiflexion | Flexing foot upwards toward shin. |
Eversion | Turning foot so sole faces outward. |
Inversion | Turning foot so sole is facing inward. |
Plantar Flexion | Flexing foot toward sole; pointing toes. |
Pronation | Turning hand so palm is downward (posterior). |
Rotation | Moving part around a longitudinal axis; shaking head "no." |
Supination | Turning hand so that palm faces upward. |
Gliding | Flat bone surfaces move back and forth and side to side. |
What joints have little or no movement? | Cartilaginous and Fibrous. |
Ligament | Reinforces the fibrous capsule; help prevent dislocation of the joint. |
Hyaline Cartilage | The connective tissue that keeps bone ends from crushing when they are compressed. |
Synovial Fluid | The lubricant that minimizes friction and abrasion of joint surfaces. |
Diaphysis | Shaft/body of the bone. |
Endosteum | Lines medullary (marrow) cavity. |
Calcification | Calcium connects with collagen fibers to harden bone. |
Lamellae | Circular, ring-like matrix around a central canal. Concentric rings of calcified matrix. |
What type of cartilage is involved in ossification? | Hyaline |
Osteogenic Cells | Unspecialized stem cells; only cells that go under cell division. |
Osteoblasts | Bone-building cells. "Good cells." Lay down additional matrix and become osteocytes. |
Osteoclasts | Break down the matrix. Reabsorption. |
If body Ca is too low... | PTH is released and osteoclasts break down bone and release Ca into the blood. |
If body Ca is too high... | Ca is deposited into bone matrix as a salt after the bones become stronger and harder. |
What shape is a short bone? | Cubical |
Flat Bones | PROTECT organs. Skull, ribs, scapula, sternum. |
Where is red bone marrow found? | Skull, ribs, sternum, clavicle. Makes RBC, WBC, platelets. |
Foramen | Openings for blood vessels, ligaments, or nerves. |
What is different between an adult and a baby cranium? | The baby's is more larger and disproportional to the rest of the skull. |
What is the difference between Fibrous and Cartilaginous joints? | Fibrous are immovable. Cartilaginous is cartilage that connects bones. |
Tendon | Muscle to bone. |
Ligament--connects? | Bone to bone. |
Axial Skeleton | Bones that lie vertically. |
Appendicular Skeleton | Upper and lower limbs and girdles. |
Fontanels | The soft spots on a young child's skull. Allow growth for skull as they are flexible and reshape once stopped growing. |
Yellow Bone Marrow | Found in long bones, such as the arms and legs. Has fat (adipose) cells that are used in extreme hunger. |