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63 Cards in this Set
- Front
- Back
BURSA
anatomy and function |
-flattened. fibrous sacs lined with synovial membranes and contain synovial fluid ex:bursa sac in the patella
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MANDIBLE
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jaw bone
-ramus: side that meets with maxilla -mental foramen: small holes -alveolar process-notches for teeth |
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VOMER BONE
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bone located through nasal cavity
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CORONAL SUTURE
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articulation where parietal and frontal bone meet
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SAGITTAL SUTURE
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articulation where right and left parietal bones meet superiorly
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AXIAL SKELETON
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skull, vertebral column, and rib cage
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APPENDICULAR SKELETON
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limbs, shoulder, and hips
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LAMBROID SUTURE
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articulation where parietal bones and occipital bone meet posteriorly
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SQUAMOUS SUTURE
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articulation where parietal and temporal bone meet
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KYPHOSIS
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hunchback
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SCOLIOSIS
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abnormal lateral curve
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LODROSIS
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swayback
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ABDUCTION
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movement away from midline
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ADDUCTION
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movement towards midline
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FLEXION
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decreases angel of joint
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EXTENSION
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increases angle of joint
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DORSIFEXION
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feet points towards feet
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PLANTAR FLEXION
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feet points towards plantar region
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CIRCUMDUCTION
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circular movements
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PROTRACTION
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pointing chin out
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RETRACTION
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chin pulled in
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DEPRESSION
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chin pointed down, towards chest
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ELEVATION
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chin up
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ROTATION
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turning around its own axis
ex: hip and shoulder joints -lateral:away from midline -medial: towards midline |
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GLIDING
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wrist and ankle movements
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HYPEREXTENDED
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leaning backwards
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PRONATION
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"ppro" basketball player
radius rotates over ulna |
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SUPINATION
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can hold a bowl of soup
radius and ulna parallel |
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INVERSION AND EVERSION
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inversion - angle foot in
eversion - angle foot out |
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FUNCTIONS OF THE SKELETAL SYSTEM
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-internal support
-framework for movement -blood skell production -organ protection -mineral storage |
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SPHENOID BONE
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bone behind eye and runs between left and right temporal bones
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LACRIMAL BONES
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meets maxilla inside orbital cavity (eye gunk)
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ETHMOID BONE
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between sphenoid bone and and lacrimal bone
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MASTOID PROCESS
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bottom, pointy part of temporal bone
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STYLOID PROCESS
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pointy spike off temporal bone attached to external accoustic meatus
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Muscle Contraction:
Step 1 |
In rest, Actin and Myosin are not joined
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Muscle Contraction:
Step 2 |
A nerve impulse stimulates the motor unit to release acetylcholine
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Muscle Contraction:
Step 3 |
Acetylcholine causes the release of Calcium
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Muscle Contraction:
Step 4 |
Calcium unlocks the tropomyosin block between Actin and Myosin
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Muscle Contraction:
Step 5 |
Myosin binds to Actin receptor sites to form cross bridge
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Muscle Contraction:
Step 6 |
ADP and P (phosphate) are released from Myosin, power stroke slides Actin and Myosin over each other
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Muscle Contraction:
Step 7 |
ATP binds to Myosin, releasing Actin
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Muscle Contraction:
Step 8 |
ATP breaks down to ADP+P, Myosin head recocks and moves down Actin filament
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Skeletal Muscle
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layers of dense connective tissue, called fascia, soround and seperate each muscle
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Epimysium
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whole muscle
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Perimysium
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fascicles (bundles of muscle cells)
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Endomysium
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covering over individual mm fibers/muscle cells
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condyle
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-rounded articular projection
-help form joints |
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tuberosity
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-large rounded projection
-may be roughened -site for muscle and ligament attachment |
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fossa
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-shallow basin like depression
-often serving as an articular surface -allows blood vessels and nerves to pass through |
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epicondyle
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-raised area on or above condyle
-site for muscle and ligament attachment |
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foramen
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-round or oval opening through bone
-allows blood vessels and nerves through |
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fissure
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-narrow, slit like opening
-allows blood vessels and nerves to pass through |
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tubercle
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-small rounded projection or process
-site for muslce and ligament attachment |
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meatus
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-canal like passageway
-blood vessels and nerve pass through |
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process
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-any bony prominence
-site for muscle and ligament attachment |
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long bone
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humerus
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short bones
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tarsals and carpals
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flat bones
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sternum and most skull bones
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irregular bones
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vertebrae
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wormian or sutural bones
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tiny, irregular shaped bones found in sutures
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sesamoid bones
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hort irregular bone embedded in tendon
ex: patella |
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osteon
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-tree trunk looking in bones
-sorround the Haversian or central canal -consists of interconnecting canals (canaliculi) to supply nutrients to bone |