Skeletal System Flashcards
What is the importance of skeletal System
Provide support, shape, structure and protection for the body and production of red blood cells (Hematopoiesis)
What is a skeletal system
Interconnected system of bones, ligaments and tendons
Name the two divisions of skeletal system and provide an example
Axial Skeleton (Middle)
- Head bones, Facial bones, spinal column, coccyx
Appendicular skeleton
- long, short, irregular, sesamoid and flat
Differentiate diaphysis from epiphysis
diaphysis (compact bone) and epiphysis (spongy bone)
Give examples of long bones, short bones, irregular, flat and sesamoid bones
Long - humerus and femur
Short - carpals and tarsals
Sesamoid -knee cap
Irregular - vertebrae
Flat- skull
What is periosteum
bone covering that protects bones
What is a marrow cavity
the inside of the bone
Differentiate joint, tendons and ligament
Joint is the point where bones meet or articulations
Tendons- are muscles attached to bones
Ligaments- elastic tissue that restricts movement, attaches bones and muscles
Give example of long bones in arms and legs
Arm
- humerus, ulna, radius
Legs
- femur, fibula, tibia
Differentiate ulna from radius and fibula from tibia
ulna - longer and thinner and is in the medial side of the forearm and extends from elbow to pinky
radius - thicker and is on the lateral side of the elbow
Fibula- thinner and smaller bone on the outside
Tibia - thicker and larger and is in the inside
what are short bones and how do they differ from long bones
Short bones are found in areas where strength, compactness, and limited movement are desired
Long bones are found in limbs
Examples of short bones
Carpals and tarsals
Metacarpals and metatarsals
phalanges
How many bones are there in the skeletal system
206 bones
Differentiate flat bones from irregular bones
flat bones is found in areas where protection or muscular attachment is desires
Irregular bones have a fairly complex shape, which helps protect internal organs
Gives examples of flat bones
thoracic area, chest, skull and scapula
Examples of irregular bones
vertebrae, sphenoid, hyoid and spinal column