Skeletal And Muscular System Flashcards
What are the two components of the human skeleton?
Axial skeleton
Appendicular skeleton
This skeleton supports and protects the long axis of the body and includes the skull, ribs, and spinal column
Axial skeleton
This skeleton makes movement possible and includes the arms, legs, and pelvis
Appendicular skeleton
Specialized bone cells
Osteocytes
Tissue that produces blood cells or stores fat, fills cavities inside hollow bones
Marrow
Hard, White outer region of bone
Compact bone
Tissue that lies inside compact bone
Spongy bone
The dense tissue made of mostly collagen that’s strong and flexible and provides cushion between bones and prevents bone to bone grinding
Cartilage
Junctions where two bones meet that allows movement
Joints
This reduces friction between two bony surfaces and contains lubricating fluid
Synovial sac
3 types of muscle
Voluntary
Involuntary
Cardiac
Muscle type under conscious control; skeletal muscle
Voluntary
Type of muscle that doesn’t require conscious thought to move; smooth muscle
Involuntary
Type of muscle only found in the heart
Cardiac
Muscles often work in opposing pairs
True
False
True
