Anatomy - Skeletal, Muscular, Nervous System Flashcards
5 main functions of skeletal system
- Protection: skull & ribs
- Storage of minerals: calcium, salts, phosphorus
- Red blood cell production: carry oxygen & transport CO2 to lungs for exhaling
- Structure: framework that muscles attach to
- Movement: muscles contract or release, creating movement of bones
Bones
- body’s reservoir for calcium
- dynamic living tissue, ever-changing
- yoga helps to maintain bone density
- variety of sizes and shapes
Ligaments
- bind bone to bone
- stronger, stabilize joint while allowing for movement
- larger collagen content than tendons
Tendons
- bind muscle to bone
- more flexibility & pliability
- larger elastin content than ligaments
Tensegrity
Net of continuous tension that creates stability without direct contact (bones connect via soft tissue).
If the tension network becomes weak = cannot support = tension/compensation elsewhere.
Like a trampoline.
Fascia
- One continuous interconnected system that exists from head to toe (like a bodysuit)
- made up of elastin & collagen
Two main functions of fascia
- Connection: attach, separate, support organs, fill space, communication, force transmission
- Protection: enclose, store fat, fight infections, insulate
Joints
- junctions where two bones meet
- 360 joints in human body
- shape of the joint reflects their function
Yoga & joints
- low impact vs. high impact exercise
- minimal damage to cartilage
- increase in range of motion (ROM)
- less strain on joints due to stronger muscles
- helps to circulate synovial fluid: less friction in joints
Body’s control center and communication network
Brain
Spinal cord
Nerves
Structure of the nervous system
Central nervous system (CNS) > brain > spinal cord Peripheral nervous system (PNS) > somatic nervous system > autonomic nervous system - sympathetic nervous system - parasympathetic nervous system
Parasympathetic nervous system
Rest and digest
conserves energy, maintains quiet state
Sympathetic nervous system
Flight, fight or freeze.
mobilizes body for action, energy output
Muscular system: ‘personal signature’ of movement
- genetics: loose/tight CT, bone shape
- prior activities: sports
- modeling: physical & mental patterns picked up from parents
- prior injuries: trauma, accidents, tension
- spiritual/karma: past lives
- yoga & facilitated pathway: repetition to create a new habit
Amount of muscles in human body
640
And 100.000 muscles cells act together causing movement