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The Musculoskeletal System Defined…
• the ________________ that is made up of bones and skeletal muscle;
• the system that ___________ the body, ___________ delicate organs, and makes ___________ possible
Three types of connective tissue in the musculoskeletal system: 1) __________ – hard and dense; consists of
_____________ within a matrix of minerals (calcium and phosphorus) and collagen fibers. There are _________________ for nerves and blood vessels to pass through. ___________ of bone tissue is living.
2)____________ – tough, elastic connective tissue which __________________________ at the joints; made of long fibers of _____________
3) ____________ – dense connective tissue in ears, nose, trachea, disks between vertebrae; made up of special cells in a __________________; provides strong, flexible, low friction support for bones and other tissues
Muscle!
• These proteins cause the muscle to contract (shorten) when signalled by a ______________
• ______________ muscle (voluntary) is muscle tissue attached to bones
• ______________ muscle (involuntary) is located in the intestines
• ______________ muscle (constant) is found in the heart
• Consists of ___________ of long fibres that contain special ___________.
How Muscles Make Bones Move • Muscle is connected by ___________ to two or
more bones. The muscles shorten and exert force on the bones.
Contract = Shorten Relax = Lengthen
• ________- contract bicep - relax tricep
• ________ - contract tricep - relax bicep
Osteoporosis • Common among
_________________ • Involves
_______________ tissue making bones brittle and weak
• Susceptible to many ____________
• Linked to a loss of ____________
The Nervous System Defined… Organ system made up of the __________,
_________________ and _____________ nerves
A delicate _________ of __________ that carries ___________ around the body, allowing us to _______ successfully and safely with our environment
The Nervous System is Divided into TWO PARTS:
Central Nervous System (CNS): Made up of the _____________ and ___________________, the CNS acts as the coordinating centre for mechanical and chemical actions
Peripheral Nervous System (PNS): Consists of the __________ that carry information between the organs of the body and the central nervous system.
Nerve Tissue is made of Neurons • ___________ – special cells that allow direct
cellular communication by transmitting signals.
- The ___________________ acts like insulation on an electrical wire preventing electrical impulses from escaping to the wrong neuron
- Messages are sent in the form of ____________ signals called nerve impulses from one area of the body to another
Neurons Travel in Bundles Neurons travel throughout our body in bundles referred to as ____________.
Sensory Receptors
• There are special cells that ________________ from the external environment and send signals along the _____________ nerves towards the ________________ nervous system.
• Eyes have receptors sensitive to _________. • There are ______________
in our ears, nose, mouth, muscles and skin!
• ___________ = sight, hearing, taste, smell and touch
What’s it all for??
• To ____________________ in both directions from the brain to the rest of your body
• To _________________ with others • To be _________________ • To __________________ the world • To know when to ________ or _________ • To fight or take flight • To tell the ____________ system to breathe harder • To tell the ____________ system to increase heart beat • THE LIST COULD GO ON FOREVER!!!!!!!!!!!!!!!!!!!!!!!
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