24 terms

Muscular System Mrs. Schell

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640
an organ system consists of how many muscles
Main Functions
allows movement, maintain posture, stabilize joints and generates heat
Muscles are made of
Skeletal muscle, tissue, blood vessels, tendons and nerves
Muscles are also found in the
heart, digestive organs and blood vessels
Muscles
serves to move substances through the body
Exitable or Irritable
capable of receiving and responding to stimulation by nerves.
Contractable
capable of shortening
Extensible
can be stretched without damage
Elasticity
able to return to resting shape after being contracted or extended
Adaptability
can change in response to how it's used, get bigger or smaller
Voluntary
controlled consciously by a person such as speaking, walking, and writing
Involuntary
controlled by the unconscious art of the brain such as heartbeat, intestine moving waste and breathing
Cardiac (involuntary)
form the wall of the heart and controls your heartbeat
Smooth visceral-(involuntary)
weakest of all muscle tissues found in organs and perform unique functions like grinding, churning or moving
Skeletal (voluntary)
connect to the skeleton in at least one place to move parts of bones closer to each other
Fibrous
dense layered collagen
Tendons
attach muscle to bone
Facia
surrounds muscles and connects
Nervous
system working with the muscular and muscular system is essential to the voluntary skeletal system
Muscle Movement
if nerves are severed, they will not be able to produce
Muscular Dystrophy
genetic disease that causes damage of muscle fiber causing weakness, immobility, and imbalance
Cerebral Palsy
congenital disorder that affects the posture, balance, and motor functions
Amyotrophic Lateral Sclerosis (ALS)-Lou Gehrig's disease
neurodegenerative disease that causes loss of control on voluntary muscles
Tendonitis
tendons get inflamed or irritated most common in wrists, elbows, shoulders and heels causing pain and swelling