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Muscular System Chpt. seven (Smooth Muscle (involuntary muscle, don't…
Muscular System Chpt. seven
skeletal system
provides framework of the human bdy
voluntary muscle, attaches to bone that attaches to the skeletal system
fiber appears striped so sometimes called striated muscle
allows external movement and development through exercise
Muscular system
provides movement for the body
they come in variety of shapes and sizes
it is all because of the humerus system
muscle
general term for all contractile tissue
Latin word for mouse because movement of muscles looks like mice running around under skn
contractile
it is a property of the muscle tissue
allows it to become short and thick
it's a result of nerve impulse and then to relax once impulse is removed alternative contraction and relaxtion causes movement
Muscle cells
muscle cells elongated
they resemble fibers like those in a rope
Muscle tissue
constructed of bumps of these fibers
each approximately the size of a human hair
Muscle
skeletal
smooth
cardiac
skeletal muscle
Smooth Muscle
involuntary muscle
don't have a striped appearance of skeletal muscle
found with certain organs
sometimes called visceral muscle
change in blood vessel diameter is an example
cardiac muscle
completely involuntary
striated appearance
found in heart
contraction of muscle causes heart beat, internal movement
Myopathy
general term for muscle disease or disorder
cause included
injury
medication
cellular abnormalities
nervous system disorder
genetics
symptoms
weakness
cramping
stiffness
spasm
skeletal muscle
attached to bones
provides movement
tendons
fibrous tissues that attaches skeletal muscle to bones
ligaments
attaches bone to bone
some muscles attach directly to bone or soft tissue without tendon
controlled by conscious thought
signs and symptoms of injuries
mild train
mild pain and possibly stiffness
moderate strain
more intense pain, bruising, obvious weakness
severe strain
severe pain, swelling, extensive bruising, often complete loss of movement
strains
caused by overstretching tendons or muscles
severity of injury can range from mild to severe
mild
pulled muscle
severe
complete muscle tear or complete tendon rupture
injuries
acute
usually resulting from trauma
chronic
usually resulting from overuse or disease