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29 terms

Apologia Exploring Creation with Human Anatomy and Physiology Lesson 3

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gluteus maximus
largest muscle in body which connects the femur and the pelvic girdle
masseter
the strongest muscle in body which allows humans to open and close their mouths
tetanus
a disease in which the masseter tightens and won't open. It is also called lockjaw.
rapid eye movement sleep (REM sleep)
part of the sleep cycle where your eyes move
skeletal muscles
attach to bones and allow you to move
voluntary muscles
muscles you can control by thinking about controlling them
reflexive action
when voluntary muscles move without any thought coming from your brain
muscle tone
when muscles are partly contracted
tendons
strong, flexible fibers that attach bones to skeletal muscles
tendonitis
a painful occurrence when tendons get inflamed from overuse
antagonistic muscles
pairs of muscles that work together so that when one muscle contracts, the other relaxes
extensor muscles
these muscles open the joint wider
flexor muscles
these muscles close the joint
biceps brachii
muscle on the top of the arm
triceps brachii
muscle on the bottom of the arm
atrophy
when a muscle becomes weak and shrinks when it is not used much
muscle fibers
skeletal muscle cell that are long and thin
myofibrils
strands of protein
filaments
even smaller strips of cells inside the myofibrils
striated
striped
striations
the stripes in skeletal muscles
glucose
a sugar used in your body
blood
a special substance that carries nutrients throughout you body
paralyzed
when a person is unable to move a part of their body
anaerobic
when working cells no longer are using oxygen
aerobic
energy production that uses oxygen
lactic acid
a waste product from your cells that can cause cramping
cardiac muscles
found in the heart; involuntary muscles
smooth muscles
these muscles have no striations or stripes; they can be found in blood vessels, stomach, intestines or bladder