muscular system

Question 1

skeletal muscle

Answer 1

interacts with skeletons to move body parts, Long, thin cells are called fibers, they have more than one nucleus, helps stabilize joint, voluntary, striated

Question 2

smooth muscle

Answer 2

found in walls of hollow organs and blood vessels, smaller cells than skeletal muscle cells, not straited, one nucleus, involuntary

Question 3

cardiac muscle

Answer 3

found only in the heart, can contract on its own without stimulation of the nervous system, involuntary, straited

Question 4

how antagonistic muscle pairs work

Answer 4

one contracts while the other relaxes, each responsible for the opposing movement, biceps/triceps

Question 5

slow or red fibers

Answer 5

more blood vessels that deliver more oxygen, more mitochondria- lots of ATP sustain slow contractions over long periods of time

Question 6

“fast” and “white” fibers

Answer 6

faster, more powerful contractions can’t be sustained over long periods of time