muscular system

Question 1

tissue

Answer 1

group of cells that function together as a unit, but lower level than organs

Question 2

three types of muscle tissues

Answer 2

skeletal, cardiac, and smooth

Question 3

skeletal muscle tissue

Answer 3

attaches to bone (mostly by tendons) and is involved in the movement of bones and is the only voluntary muscle tissue in the body.
very strong and straited (ridged)

Question 4

cardiac muscle tissue

Answer 4

involuntary muscle that is found in the heart.
also straited

Question 5

smooth muscle tissue

Answer 5

involuntary muscle tissue found in the walls of hollow organs, and passageways, such as the stomach, intestines, and blood vessels
weakest muscle tissue

Question 6

tendons

Answer 6

tough bands of connective tissue that have strong collagen fibers.
attach muscle to bone.

Question 7

muscles

Answer 7

contain long myofibrils made of sarcomere units, each consisting of long strand of protein called actin and myosin.

Question 8

actin

Answer 8

thin filaments

Question 9

myosin

Answer 9

thick filaments

Question 10

sarcomere

Answer 10

contracting unit of a muscle

Question 11

contraction and relaxation

Answer 11

contracting filaments bind and are pulled together, therefore being shortened.
relaxed muscle filaments, myosin and actin, are not attached.