Unit 3

Question 1

classification criteria for muscles

Answer 1

striations, nervous control, number of nuclei

Question 2

skeletal muscle

Answer 2

striated, voluntary, multinucleate

Question 3

smooth muscle

Answer 3

not striated, involuntary, uninucleate

Question 4

cardiac muscle

Answer 4

striated (w intercalated discs), involuntary, uninucleate

Question 5

excitability

Answer 5

ability to respond to a stimulus, can be activated

Question 6

contractility

Answer 6

shorten and thicken in response to a stimulus

Question 7

extensibility

Answer 7

ability to be stretched beyond original shape

Question 8

elasticity

Answer 8

able to return to normal shape and size

Question 9

functions of muscle

Answer 9

motion, maintenance of posture, stabilizing joints, heat production

Question 10

skeletal muscle composition

Answer 10

skeletal muscle fibers, blood vessels, nerve fibers, connective tissue

Question 11

muscle attachment

Answer 11

minimum of 2 for each muscle, direct or indirect

Question 12

direct attachment

Answer 12

muscle on bone, fused with periosteum

Question 13

indirect attachment

Answer 13

muscle attached to bone via tendon or aponeurosis

Question 14

origin

Answer 14

attachment site to bone that does not move as muscle contracts

Question 15

insertion

Answer 15

attachment site to bone that moves as muscle contracts

Question 16

tendon

Answer 16

connective tissue sheet or rope-like attachment that connects muscle to bone

Question 17

aponeurosis

Answer 17

connective tissue sheet-like attachment

Question 18

epimysium