muscular system

Question 1

skeletal muscle

Answer 1

voluntary

on bones

Question 2

cardiac muscle

Answer 2

involuntary

heart

Question 3

smooth muscle

Answer 3

involuntary

hollow organs

Question 4

muscle excitability

Answer 4

ability to respond to a stimulus

Question 5

elasticity

Answer 5

ability to stretch a muscle to reach its full range of movement without restriction

Question 6

extensibility

Answer 6

ability of a muscle to extend to a predetermined endpoint

Question 7

contractility

Answer 7

The condition of being able to contract or shrink

Question 8

fascicle

Answer 8

bundle of skeletal muscle fibers surrounded by perimysium

Question 9

epimysium

Answer 9

external connective-tissue sheath of a muscle

Question 10

perimysium

Answer 10

connective tissue surrounding muscle bundles

Question 11

endomysium

Answer 11

delicate connective tissue surrounding the individual muscular fibers within the smallest bundles

Question 12

sarcoplasm

Answer 12

critical role in muscle contraction

cytoplasm of a muscle fibre

Question 13

myofibril

Answer 13

bundles of protein filaments that contain the contractile elements of the cardiomyocyte, that is, the machinery or motor that drives contraction and relaxation

Question 14

sarcolemma

Answer 14

barrier between the extracellular and intracellular compartments

Question 15

actin

Answer 15

important contributor to the contractile property of muscle

Question 16

myosin

Answer 16

converts chemical energy in the form of ATP to mechanical energy
attaches to actin with atp

Question 17

biceps brachii

Answer 17

bicep curl

allows palm to face body when flexing

Question 18

triceps brachii

Answer 18

extends forearm (punch)

Question 19

pronator teres

Answer 19

turns hand palm-down

Question 20

supinator

Answer 20

turns hand palm-up

Question 21

subclavius

Answer 21

depression

stabilizes clavicle by depressing it

Question 22

serratus anterior

Answer 22

moves arms from side to front of body

assists inhalation

Question 23

trapezius

Answer 23

elevates shoulders
pulls shoulder blades together
tilts head backwards

Question 24

rhomboid major

Answer 24

stabilizes scapula during pectoral girdle movement

Question 25

pectoralis major

Answer 25

brings elbows together

moves elbows up (uppercut punch)

Question 26

latissimus dorsi

Answer 26

spreads elbows apart

moves elbow back

Question 27

deltoid

Answer 27

lifts arms at the shoulder

Question 28

supraspinatus

Answer 28

rotates elbow outward (tennis swing)

Question 29

teres major

Answer 29

assists rotating elbow outwards