musclural system

Question 1

Skeletal Muscle

Answer 1

and

Question 2

Cardiac Muscle

Answer 2

and

Question 3

Smooth Muscle

Answer 3

and

Question 4

Exicability

Answer 4

Able to send electrical waves (action potential) along the entire length

Question 5

Elasticity

Answer 5

Having the ability to recoil back to its original length

Question 6

Extensibility

Answer 6

Allows muscles to stretch or extend

Question 7

Contractility

Answer 7

Allows muscles to pull on its attachment and shorten

Question 8

Fascicle

Answer 8

The muscle fibers that are arranged in bundles

Question 9

Epimysium

Answer 9

Outermost layer, surrounds entire muscle

Question 10

Perimysium

Answer 10

Separates and surrounds fascicles

Question 11

Endomysium

Answer 11

Surrounds each individual muscle fiber

Question 12

Sarcolemma

Answer 12

Muscle fiber membrane

Question 13

Myofibril

Answer 13

Individual parallel muscle fibers (made up of actin and myosin)

Question 14

Sarcoplasm

Answer 14

Inner material surrounding the myofibril (equivalent to the cell’s cytoplasm)

Question 15

Actin

Answer 15

Thin filaments

Question 16

Myosin

Answer 16

Thick filaments

Question 17

biceps brachii

Answer 17

performs a bicep curl, also allows palm of hand to point toward body while flexing

Question 18

triceps brachii

Answer 18

extends forearm, as during a 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

stabilizes clavicle during movement by depressing it

Question 22

serratus anterior

Answer 22

moves arm from side of body to front of body; assists with inhalation

Question 23

trapezius

Answer 23

elevates shoulders (shrugging);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 elbow up (as during uppercut punch)

Question 26

latissimus dorsi

Answer 26

Moves elbow back (as in elbowing someone standing behind you); spreads elbows apart

Question 27

deltoid

Answer 27

lifts arms at the shoulder

Question 28

supraspinatus

Answer 28

rotate the elbow outwards, as during a tennis swing

Question 29

teres major

Answer 29

assists the infraspinatus