muscle fibres, arrangement & actions

Question 1

fusiform muscles

Answer 1

long fibres, run on the length of muscle belly
good for speed, not for power
biceps brachii

Question 2

unipennate muscles

Answer 2

fibres run on one side of tendon
wrist extensors

Question 3

multipennate muscles

Answer 3

fibres branch from many tendons
deltoid

Question 4

bipennate muscles

Answer 4

fibres branch from both sides of tendon
rectus femoris

Question 4

radiate muscles

Answer 4

muscles splay out from central tendon
pectoralis major

Question 5

type 1 muscle fibre

Answer 5

slow-twitch oxidative
good for long distance, endurance sports
resistant to fatigue
red

Question 6

type 2a muscle fibres

Answer 6

fast twitch oxidative
for mid-length activities
pink

Question 7

myoglobin

Answer 7

protein that helps bring oxygen to muscle
red in color

Question 7

type 2b muscle fibres

Answer 7

fast twitch glycolyctic
for short-duration, explosive activities
fatigue easily
white

Question 8

dynamic concentric muscle contraction

Answer 8

muscle produces force while shortening
up motion in bicep curl

Question 9

dynamic eccentric muscle contraction

Answer 9

muscle producing force while shortening
down motion in bicep curl

Question 10

dynamic isoinertial muscle contraction

Answer 10

when muscle resistance remains constant
lat pull downs

Question 11

dynamic isokinetic muscle contractoin

Answer 11

constant angular velocity
same amount of force applied as force used

Question 12

static isometric muscle contraction

Answer 12

muscle produces force without lengthening or shortening
plank

Question 13

agonist (prime mover)

Answer 13

muscle contracting and doing the work

Question 14

antagonist

Answer 14

muscle relaxing, allowing movement to occur

Question 15

synergist (assisstant)

Answer 15

assists muscle in producing force but isnt the main muscle working

Question 16

stabiliser (fixator)

Answer 16

maintain posture of body, keep stable

Question 17

define reciprocal inhibition

Answer 17

Muscle working in pairs to produce movement, when one muscle is contracting, the opposite muscle in the pair is relaxing.