Test #2

Question 1

Types of dynamic actions

Answer 1

Concentric-shortening bicep curl flexion
Eccentric- extension standing flys
Isokinetic- swimming same motion
Plyometric -box jumps sudden flexion and extension movement

Question 2

Types of muscles

Answer 2

Skeletal - striated voluntary
Cardiac -striated, involuntary, heart
Smooth - non striated, involuntary, stomach

Question 3

Fast and slow twitch

Answer 3

Fast (2) white, more anaerobic, larger, fatigue faster (short bursts)
Slow (1) red, long distance, fatigue resistance, aerobic smaller

Question 4

Steps of sliding filament theory

Answer 4

Message sent to brain to..
CNS
PNS
Neuromuscular junction 
ACH is released 
Action potential 
Calcium ions released 
Calcium bonds to troponin on actin
Boding sites exposed 
Cross bridges from myosin bind to new sites (actin) power stroke
ATP breakdown to ADP

Question 5

Signs of an injury

Answer 5

SHARP
Swelling
Heat
Altered function
Red
Painful

Question 6

Treatment of injury

Answer 6

PIER
Pressure 
I️ce
Elevation 
Rest

Question 7

Advantages and Dis of phosphagen

Distance and fuel source

Answer 7

+large amount of energy in short period of time with fast recovery
-limited amount of ATP produced

ATP/CP
100m 8-10secs

Question 8

Adv. and dis of glycolytic

Distance and fuel

Answer 8

+not limited by oxygen delivery
-Buildup of lactic acid contributed to fatigue
1-2 mins
Glucose

Question 9

Adv. and dis. Of oxidative

Distance and fuel

Answer 9

+High ATP yield able to remove lactic acid
-requires oxygen and is slower to meet energy demands

Glucose amino acids and fatty acids
Unlimited time

Question 10

Function of rectus femoris

Answer 10

Extend the leg and stabilize knee

Squats

Question 11

Latissimus dorsi function

Answer 11

Help stand up straight

Dips

Question 12

Function of deltoid

Answer 12

To move the shoulder abductor

Dips

Question 13

Why is actin good

Answer 13

Thin filament necessary for muscular contraction

Question 14

Tendons

Answer 14

Muscle to bone

Question 15

Ligaments

Answer 15

Bone to bone

Question 16

Inter muscular vs intramuscular coordination

Answer 16

Inter- synchronizing muscle groups

Intra- coordination of muscle fibres in the same muscle

Question 17

Agonist vs antagonist

Answer 17

They work in opposite directions of each other
Agonist is the prime mover of a motion
Antagonist is the muscle opposite of the contraction