Test #2 Flashcards
Types of dynamic actions
Concentric-shortening bicep curl flexion
Eccentric- extension standing flys
Isokinetic- swimming same motion
Plyometric -box jumps sudden flexion and extension movement
Types of muscles
Skeletal - striated voluntary
Cardiac -striated, involuntary, heart
Smooth - non striated, involuntary, stomach
Fast and slow twitch
Fast (2) white, more anaerobic, larger, fatigue faster (short bursts)
Slow (1) red, long distance, fatigue resistance, aerobic smaller
Steps of sliding filament theory
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
Signs of an injury
SHARP Swelling Heat Altered function Red Painful
Treatment of injury
PIER Pressure I️ce Elevation Rest
Advantages and Dis of phosphagen
Distance and fuel source
+large amount of energy in short period of time with fast recovery
-limited amount of ATP produced
ATP/CP
100m 8-10secs
Adv. and dis of glycolytic
Distance and fuel
+not limited by oxygen delivery
-Buildup of lactic acid contributed to fatigue
1-2 mins
Glucose
Adv. and dis. Of oxidative
Distance and fuel
+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
Function of rectus femoris
Extend the leg and stabilize knee
Squats
Latissimus dorsi function
Help stand up straight
Dips
Function of deltoid
To move the shoulder abductor
Dips
Why is actin good
Thin filament necessary for muscular contraction
Tendons
Muscle to bone
Ligaments
Bone to bone
