Flashcards: chapter 5 exercise physiology

_____-_______ _________ ________ __________ _______

_________________________

______________________

Oxidative enzymes

___ ___________ __________ and motor unit strength

_________ __________ ________ and myosin ATPase

Small ________ ________ ________

_____sarcoplasmic reticulum development

Slow-twitch Type 1 slow oxidative fibers

high aerobic capacity

high fatigue resistance

oxidative enzymes

Low anaerobic capacity

slow contractile speed

motor neuron size

low

_____-_______ ________ ____ _____ ___________ ________

__________ _________ _________

____________ __________ __________

____________ ___ __________ ________

________ __________ ____________ and motor unit strength

_____ _______________ _______ and myosin ATPase

______ sarcoplasmic reticulum development

Fast-twitch Type IIa fast oxidative glycolytic fibers

moderate aerobic capacity

moderate fatigue resistance

glycolytic and oxidative enzymes

high anaerobic capacity

fast contractile speed

high

_____-_____ _______ ___ ___ __________ ______

_________ __________ _________

____ ______ __________

__________ ___________

________ ___________ _________ and motor unit strength

________ _________ __________ and myosin ATPase

____ sarcoplasmic reticulum development

fast-twitch type 2x fast glycolytic fibers

lowest aerobic capacity

low fatigue resistance

glycolytic enzymes

highest anaerobic capacity

fast contractile speed

high

<p>force is developed while the muscle is shortening </p>

force is developed while the muscle is shortening

<p>force is generated but the length of the muscle is unchanged </p>

force is generated but the length of the muscle is unchanged

<p>force is generated while the muscle is lengthening </p>

force is generated while the muscle is lengthening

<p>bone</p><p>tendon</p><p>muscle</p><p>epimysium</p><p>endomysium </p><p>perimysium </p><p>fasciculus</p><p>muscle fiber</p><p>myofibril </p>

bone

tendon

muscle

epimysium

endomysium

perimysium

fasciculus

muscle fiber

myofibril

<p>sarcolemma</p><p>transverse tubules </p><p>sarcoplasmic reticulum </p><p>myofibril</p><p>sarcoplasm </p>

sarcolemma

transverse tubules

sarcoplasmic reticulum

myofibril

sarcoplasm

<p>sarcomeres </p>

sarcomeres

<p>one alpha motor neuron innervates many muscle fibers </p>

one alpha motor neuron innervates many muscle fibers

<p>the pulling of the actin filament past the myosin results in muscle shortening and the generation of muscle force </p>

the pulling of the actin filament past the myosin results in muscle shortening and the generation of muscle force

<p>myosin head</p><p>ATPase</p><p>powerstroke</p>

myosin head

ATPase

powerstroke

<p>calcium must be pumped back into the SR</p>

calcium must be pumped back into the SR

<p>type 1 -> type IIa -> type IIx</p>

type 1 -> type IIa -> type IIx

<p>motor units activated</p><p>type of motor units</p><p>muscle size</p>

motor units activated

type of motor units

muscle size

<p>muscle twitch</p><p>summation</p><p>tetanus </p>

muscle twitch

summation

tetanus