The cross bridge cycle starts when ATP binds with the myosin head.

This is what causes the head to detach from actin and attach to another spot on the thin filament where it can bind more ATP and do its job of pulling on actin. The process continues until there are no more ADP or ATP left, at which point a new molecule of ATP is needed for it to start over again.

A- cross bridge cycle starts when ATP binds with the myosin head. B This is what causes the head to detach from actin and attach to another spot on the thin filament where it can bind more ATP and do its job of pulling on actin. C – The process continues until there are no more ADP or ATP left, at which point a new molecule of ATP is needed for it to start over again.

A- cross bridge cycle starts when ATP binds with the myosin head. B This is what causes the head to detach from actin and attach to another spot on the thin filament where it can bind more ATP and do its job of pulling on actin. C – The process continues until there are no more ADP or ATP left, at which point a new molecule of ATP is needed for it to start over again. D- Muscle cells break down fat by using this pathway in order:

E- Fatty acids must first be transported into muscle tissue before they can be broken down during physical activity (exercise). F- Large amounts of fatty acid enter muscle cells through an insulin dependent mechanism mediated by GLUT-

Glucose transporter. G – The fatty acids are broken down into acetyl CoA so that they can be used for energy.

H- Acetyl CoA enters the Krebs Cycle and is further broken down to provide ATP, which muscles need in order to contract (squeeze). I – There is also a larger pathway called Beta oxidation where most of the fat breakdown occurs inside mitochondria. J- This process occurs when there’s an abundance of glycerol from sugar as well as FADH₃ with electrons. K- Inside these structures, it all starts when NAD+ binds with long chain fatty acid molecules during their conversion by lipoprotein lipase enzymes L- Fatty acids created have various chain lengths and are used in a process that is called Beta-Oxidation M- During this pathway, carbohydrates (sugars) enter the mitochondria to be broken down into acetyl CoA.

L – This FADH₃ then cycles back through glycolysis until it finally enters Krebs Cycle or beta oxidation pathways. N – The result of these processes is an increased use of fat for fuel which leads to decreased levels of blood glucose and fatty acids as well as increased muscle mass from higher aerobic activity rates. O – Cross bridge cycle: when muscles contract they require ATP so the cross bridge cycle starts with myosin binding actin during phosphorylation by ATP P- Myosins bind to the actin to stop them from binding with ATP.

The cross bridge cycle starts when myosin binds the actin and releases its phosphate group, that is used as a high energy source for muscle contraction Q- In order for this process to occur, calcium ions are released which bind with tropomyosins in order to allow the release of more mysins from their inactive form and start the phosphorylation of ADP by ATP which leads to an increase in energey production through oxidative phosphorylation and glycolysis.

R – This results in increased levels of aerobic activity within muscles cells because they require less O₂ input but still produce much higher amounts than other cells. S – Once all available ADP has been phosphorylated, the myosin head detaches from actin and slides back to its inactive form.

T – As ATP levels return to normal, calcium ions are also reabsorbed into the sarcoplasmic reticular system.

The cross bridge cycle starts when __ binds the actin and releases its phosphate group, that is used as a high energy source for muscle contraction Q- In order for this process to occur, __ions are released which bind with tropomyosins in order to allow the release of more mysins from their inactive form and start the phosphorylation of ADP by ATP which leads to an increase in energey production through oxidative phosphorylation and glycolysis.

Once all available ADP has been phosphorylated, the myosin head detaches from actin and slides back to its inactive form. T – As ATP levels return to normal, calcium ions are also reabsorbed into the sarcoplasmic reticular system. S – This process is repeated until the cross bridge cycle occurs again when a new set of tropomyosins binds with ATP which start releaseing more mysins in order for __ to occur once again __.

The cross bridge cycle starts when __ binds the actin and releases its phosphate group, that is used as a high energy source for muscle contraction Q- In order for this process to occur, __ions are released which then bind with the tropomyosin, lowering their affinity to ATP __. The ACT is then bound by an mysins which pulls it along and allows for muscle contraction.

Once all available ADP has been phosphorylated, the myosin head detaches from actin and slides back to its inactive form T – As ATP levels return to normal, calcium ions are also reabsorbed into the sarcoplasmic reticular system S – This process is repeated until the cross bridge cycle occurs again when a new set of tropomyosins binds with ATP which start releaseing more mysins in order for __to occur once again __._

The cross bridge cycle starts when __binds the actin to tropomyosin, which causes the mysins to detach from ATP and bind with actin.

Once all available ADP has been phosphorylated, the myosin head detaches from actin and slides back to its inactive form T – As ATP levels return to normal, calcium ions are also reabsorbed into the sarcoplasmic reticular system S – This process is repeated until the cross bridge cycle occurs again when a new set of tropomyosins binds with ATP which start releaseing more mysins in order for __to occur once again__._

The Cross Bridge Cycle Starts When The Actin Binds To Tropomyosin Which Causes Mysis To Detach From Adp And Bind With Actin

Once All Available Adp Has Been Phosphorylated, The Myosin Head Detaches From Actin And Slides Back To Its Inactive Form T As ATP Levels Return To Normal Calcium Ions Are Also Reabsorbed Into The Sarcoplasmic Reticular System S This Process Is Repeated Until The Cross Bridge Cycle Occur Again When A New Set Of Tropomyosins Binds With Atp Which Start Releaseing More Mysins In Order For __ To Occur Once Again.__._

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