Muscle Physiology Quiz

<p>Reduction in the size and power of a muscle (B)</p> Signup and view all the answers

<p>Limits exercise due to lactic acid buildup (C)</p> Signup and view all the answers

<p>By causing shivering which generates heat (D)</p> Signup and view all the answers

<p>They assist in the movement of oxygen into the bloodstream (B)</p> Signup and view all the answers

<p>Muscles help return venous blood to the heart (C)</p> Signup and view all the answers

<p>To assist in the movement of food through peristalsis (C)</p> Signup and view all the answers

<p>By aiding in the regulation of bladder sphincters (B)</p> Signup and view all the answers

<p>It is the time from nerve stimulation to contraction. (B)</p> Signup and view all the answers

<p>It varies based on the number of muscle fibers contracting. (D)</p> Signup and view all the answers

<p>Muscle twitches add together to produce a stronger contraction. (B)</p> Signup and view all the answers

<p>A state of constant contraction with fused twitches. (C)</p> Signup and view all the answers

<p>Slow-twitch fibers (Type I) due to their resistance to fatigue. (D)</p> Signup and view all the answers

<p>Aerobic metabolism for prolonged ATP production. (A)</p> Signup and view all the answers

<p>The amount of myoglobin present. (B)</p> Signup and view all the answers

<p>Stops contractions despite stimulation. (C)</p> Signup and view all the answers

<p>They cannot be replaced and it leads to permanent loss of function. (B)</p> Signup and view all the answers

<p>Dystrophy (A)</p> Signup and view all the answers

<p>Toxin that inhibits the release of acetylcholine (D)</p> Signup and view all the answers

<p>Low blood glucose (D)</p> Signup and view all the answers

<p>It causes chronic muscular pain and tenderness. (D)</p> Signup and view all the answers

<p>High fever and heart irregularities from potassium release. (D)</p> Signup and view all the answers

<p>From several hours to a day post-exercise. (D)</p> Signup and view all the answers

<p>Muscles allow movement to respond to environmental changes. (B)</p> Signup and view all the answers

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A single, brief contraction of a muscle fiber triggered by a nerve impulse.

The time between the nerve impulse and the start of muscle contraction.

The period when the muscle fiber is actively shortening.

The time when the muscle fiber is returning to its resting length.

A state where individual muscle twitches are fused together, resulting in a sustained, powerful contraction.

Muscle fibers that contract slowly and resist fatigue, often found in dark meat.

Muscle fibers that contract quickly and fatigue easily, often found in white meat.

A pigment that binds oxygen in muscle fibers, giving slow-twitch fibers their darker color.

Muscle fibers that contract quickly and fatigue easily, used for short bursts of intense activity.

Muscle fibers that contract slowly and resist fatigue, used for endurance activities.

The process by which muscles increase in size and strength due to an increase in the size and number of myofibrils.

Decrease in the size, tone, and power of a muscle due to lack of use.

A medical condition where skeletal muscles weaken and degenerate, replaced by fatty and fibrous tissue, hindering blood flow.

A potentially fatal paralysis caused by a toxin produced by "Clostridium Botulinum," preventing the release of acetylcholine, a muscle stimulant.

Painful muscle spasms triggered by intense exercise, cold, dehydration, electrolyte imbalance, low glucose, or reduced blood flow.

Chronic muscle pain and tenderness, often with fatigue and sleep disruptions, possibly caused by infections, trauma, or medications.

A shock-like state after muscle crushing, causing high fever, heart issues, and kidney failure from myoglobin release.

Pain, stiffness, and tenderness felt hours after strenuous exercise, caused by microtrauma to muscles.

Muscle inflammation and weakness caused by infection or autoimmune disorders.

A condition where muscles shorten abnormally, not caused by nerve stimulation, potentially due to calcium build-up.

The muscular system works with the circulatory system to transport blood throughout the body. Skeletal muscle contractions help pump blood back to the heart, while smooth muscle contractions help move blood through arteries. Smooth muscle can also regulate blood vessel diameter to help control body temperature.

The muscular system works with the respiratory system to facilitate breathing. Intercostal muscles and the diaphragm contract and relax to allow air into and out of the lungs, delivering oxygen and removing carbon dioxide.

The muscular system works with the digestive system to break down and move food through the body. Skeletal muscles in the jaw and tongue help grind food. Smooth muscle contractions (peristalsis) move food through the digestive tract, allowing nutrients to be absorbed.

The muscular system works with the excretory system to regulate waste removal from the body. Smooth muscle contractions in the bladder sphincter help control the release of urine.

The muscular system helps maintain homeostasis by regulating temperature, transporting oxygen and nutrients, and removing waste products. This ensures the body stays in a stable internal environment.