Malignant Hyperthermia and Muscle Contraction

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary characteristic of Malignant Hyperthermia?

  • Excessive skeletal muscle contraction leading to hyperthermia. (correct)
  • Decreased muscle contraction causing hypothermia.
  • Reduced carbon dioxide production and bradycardia.
  • Normal muscle contraction with a slight increase in body temperature.

What are the two primary triggers for Malignant Hyperthermia?

  • Opioids and muscle relaxants
  • Local anesthetics and sedatives
  • General anesthetic gases and succinylcholine (correct)
  • Antibiotics and anti-inflammatory drugs.

Which ion is primarily responsible for initiating skeletal muscle contraction?

  • Chloride (Cl-)
  • Sodium (Na+) (correct)
  • Calcium (Ca++)
  • Potassium (K+)

Which ion plays a major role in muscle squeeze or actual contraction?

<p>Calcium (Ca++) (C)</p> Signup and view all the answers

What substance is described as consuming ions for energy?

<p>Adenosine Triphosphate (ATP) (C)</p> Signup and view all the answers

Where is calcium typically stored in muscle cells?

<p>In the sarcoplasmic reticulum (SR) (B)</p> Signup and view all the answers

What is the best description of the structure of the sarcoplasmic reticulum (SR)?

<p>Thread-like tubular networks that surround muscle cells (C)</p> Signup and view all the answers

In the analogy provided, what does eating a biscuit and having to run 2 miles represent?

<p>The action of ATP using ions for energy. (A)</p> Signup and view all the answers

Flashcards

Malignant Hyperthermia

A life-threatening condition where skeletal muscles contract uncontrollably, generating excessive heat, CO2, and rapid heartbeat.

Sodium (Na+)

The neurotransmitter involved in muscle contraction; triggers a chain reaction by initiating the release of calcium.

Calcium (Ca++)

The primary ion responsible for muscle contraction; binds to proteins to help muscles contract.

Adenosine Triphosphate (ATP)

The energy source for muscle contraction; used to power the movement of ions within the muscle cell.

Signup and view all the flashcards

Sarcoplasmic Reticulum (SR)

The intracellular network of tubules responsible for storing and releasing calcium within muscle cells.

Signup and view all the flashcards

Cytoplasm

The jelly-like part of the cell where important components float; not where calcium is stored.

Signup and view all the flashcards

Normal Skeletal Muscle Contraction

The state of muscle contraction in response to nerve impulses.

Signup and view all the flashcards

Gases and Succinylcholine

A group of drugs that can trigger malignant hyperthermia in susceptible individuals.

Signup and view all the flashcards

Study Notes

Malignant Hyperthermia

  • Malignant hyperthermia is a life-threatening reaction to certain anesthetic agents (gases and succinylcholine).
  • Excessive muscle contractions, heat production, and elevated CO2 and heart rate occur.

Skeletal Muscle Contraction

  • Calcium (Ca++) is crucial for muscle contraction.
  • It is stored in the sarcoplasmic reticulum (SR).
  • Sodium (Na+) initiates the process, leading to the release of Ca++.
  • Adenosine Triphosphate (ATP) provides energy for the process.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Malignant Hyperthermia Slides PDF

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser