Recent Lessons

Show all results for ""

10 Questions

0 Views

Skeletal Muscle Calcium Ion Flux

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 main function of skeletal muscle in relation to the skeleton?

To move bones of the skeleton at joints (correct)
To regulate body temperature
To produce blood cells
To provide structural support to the skeleton

What is the functional unit of the skeletal muscle?

Sarcomere (correct)
Myoneural junction
Myofibril
Muscle fiber

What is the role of troponin in muscle contraction?

To bind to actin and prevent contraction
To break down ATP and release energy
To bind to myosin and cause contraction
To bind to calcium and expose actin binding site for myosin (correct)

What is the outcome of thin filaments sliding along thick filaments during muscle contraction?

The I bands disappear and the A bands remain constant (B) Signup and view all the answers

What is the role of myosin in muscle contraction?

To have ATPase activity and move along the thin filaments (C) Signup and view all the answers

What is the site of binding for myosin on the thin filaments?

Actin (B) Signup and view all the answers

What is the role of calcium in muscle contraction?

To bind to troponin-C and expose actin binding site for myosin (A) Signup and view all the answers

What is the structural protein of the thin filaments?

Actin (A) Signup and view all the answers

What is the result of the troponin-tropomyosin complex moving during muscle contraction?

The actin binding site for myosin is exposed (B) Signup and view all the answers

What is the composition of troponin?

Three subunits: troponin-T, troponin-I, and troponin-C (C) Signup and view all the answers