Recent Lessons

Show all results for ""

Muscle Types and Functions

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 muscles?

To synthesize proteins
To convert chemical energy into mechanical energy (correct)
To generate heat energy
To store glycogen

Which type of muscle is involved in the pumping action of blood in circulation?

Skeletal muscle
Cardiac muscle (correct)
Voluntary muscle
Smooth muscle

What is the functional unit of muscle?

Myofibril
Sarcomere (correct)
Muscle fiber
Muscle cell

What is the central region of the A-band in a sarcomere?

H-zone (C) Signup and view all the answers

What is the characteristic feature of smooth muscles?

Nonstriated (B) Signup and view all the answers

What percentage of muscle protein is composed of actin?

25% (B) Signup and view all the answers

Which of the following is NOT a subunit of troponin?

Troponin D (A) Signup and view all the answers

What is the function of Troponin C?

Is a calcium-binding protein (C) Signup and view all the answers

What is the energy source for muscle contraction?

Hydrolysis of ATP (B) Signup and view all the answers

What is the result of the binding of 4 Ca++ ions to troponin C?

Formation of cross-bridges between actin and myosin (A) Signup and view all the answers

Flashcards are hidden until you start studying