Podcast
Questions and Answers
Which muscle tissue is characterized by being striated and voluntary?
Which muscle tissue is characterized by being striated and voluntary?
- Smooth muscle
- Visceral muscle
- Cardiac muscle
- Skeletal muscle (correct)
Which structure is NOT found in smooth muscle?
Which structure is NOT found in smooth muscle?
- Myosin filaments
- Dense bodies
- Actin filaments
- Sarcomeres (correct)
What is the role of intercalated discs in cardiac muscle?
What is the role of intercalated discs in cardiac muscle?
- To provide a smooth muscle attachment
- To enable voluntary control
- To store calcium ions
- To facilitate synchronized contraction (correct)
What initiates the contraction of muscle tissue?
What initiates the contraction of muscle tissue?
Which component is common to all three types of muscle tissue?
Which component is common to all three types of muscle tissue?
Flashcards
Types of muscle tissue
Types of muscle tissue
Muscle tissue includes skeletal, smooth, and cardiac types.
Skeletal muscle
Skeletal muscle
Striated and voluntary muscle attached to bones.
Smooth muscle
Smooth muscle
Involuntary and non-striated muscle found in organs and blood vessels.
Cardiac muscle
Cardiac muscle
Signup and view all the flashcards
Myofilaments
Myofilaments
Signup and view all the flashcards
Study Notes
Muscle Tissue Types
- Muscle tissue comes in three main forms: skeletal, smooth, and cardiac.
- Skeletal muscle is striated and voluntary, linked to bones.
- Smooth muscle is involuntary and non-striated, found in organs and blood vessels.
- Cardiac muscle is striated and involuntary, exclusively in the heart.
Muscle Contraction Mechanisms
- All muscle types contract via myofilaments sliding past each other.
- Skeletal muscle fibers have sarcomeres—structures with actin and myosin filaments overlapping.
- Smooth muscle lacks sarcomeres, but contains dense bodies.
- Cardiac muscle has intercalated discs, enabling coordinated contractions.
Calcium's Role in Contraction
- Calcium release from the sarcoplasmic reticulum initiates contraction.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
