Which of the following is a syncitium?
1. Muscle
2. Muscle fibre
3. Myofilaments
4. Myofibrils

Sarcoplasmic reticulum, sarcolemma, sarcoplasmic are the features of
1. Muscle fibre
2. Myofibrils
3. Myofilaments
4. Muscle

I in light band of muscle fibril stands for
1. Isotropic
2. Isolated
3. Innervated
4. Inosonic

A in dark band of muscle fibril stands for
1. Anisotropic
2. Animated
3. Ancient
4. Annulated

Which of the following is not a correct match?
1. Light band - I band
2. Dark band- H band
3. Light band- Actin
4. Dark band- Myosin

Actin and Myosin in muscle fibril are arranged
1. Parallel to each other and perpendicular to the longitudinal axis of the myofibrils
2. Perpendicular to each other and parallel to the longitudinal axis of the myofibrils
3. Parallel to each other and parallel to the longitudinal axis of the myofibrils
4. Perpendicular to each other perpendicular to the longitudinal axis of the myofibrils

Which of the following is not attributed with Actin filament?
1. Thin filament
2. Light bands
3. Isotropic bands
4. None of these

Which of the following is not true regarding Z line?
1. Made up of elastic fibres
2. Present in centre of each I band
3. It bisects the I band
4. Thin Filaments are superficially touching to Z line

Which of the following is not true regarding M line?
1. Thin membrane
2. Fibrous
3. Holds thick filament of A band
4. Keeps the Actin filament in centre

Sarcomere is
1. Functional unit of contraction
2. Portion between two successive Z lines
3. A part of myofibrils
4. All of these