Multiple Choice
Which of the following correctly arranges the steps of the muscle contraction cycle in order from first to last?
104
views
4. Tissues & Histology
Introduction to Muscle Tissue
Multiple Choice
Which type of muscle fiber is characterized by being striated, voluntary, and multinucleated?
A
Skeletal muscle fiber
B
Cardiac muscle fiber
C
Smooth muscle fiber
Verified step by step guidance1
Step 1: Begin by understanding the characteristics of the three types of muscle fibers: skeletal, cardiac, and smooth. Each type has distinct structural and functional features.
Step 2: Recall that skeletal muscle fibers are striated, meaning they have a striped appearance under a microscope due to the arrangement of actin and myosin filaments. They are also voluntary, meaning their contraction is consciously controlled, and multinucleated, meaning each fiber contains multiple nuclei.
Step 3: Compare skeletal muscle fibers to cardiac muscle fibers. Cardiac muscle fibers are also striated but are involuntary (controlled by the autonomic nervous system) and typically have a single nucleus per cell.
Step 4: Contrast skeletal muscle fibers with smooth muscle fibers. Smooth muscle fibers are non-striated, involuntary, and typically have a single nucleus per cell. They are found in the walls of hollow organs like the intestines and blood vessels.
Step 5: Based on the characteristics provided in the question (striated, voluntary, and multinucleated), identify that the correct type of muscle fiber is skeletal muscle fiber.
Related Videos
Related Practice
