Multiple Choice
What structures make up the A bands in striated muscle?
81
views
9. Muscle Tissue
Structure of a Skeletal Muscle
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Thick filaments in the sarcomere are primarily made of which protein?
A
Tropomyosin
B
Myosin
C
Troponin
D
Actin
Verified step by step guidance1
Understand the structure of a sarcomere: A sarcomere is the basic contractile unit of muscle fiber, composed of thick and thin filaments.
Identify the proteins involved: The thick filaments are primarily composed of the protein myosin, while the thin filaments are primarily composed of actin, along with tropomyosin and troponin.
Differentiate between thick and thin filaments: Thick filaments are made of myosin, which is responsible for muscle contraction through its interaction with actin in the thin filaments.
Recognize the role of myosin: Myosin molecules have heads that bind to actin, forming cross-bridges that generate force during muscle contraction.
Conclude that the primary protein in thick filaments is myosin, as it plays a crucial role in the contractile process of muscles.
7:12mWatch next
Master Organization of Muscle Tissue with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Structure of a Skeletal Muscle practice set
Problem sets built by lead tutorsExpert video explanations