Quiz 7 Myology Flashcards
Choose the specific type of voluntary muscle that forms the powerfully contracting muscles of the musculoskeletal system
Striated skeletal muscle
The three functions of muscle, as discussed in the text, include movement, support and maintain posture, and heat production
True
Identify the structure that connects muscle to bone
Tendon
At the point where muscle attaches to bone, the less mobile attachment during muscle contraction is the …
origin
The connective tissue layer that surrounds an individual muscle cell is the …
Endomysium
As the tendon of a muscle contacts bone, some of its collagen fibers will become part of the …
Periosteum
In the myofibril, identify the thick filament that acts as a molecular motor, changing its shape to attach to its neighboring fiber
Myosin
The sarcomere is the basic functional unit of the contractile system of skeletal muscle and is defined by the region between two z lines or z membranes
True
The neuromuscular junction is made up of muscle cells and …
Motor neuron
What is responsible for exposing the binding sites on the think filament, initiating muscle contraction
Calcium
In the relaxed or resting state, the role of the troponin-tropomyosin complex is to block the receptor sites on the actin molecule
True
The energy source for muscle contraction is
ATP
