Structure of Muscle
The smallest functional unit of a muscle
What is Sarcomere?
Muscle type that is under voluntary control
What is Skeletal Muscle?
Ion that stimulates muscle contraction
What is Calcium?
Smallest filament in the sarcomere
A group of sarcomeres makes this
What is a Myofibril?
Type of muscle found in the walls of blood vessels
What is smooth muscle?
Neurotransmitter that stimulates muscle contraction
What is Acetylcholine?
Which band contains only Actin, no myosin
A group of muscle fibers makes this
What is muscle fascicle (primary)?
This type of muscle contains gap junctions
What is Cardiac muscle?
Part of muscle that propagates action potentials to the deep muscle (sarcoplasmic reticulum)
What is T-Tubules?
Band that does not change size during muscle contraction
What is A band?
Name of the protein that anchors the actin cytoskeleton to the extracellular matrix
What is Dystrophin?
Name of the equivalent "z-disk" in smooth muscle
What is a dense body?
What is Nicotinic acetylcholine receptor?
Directly binds calcium to initiate muscle contraction
What is troponin (C)?
Large protein that anchors myosin to the Z-line
What is Titin?
Enzyme that phosphorylates myosin, causing smooth muscle contraction
What is Myosin Light Chain Kinase (MLCK)?
Receptor that stimulates Ca2+ release from the sarcoplasmic reticulum
What is Ryanodine Receptor?
Covers actin active site, preventing myosin binding
What is Tropomyosin?